Subject: Re: [Healeys] Healeys Digest, Vol 17, Issue 98

From: Craig Cooper <[email-masked]>
Date: Wed, 19 Jun 2024 13:54:43 -0700

--===============9193972896691258688==

--000000000000475183061b446961
Content-Transfer-Encoding: quoted-printable

Re:  Lightened Flywheels

Hi Bob:  I absolutely love the extra power (perceived or actual) in my
Healeys with light flywheels.  My BN1 has one from DW that weighs about 12
pounds and I'm using DW's damper on the front.  The car has an upgraded
crankshaft and BN7 gearbox, so maybe that's kept it from flying apart.  My
BN7 w/BJ8 cam has an alloy flywheel I got on eBay that I think weighs about
20 pounds.  It runs smooth as silk with no ill effects.  I still can get
occasional run-on though, with lower octane fuel.

On the gearbox oil leaks, check the lower bell housing bolts which, at
least on the side shifts, extend into the gearbox and can leak.  Also,
"Quad Ring" OD operating shaft seals are available from AH Spares, part
0VD185MS.  I haven't tried them yet, but it seems like they would be an
improvement over the single O rings generally used.
OVD185MS

On Wed, Jun 19, 2024 at 10:59=E2=80=AFAM <[email-masked]> w=
rote:

> Send Healeys mailing list submissions to
>         [email-masked]
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         http://autox.team.net/mailman/listinfo/healeys
> or, via email, send a message with subject or body 'help' to
>         [email-masked]
>
> You can reach the person managing the list at
>         [email-masked]
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Healeys digest..."
> Today's Topics:
>
>    1. Re: Lightened Flywheels (Hank Leach)
>    2. Re: Lightened Flywheels (Bob Spidell)
>    3. Re: Lightened Flywheels (Hank Leach)
>    4. Re: Lightened Flywheels (Michael Salter)
>    5. Re: *** SPAM *** Re:  Lightened Flywheels (Reinhart Rosner)
>    6. Re: Lightened Flywheels (Harold Manifold)
>
>
>
> ---------- Forwarded message ----------
> From: Hank Leach <[email-masked]>
> To: Bob Spidell <[email-masked]>, Healeys <[email-masked]>
> Cc:
> Bcc:
> Date: Tue, 18 Jun 2024 18:10:50 +0000
> Subject: Re: [Healeys] Lightened Flywheels
> The best way to stop run on is foot on brake, car in gear-It's not hurtin=
g
> anything and is recommended by the likes of Geoff Healey and others.
> Denotation has a worse effect on the engine.
> The downside of the lightened flywheel is a heavier clutch engagement.
> That said the heaviest part I ever picked up is a 100 flywheel.  Egad, wh=
at
> a hunk of metal!
> -However the issues with the flywheel/cracked crankshaft can be traced to
> a lack of a front pulley dampener and that might be the better solution t=
o
> the issue.  It may in fact make dumping the clutch easier on the
> drivetrain, but not proven. Since your problem is with the front of the
> engine, I would address the seal replacement -felt if you are a purest -o=
r
> yes, the modern solution fancy cover to stop drips on the floor. I collec=
t
> my Healey oil in a small swimming pool I constructed to hold leaks, while
> in storage. Then some kerosene quickly cleans up the mess when the car is
> moved. Since they no longer oil the roadways, think of the benifit you ar=
e
> supplying to the asphalt in longer life. Hank-------------------
>
> From: "Bob Spidell" <[email-masked]>
> To: "Healeys" <[email-masked]>
> Sent: June 18, 2024 at 10:03 AM PDT
> Subject: [Healeys] Lightened Flywheels
> Listers,
> I know this one has been discussed--well, beat to death--but it looks lik=
e
> I'll have to pull my BJ8's gearbox/OD to replace a leaky front seal, so I=
'm
> thinking of installing a lightened flywheel while I'm at it. My main reas=
on
> for considering it is to stop some pretty significant run-on ('dieseling,=
'
> which I get on my BN2 as well). I'm not totally comfortable with dropping
> the clutch in gear to stop it, and any performance improvements would be =
a
> plus. It just so happens I just caught an episode of 'Engine Masters' on
> MotorTrend TV, where they seriously reduced the rotating mass of an
> engine--an SBC, which is what they mostly do--and got some interesting
> results: more HP and torque, as measured on a topnotch dyno. The gains we=
re
> shown primarily on acceleration which, intuitively I suppose, were greate=
r
> when RPM was raised at 300RPM/minute vs. 600. Any constant speed increase=
s
> weren't addressed as far as I could tell. The late, great Gary Andersen,
> who raced, said the main benefit was faster spin-up for rev-matching
> downshifts; anyone noted any other significant benefits? The 'Dyno Master=
'
> on EM said he'd seen timing chain failures with lightened flywheels; my
> main concern for both my Healeys has been reliability, with minimal
> maintenance required, but if it stops/minimizes the run-on I'd be happy.
> Anyone know how far you can go lightening without adverse effects? TIA, B=
ob
> _______________________________________________ Support Team.Net
> http://www.team.net/donate.html Suggested annual donation $12.75 Archive:
> http://www.team.net/pipermail/healeys
> http://autox.team.net/archive/healeys [email-masked]
> http://autox.team.net/mailman/listinfo/healeys Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>
>
> ---------- Forwarded message ----------
> From: Bob Spidell <[email-masked]>
> To: [email-masked], Healeys <[email-masked]>
> Cc:
> Bcc:
> Date: Tue, 18 Jun 2024 11:45:36 -0700
> Subject: Re: [Healeys] Lightened Flywheels
> Thanks, Hank. To clarify, the seal I need to replace is at the front of
> the gearbox; i.e. the input shaft seal on my BJ8 gearbox. I'm pretty
> sure that's the source of the leak--disappointing, since the rebuild
> only a few years ago--because it smells like the MT-90 I use in my
> gearboxes (I know, syn leaks, but this box probably has 10K miles on it
> before it erupted). I also spent time and effort sealing the O/D drain,
> since I initially assumed it was the source of the leak. Makes me wonder
> if seal quality has suffered, like a lot of things. Pretty sure I
> checked the input shaft for wear.
>
> I'm about (re-convinced) to forgo a lightened flywheel, since it
> apparently causes no harm (just have to remember to do it). I've heard
> it can actually cause an engine to run backwards, which would be all
> kinds of bad.
>
> bs
>
> On 6/18/2024 11:10 AM, Hank Leach wrote:
> > The best way to stop run on is foot on brake, car in gear-It's not
> > hurting anything and is recommended by the likes of Geoff Healey and
> > others. Denotation has a worse effect on the engine.
> > The downside of the lightened flywheel is a heavier clutch engagement.
> > That said the heaviest part I ever picked up is a 100 flywheel.  Egad,
> > what a hunk of metal!
> > -However the issues with the flywheel/cracked crankshaft can be traced
> > to a lack of a front pulley dampener and that might be the better
> > solution to the issue.  It may in fact make dumping the clutch easier
> > on the drivetrain, but not proven. Since your problem is with the
> > front of the engine, I would address the seal replacement -felt if you
> > are a purest -or yes, the modern solution fancy cover to stop drips on
> > the floor. I collect my Healey oil in a small swimming pool I
> > constructed to hold leaks, while in storage. Then some kerosene
> > quickly cleans up the mess when the car is moved. Since they no longer
> > oil the roadways, think of the benifit you are supplying to the
> > asphalt in longer life. Hank-------------------
> >
> > From: "Bob Spidell" <[email-masked]>
> > To: "Healeys" <[email-masked]>
> > Sent: June 18, 2024 at 10:03 AM PDT
> > Subject: [Healeys] Lightened Flywheels
> > Listers,
> > I know this one has been discussed--well, beat to death--but it looks
> > like I'll have to pull my BJ8's gearbox/OD to replace a leaky front
> > seal, so I'm thinking of installing a lightened flywheel while I'm at
> > it. My main reason for considering it is to stop some pretty
> > significant run-on ('dieseling,' which I get on my BN2 as well). I'm
> > not totally comfortable with dropping the clutch in gear to stop it,
> > and any performance improvements would be a plus. It just so happens I
> > just caught an episode of 'Engine Masters' on MotorTrend TV, where
> > they seriously reduced the rotating mass of an engine--an SBC, which
> > is what they mostly do--and got some interesting results: more HP and
> > torque, as measured on a topnotch dyno. The gains were shown primarily
> > on acceleration which, intuitively I suppose, were greater when RPM
> > was raised at 300RPM/minute vs. 600. Any constant speed increases
> > weren't addressed as far as I could tell. The late, great Gary
> > Andersen, who raced, said the main benefit was faster spin-up for
> > rev-matching downshifts; anyone noted any other significant benefits?
> > The 'Dyno Master' on EM said he'd seen timing chain failures with
> > lightened flywheels; my main concern for both my Healeys has been
> > reliability, with minimal maintenance required, but if it
> > stops/minimizes the run-on I'd be happy. Anyone know how far you can
> > go lightening without adverse effects? TIA, Bob
> > _______________________________________________ Support Team.Net
> > http://www.team.net/donate.html Suggested annual donation $12.75
> > Archive: http://www.team.net/pipermail/healeys
> > http://autox.team.net/archive/healeys [email-masked]
> > http://autox.team.net/mailman/listinfo/healeys Unsubscribe/Manage:
> > http://autox.team.net/mailman/options/healeys/[email-masked]
>
>
>
>
>
> ---------- Forwarded message ----------
> From: Hank Leach <[email-masked]>
> To: Bob Spidell <[email-masked]>, Healeys <[email-masked]>
> Cc:
> Bcc:
> Date: Tue, 18 Jun 2024 18:57:12 +0000
> Subject: Re: [Healeys] Lightened Flywheels
> OK BJ8 issue...that is a lighter flywheel.  I still recommend dumping the
> clutch to stop any run-on. Might check your timing with a light and set i=
t
> to 17 degrees to compensate for the lousy fuel we get today. That appears
> to tbe the magic number for most of the old British iron- used to 95+
> octane fuels. When those cars were built there was no corn in the fuel. S=
ad
> that many of our classics are now running on volts and amps.
> An aside-on the old 100 gearbox, with just rifling for a seal, I add an
> o-ring to the input shaft to "contain the spinout. Hank
> --------------------
>
> From: "Bob Spidell" <[email-masked]>
> To: <[email-masked]>, "Healeys" <[email-masked]>
> Sent: June 18, 2024 at 11:46 AM PDT
> Subject: Re: [Healeys] Lightened Flywheels
> Thanks, Hank. To clarify, the seal I need to replace is at the front of
> the gearbox; i.e. the input shaft seal on my BJ8 gearbox. I'm pretty sure
> that's the source of the leak--disappointing, since the rebuild only a fe=
w
> years ago--because it smells like the MT-90 I use in my gearboxes (I know=
,
> syn leaks, but this box probably has 10K miles on it before it erupted). =
I
> also spent time and effort sealing the O/D drain, since I initially assum=
ed
> it was the source of the leak. Makes me wonder if seal quality has
> suffered, like a lot of things. Pretty sure I checked the input shaft for
> wear.
> I'm about (re-convinced) to forgo a lightened flywheel, since it
> apparently causes no harm (just have to remember to do it). I've heard it
> can actually cause an engine to run backwards, which would be all kinds o=
f
> bad. bs On 6/18/2024 11:10 AM, Hank Leach wrote: > The best way to stop r=
un
> on is foot on brake, car in gear-It's not > hurting anything and is
> recommended by the likes of Geoff Healey and > others. Denotation has a
> worse effect on the engine. > The downside of the lightened flywheel is a
> heavier clutch engagement. > That said the heaviest part I ever picked up
> is a 100 flywheel.  Egad, > what a hunk of metal! > -However the issues
> with the flywheel/cracked crankshaft can be traced > to a lack of a front
> pulley dampener and that might be the better > solution to the issue.  It
> may in fact make dumping the clutch easier > on the drivetrain, but not
> proven. Since your problem is with the > front of the engine, I would
> address the seal replacement -felt if you > are a purest -or yes, the
> modern solution fancy cover to stop drips on > the floor. I collect my
> Healey oil in a small swimming pool I > constructed to hold leaks, while =
in
> storage. Then some kerosene > quickly cleans up the mess when the car is
> moved. Since they no longer > oil the roadways, think of the benifit you
> are supplying to the > asphalt in longer life. Hank------------------- > =
>
> From: "Bob Spidell" <[email-masked]> > To: "Healeys" <
> [email-masked]> > Sent: June 18, 2024 at 10:03 AM PDT > Subject:
> [Healeys] Lightened Flywheels > Listers, > I know this one has been
> discussed--well, beat to death--but it looks > like I'll have to pull my
> BJ8's gearbox/OD to replace a leaky front > seal, so I'm thinking of
> installing a lightened flywheel while I'm at > it. My main reason for
> considering it is to stop some pretty > significant run-on ('dieseling,'
> which I get on my BN2 as well). I'm > not totally comfortable with droppi=
ng
> the clutch in gear to stop it, > and any performance improvements would b=
e
> a plus. It just so happens I > just caught an episode of 'Engine Masters'
> on MotorTrend TV, where > they seriously reduced the rotating mass of an
> engine--an SBC, which > is what they mostly do--and got some interesting
> results: more HP and > torque, as measured on a topnotch dyno. The gains
> were shown primarily > on acceleration which, intuitively I suppose, were
> greater when RPM > was raised at 300RPM/minute vs. 600. Any constant spee=
d
> increases > weren't addressed as far as I could tell. The late, great Gar=
y
> > Andersen, who raced, said the main benefit was faster spin-up for >
> rev-matching downshifts; anyone noted any other significant benefits? > T=
he
> 'Dyno Master' on EM said he'd seen timing chain failures with > lightened
> flywheels; my main concern for both my Healeys has been > reliability, wi=
th
> minimal maintenance required, but if it > stops/minimizes the run-on I'd =
be
> happy. Anyone know how far you can > go lightening without adverse effect=
s?
> TIA, Bob > _______________________________________________ Support Team.N=
et
> > http://www.team.net/donate.html Suggested annual donation $12.75 >
> Archive: http://www.team.net/pipermail/healeys >
> http://autox.team.net/archive/healeys [email-masked] >
> http://autox.team.net/mailman/listinfo/healeys Unsubscribe/Manage: >
> http://autox.team.net/mailman/options/healeys/[email-masked]
>
>
>
> ---------- Forwarded message ----------
> From: Michael Salter <[email-masked]>
> To: Hank Leach <[email-masked]>
> Cc: Bob Spidell <[email-masked]>, Healeys <[email-masked]>
> Bcc:
> Date: Tue, 18 Jun 2024 15:20:15 -0400
> Subject: Re: [Healeys] Lightened Flywheels
> When it comes to flywheel weight the 6 cylinder and 4 cylinder have hugel=
y
> different requirements.  The natural balance of the 6 means that there is
> much less change in rotational speed during each revolution and with the
> crankshaft itself being much heavier the gearbox requires much less
> protection.
> The type of driving that I do these days does not require "snappy" gear
> changes so I would tend to leave the flywheel as designed as I really
> appreciate the smoothness of the 6 cylinder engines however, each to his
> own.
> I  would definitely not lighten a 100 flywheel, particularly a BN1, for
> fear of eventually damaging the gearbox for the reasons described in this
> article.
> https://precisionsportscar.com/austin-healey-100-crank-failures/
>
> M
>
> On Tue., Jun. 18, 2024, 2:48 p.m. Hank Leach via Healeys, <
> [email-masked]> wrote:
>
>> The best way to stop run on is foot on brake, car in gear-It's not
>> hurting anything and is recommended by the likes of Geoff Healey and
>> others. Denotation has a worse effect on the engine.
>> The downside of the lightened flywheel is a heavier clutch engagement.
>> That said the heaviest part I ever picked up is a 100 flywheel.  Egad, w=
hat
>> a hunk of metal!
>> -However the issues with the flywheel/cracked crankshaft can be traced t=
o
>> a lack of a front pulley dampener and that might be the better solution =
to
>> the issue.  It may in fact make dumping the clutch easier on the
>> drivetrain, but not proven. Since your problem is with the front of the
>> engine, I would address the seal replacement -felt if you are a purest -=
or
>> yes, the modern solution fancy cover to stop drips on the floor. I colle=
ct
>> my Healey oil in a small swimming pool I constructed to hold leaks, whil=
e
>> in storage. Then some kerosene quickly cleans up the mess when the car i=
s
>> moved. Since they no longer oil the roadways, think of the benifit you a=
re
>> supplying to the asphalt in longer life. Hank-------------------
>>
>> From: "Bob Spidell" <[email-masked]>
>> To: "Healeys" <[email-masked]>
>> Sent: June 18, 2024 at 10:03 AM PDT
>> Subject: [Healeys] Lightened Flywheels
>> Listers,
>> I know this one has been discussed--well, beat to death--but it looks
>> like I'll have to pull my BJ8's gearbox/OD to replace a leaky front seal=
,
>> so I'm thinking of installing a lightened flywheel while I'm at it. My m=
ain
>> reason for considering it is to stop some pretty significant run-on
>> ('dieseling,' which I get on my BN2 as well). I'm not totally comfortabl=
e
>> with dropping the clutch in gear to stop it, and any performance
>> improvements would be a plus. It just so happens I just caught an episod=
e
>> of 'Engine Masters' on MotorTrend TV, where they seriously reduced the
>> rotating mass of an engine--an SBC, which is what they mostly do--and go=
t
>> some interesting results: more HP and torque, as measured on a topnotch
>> dyno. The gains were shown primarily on acceleration which, intuitively =
I
>> suppose, were greater when RPM was raised at 300RPM/minute vs. 600. Any
>> constant speed increases weren't addressed as far as I could tell. The
>> late, great Gary Andersen, who raced, said the main benefit was faster
>> spin-up for rev-matching downshifts; anyone noted any other significant
>> benefits? The 'Dyno Master' on EM said he'd seen timing chain failures w=
ith
>> lightened flywheels; my main concern for both my Healeys has been
>> reliability, with minimal maintenance required, but if it stops/minimize=
s
>> the run-on I'd be happy. Anyone know how far you can go lightening witho=
ut
>> adverse effects? TIA, Bob ______________________________________________=
_
>> Support Team.Net http://www.team.net/donate.html Suggested annual
>> donation $12.75 Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive/healeys [email-masked]
>> http://autox.team.net/mailman/listinfo/healeys Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/[email-masked]
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation  $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive/healeys
>>
>> [email-masked]
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/[email-masked]
>>
>>
>
>
> ---------- Forwarded message ----------
> From: Reinhart Rosner <[email-masked]>
> To: <[email-masked]>, "'Bob Spidell'" <[email-masked]>, <
> [email-masked]>
> Cc:
> Bcc:
> Date: Tue, 18 Jun 2024 22:24:24 +0200
> Subject: Re: [Healeys] *** SPAM *** Re:  Lightened Flywheels
>
> Run-on: My mechanic told me to use fuel with 98 octane (instead of 95) an=
d
> if it still happens to step on the gas pedal when shutting down the engin=
e.
> This works good for me.
>
> Reinhart
>
>
>
> Reinhart Rosner
>
> 55 100 BN 1
>
> Vienna - Austria
>
>
>
> *Von:* Healeys [mailto:[email-masked]] *Im Auftrag von *H=
ank
> Leach via Healeys
> *Gesendet:* Dienstag, 18. Juni 2024 20:11
> *An:* Bob Spidell; Healeys
> *Betreff:* *** SPAM *** Re: [Healeys] Lightened Flywheels
>
>
>
> The best way to stop run on is foot on brake, car in gear-It's not hurtin=
g
> anything and is recommended by the likes of Geoff Healey and others.
> Denotation has a worse effect on the engine.
>
> The downside of the lightened flywheel is a heavier clutch engagement.
> That said the heaviest part I ever picked up is a 100 flywheel.  Egad, wh=
at
> a hunk of metal!
> -However the issues with the flywheel/cracked crankshaft can be traced to
> a lack of a front pulley dampener and that might be the better solution t=
o
> the issue.  It may in fact make dumping the clutch easier on the
> drivetrain, but not proven. Since your problem is with the front of the
> engine, I would address the seal replacement -felt if you are a purest -o=
r
> yes, the modern solution fancy cover to stop drips on the floor. I collec=
t
> my Healey oil in a small swimming pool I constructed to hold leaks, while
> in storage. Then some kerosene quickly cleans up the mess when the car is
> moved. Since they no longer oil the roadways, think of the benifit you ar=
e
> supplying to the asphalt in longer life. Hank-------------------
>
> From: "Bob Spidell" <[email-masked]>
> To: "Healeys" <[email-masked]>
> Sent: June 18, 2024 at 10:03 AM PDT
> Subject: [Healeys] Lightened Flywheels
> Listers,
> I know this one has been discussed--well, beat to death--but it looks lik=
e
> I'll have to pull my BJ8's gearbox/OD to replace a leaky front seal, so I=
'm
> thinking of installing a lightened flywheel while I'm at it. My main reas=
on
> for considering it is to stop some pretty significant run-on ('dieseling,=
'
> which I get on my BN2 as well). I'm not totally comfortable with dropping
> the clutch in gear to stop it, and any performance improvements would be =
a
> plus. It just so happens I just caught an episode of 'Engine Masters' on
> MotorTrend TV, where they seriously reduced the rotating mass of an
> engine--an SBC, which is what they mostly do--and got some interesting
> results: more HP and torque, as measured on a topnotch dyno. The gains we=
re
> shown primarily on acceleration which, intuitively I suppose, were greate=
r
> when RPM was raised at 300RPM/minute vs. 600. Any constant speed increase=
s
> weren't addressed as far as I could tell. The late, great Gary Andersen,
> who raced, said the main benefit was faster spin-up for rev-matching
> downshifts; anyone noted any other significant benefits? The 'Dyno Master=
'
> on EM said he'd seen timing chain failures with lightened flywheels; my
> main concern for both my Healeys has been reliability, with minimal
> maintenance required, but if it stops/minimizes the run-on I'd be happy.
> Anyone know how far you can go lightening without adverse effects? TIA, B=
ob
>
>
>
> ---------- Forwarded message ----------
> From: Harold Manifold <[email-masked]>
> To: Michael Salter <[email-masked]>
> Cc: Hank Leach <[email-masked]>, Healeys <[email-masked]>
> Bcc:
> Date: Tue, 18 Jun 2024 14:07:39 -0700
> Subject: Re: [Healeys] Lightened Flywheels
> Bob,
>
> I lightened the flywheel on my BT7 with no ill effects. The engine is
> responsive and revs smoothly. The Healey's with the spring type clutch li=
ke
> mine have a heavier flywheel than the later flywheel used with the
> diaphragm clutch. To some degree BJ8's already have a lightened flywheel
> compared to the earlier 6 cylinder Healey's. Picture of the flywheel is
> attached.
>
> I use the technique described by Hank when shutting off the engine and
> there is no run on.
>
> Harold
>
> On Tue, Jun 18, 2024 at 1:13=E2=80=AFPM Michael Salter <michaelsalter@gma=
il.com>
> wrote:
>
>> When it comes to flywheel weight the 6 cylinder and 4 cylinder have
>> hugely different requirements.  The natural balance of the 6 means that
>> there is much less change in rotational speed during each revolution and
>> with the crankshaft itself being much heavier the gearbox requires much
>> less protection.
>> The type of driving that I do these days does not require "snappy" gear
>> changes so I would tend to leave the flywheel as designed as I really
>> appreciate the smoothness of the 6 cylinder engines however, each to his
>> own.
>> I  would definitely not lighten a 100 flywheel, particularly a BN1, for
>> fear of eventually damaging the gearbox for the reasons described in thi=
s
>> article.
>> https://precisionsportscar.com/austin-healey-100-crank-failures/
>>
>> M
>>
>> On Tue., Jun. 18, 2024, 2:48 p.m. Hank Leach via Healeys, <
>> [email-masked]> wrote:
>>
>>> The best way to stop run on is foot on brake, car in gear-It's not
>>> hurting anything and is recommended by the likes of Geoff Healey and
>>> others. Denotation has a worse effect on the engine.
>>> The downside of the lightened flywheel is a heavier clutch engagement.
>>> That said the heaviest part I ever picked up is a 100 flywheel.  Egad, =
what
>>> a hunk of metal!
>>> -However the issues with the flywheel/cracked crankshaft can be traced
>>> to a lack of a front pulley dampener and that might be the better solut=
ion
>>> to the issue.  It may in fact make dumping the clutch easier on the
>>> drivetrain, but not proven. Since your problem is with the front of the
>>> engine, I would address the seal replacement -felt if you are a purest =
-or
>>> yes, the modern solution fancy cover to stop drips on the floor. I coll=
ect
>>> my Healey oil in a small swimming pool I constructed to hold leaks, whi=
le
>>> in storage. Then some kerosene quickly cleans up the mess when the car =
is
>>> moved. Since they no longer oil the roadways, think of the benifit you =
are
>>> supplying to the asphalt in longer life. Hank-------------------
>>>
>>> From: "Bob Spidell" <[email-masked]>
>>> To: "Healeys" <[email-masked]>
>>> Sent: June 18, 2024 at 10:03 AM PDT
>>> Subject: [Healeys] Lightened Flywheels
>>> Listers,
>>> I know this one has been discussed--well, beat to death--but it looks
>>> like I'll have to pull my BJ8's gearbox/OD to replace a leaky front sea=
l,
>>> so I'm thinking of installing a lightened flywheel while I'm at it. My =
main
>>> reason for considering it is to stop some pretty significant run-on
>>> ('dieseling,' which I get on my BN2 as well). I'm not totally comfortab=
le
>>> with dropping the clutch in gear to stop it, and any performance
>>> improvements would be a plus. It just so happens I just caught an episo=
de
>>> of 'Engine Masters' on MotorTrend TV, where they seriously reduced the
>>> rotating mass of an engine--an SBC, which is what they mostly do--and g=
ot
>>> some interesting results: more HP and torque, as measured on a topnotch
>>> dyno. The gains were shown primarily on acceleration which, intuitively=
 I
>>> suppose, were greater when RPM was raised at 300RPM/minute vs. 600. Any
>>> constant speed increases weren't addressed as far as I could tell. The
>>> late, great Gary Andersen, who raced, said the main benefit was faster
>>> spin-up for rev-matching downshifts; anyone noted any other significant
>>> benefits? The 'Dyno Master' on EM said he'd seen timing chain failures =
with
>>> lightened flywheels; my main concern for both my Healeys has been
>>> reliability, with minimal maintenance required, but if it stops/minimiz=
es
>>> the run-on I'd be happy. Anyone know how far you can go lightening with=
out
>>> adverse effects? TIA, Bob _____________________________________________=
__
>>> Support Team.Net http://www.team.net/donate.html Suggested annual
>>> donation $12.75 Archive: http://www.team.net/pipermail/healeys
>>> http://autox.team.net/archive/healeys [email-masked]
>>> http://autox.team.net/mailman/listinfo/healeys Unsubscribe/Manage:
>>> http://autox.team.net/mailman/options/healeys/[email-masked]
>>> _______________________________________________
>>> Support Team.Net http://www.team.net/donate.html
>>> Suggested annual donation  $12.75
>>>
>>> Archive: http://www.team.net/pipermail/healeys
>>> http://autox.team.net/archive/healeys
>>>
>>> [email-masked]
>>> http://autox.team.net/mailman/listinfo/healeys
>>>
>>> Unsubscribe/Manage:
>>> http://autox.team.net/mailman/options/healeys/[email-masked]
>>>
>>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation  $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive/healeys
>>
>> [email-masked]
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/[email-masked]
>>
>> _______________________________________________
> Healeys mailing list
> [email-masked]
> http://autox.team.net/mailman/listinfo/healeys
>
> archives:  http://autox.team.net/archive
>
>

--000000000000475183061b446961
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:large">Re:=
=C2=A0 Lightened Flywheels</div><div class=3D"gmail_default" style=3D"font-=
size:large"><br></div><div class=3D"gmail_default" style=3D"font-size:large=
">Hi Bob:=C2=A0 I absolutely love the extra power (perceived or actual) in =
my Healeys with light flywheels.=C2=A0 My BN1 has one from DW that weighs a=
bout 12 pounds and I&#39;m using DW&#39;s damper on the front.=C2=A0 The ca=
r has an upgraded crankshaft and BN7 gearbox, so maybe that&#39;s kept it f=
rom flying apart.=C2=A0 My BN7 w/BJ8 cam has an alloy flywheel I got on eBa=
y that I think weighs about 20 pounds.=C2=A0 It runs smooth as=C2=A0silk wi=
th no ill effects.=C2=A0 I still can get occasional run-on though, with low=
er octane fuel.=C2=A0</div><div class=3D"gmail_default" style=3D"font-size:=
large"><br></div><div class=3D"gmail_default" style=3D"font-size:large">On =
the gearbox oil leaks, check the lower bell housing bolts which, at least o=
n the side shifts, extend into the gearbox and can leak.=C2=A0 Also, &quot;=
Quad Ring&quot; OD operating shaft seals are available from AH Spares, part=
 0VD185MS.=C2=A0 I haven&#39;t tried them yet, but it seems like they would=
 be an improvement over the single O rings generally used.=C2=A0=C2=A0</div=
><div class=3D"gmail_default" style=3D"font-size:large"><span style=3D"colo=
r:rgb(46,46,46);font-family:Roboto,sans-serif;font-size:13.6px">OVD185MS</s=
pan></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gm=
ail_attr">On Wed, Jun 19, 2024 at 10:59=E2=80=AFAM &lt;<a href=3D"mailto:he=
[email-masked]">[email-masked]</a>&gt; wrote:=
<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8=
ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class=3D"m=
sg5564609131821140015">Send Healeys mailing list submissions to<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:[email-masked]" targe=
t=3D"_blank">[email-masked]</a><br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"http://autox.team.net/mailman/listin=
fo/healeys" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mail=
man/listinfo/healeys</a><br>
or, via email, send a message with subject or body &#39;help&#39; to<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:[email-masked]=
t" target=3D"_blank">[email-masked]</a><br>
<br>
You can reach the person managing the list at<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"mailto:[email-masked]"=
 target=3D"_blank">[email-masked]</a><br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than &quot;Re: Contents of Healeys digest...&quot;<br>
Today&#39;s Topics:<br>
<br>
=C2=A0 =C2=A01. Re: Lightened Flywheels (Hank Leach)<br>
=C2=A0 =C2=A02. Re: Lightened Flywheels (Bob Spidell)<br>
=C2=A0 =C2=A03. Re: Lightened Flywheels (Hank Leach)<br>
=C2=A0 =C2=A04. Re: Lightened Flywheels (Michael Salter)<br>
=C2=A0 =C2=A05. Re: *** SPAM *** Re:=C2=A0 Lightened Flywheels (Reinhart Ro=
sner)<br>
=C2=A0 =C2=A06. Re: Lightened Flywheels (Harold Manifold)<br>
<br><br><br>---------- Forwarded message ----------<br>From:=C2=A0Hank Leac=
h &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">gradea1@char=
ter.net</a>&gt;<br>To:=C2=A0Bob Spidell &lt;<a href=3D"mailto:bspidell@comc=
ast.net" target=3D"_blank">[email-masked]</a>&gt;, Healeys &lt;<a hre=
f=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
t</a>&gt;<br>Cc:=C2=A0<br>Bcc:=C2=A0<br>Date:=C2=A0Tue, 18 Jun 2024 18:10:5=
0 +0000<br>Subject:=C2=A0Re: [Healeys] Lightened Flywheels<br><div>The best=
 way to stop run on is foot on brake, car in gear-It&#39;s not hurting anyt=
hing and is recommended by the likes of Geoff Healey and others. Denotation=
 has a worse effect on the engine.</div>
<div>The downside of the lightened flywheel is a heavier clutch engagement.=
 That said the heaviest part I ever picked up is a 100 flywheel.=C2=A0 Egad=
, what a hunk of metal!<br>-However the issues with the flywheel/cracked cr=
ankshaft can be traced to a lack of a front pulley dampener and that might =
be the better solution to the issue.=C2=A0 It may in fact make dumping the =
clutch easier on the drivetrain, but not proven. Since your problem is with=
 the front of the engine, I would address the seal replacement -felt if you=
 are a purest -or yes, the modern solution fancy cover to stop drips on the=
 floor. I collect my Healey oil in a small swimming pool I constructed to h=
old leaks, while in storage. Then some kerosene quickly cleans up the mess =
when the car is moved. Since they no longer oil the roadways, think of the =
benifit you are supplying to the asphalt in longer life. Hank--------------=
-----=C2=A0<br><br>From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:bspi=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; <br>To: &q=
uot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked]" target=3D"_=
blank">[email-masked]</a>&gt; <br>Sent: June 18, 2024 at 10:03 AM P=
DT <br>Subject: [Healeys] Lightened Flywheels <br>Listers,<br>I know this o=
ne has been discussed--well, beat to death--but it looks like I&#39;ll have=
 to pull my BJ8&#39;s gearbox/OD to replace a leaky front seal, so I&#39;m =
thinking of installing a lightened flywheel while I&#39;m at it. My main re=
ason for considering it is to stop some pretty significant run-on (&#39;die=
seling,&#39; which I get on my BN2 as well). I&#39;m not totally comfortabl=
e with dropping the clutch in gear to stop it, and any performance improvem=
ents would be a plus. It just so happens I just caught an episode of &#39;E=
ngine Masters&#39; on MotorTrend TV, where they seriously reduced the rotat=
ing mass of an engine--an SBC, which is what they mostly do--and got some i=
nteresting results: more HP and torque, as measured on a topnotch dyno. The=
 gains were shown primarily on acceleration which, intuitively I suppose, w=
ere greater when RPM was raised at 300RPM/minute vs. 600. Any constant spee=
d increases weren&#39;t addressed as far as I could tell. The late, great G=
ary Andersen, who raced, said the main benefit was faster spin-up for rev-m=
atching downshifts; anyone noted any other significant benefits? The &#39;D=
yno Master&#39; on EM said he&#39;d seen timing chain failures with lighten=
ed flywheels; my main concern for both my Healeys has been reliability, wit=
h minimal maintenance required, but if it stops/minimizes the run-on I&#39;=
d be happy. Anyone know how far you can go lightening without adverse effec=
ts? TIA, Bob _______________________________________________ Support Team.N=
et <a href=3D"http://www.team.net/donate.html" target=3D"_blank">http://www=
.team.net/donate.html</a> Suggested annual donation $12.75 Archive: <a href=
=3D"http://www.team.net/pipermail/healeys" target=3D"_blank">http://www.tea=
m.net/pipermail/healeys</a> <a href=3D"http://autox.team.net/archive/healey=
s" target=3D"_blank">http://autox.team.net/archive/healeys</a> <a href=3D"m=
ailto:[email-masked]" target=3D"_blank">[email-masked]</a> =
<a href=3D"http://autox.team.net/mailman/listinfo/healeys" target=3D"_blank=
">http://autox.team.net/mailman/listinfo/healeys</a> Unsubscribe/Manage: <a=
 href=3D"http://autox.team.net/mailman/options/healeys/[email-masked]"=
 target=3D"_blank">http://autox.team.net/mailman/options/healeys/gradea1@ch=
arter.net</a></div>

<br><br><br>---------- Forwarded message ----------<br>From:=C2=A0Bob Spide=
ll &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">bspidell@c=
omcast.net</a>&gt;<br>To:=C2=A0<a href=3D"mailto:[email-masked]" targe=
t=3D"_blank">[email-masked]</a>, Healeys &lt;<a href=3D"mailto:healeys=
@autox.team.net" target=3D"_blank">[email-masked]</a>&gt;<br>Cc:=C2=
=A0<br>Bcc:=C2=A0<br>Date:=C2=A0Tue, 18 Jun 2024 11:45:36 -0700<br>Subject:=
=C2=A0Re: [Healeys] Lightened Flywheels<br>Thanks, Hank. To clarify, the se=
al I need to replace is at the front of <br>
the gearbox; i.e. the input shaft seal on my BJ8 gearbox. I&#39;m pretty <b=
r>
sure that&#39;s the source of the leak--disappointing, since the rebuild <b=
r>
only a few years ago--because it smells like the MT-90 I use in my <br>
gearboxes (I know, syn leaks, but this box probably has 10K miles on it <br=
before it erupted). I also spent time and effort sealing the O/D drain, <br=
since I initially assumed it was the source of the leak. Makes me wonder <b=
r>
if seal quality has suffered, like a lot of things. Pretty sure I <br>
checked the input shaft for wear.<br>
<br>
I&#39;m about (re-convinced) to forgo a lightened flywheel, since it <br>
apparently causes no harm (just have to remember to do it). I&#39;ve heard =
<br>
it can actually cause an engine to run backwards, which would be all <br>
kinds of bad.<br>
<br>
bs<br>
<br>
On 6/18/2024 11:10 AM, Hank Leach wrote:<br>
&gt; The best way to stop run on is foot on brake, car in gear-It&#39;s not=
 <br>
&gt; hurting anything and is recommended by the likes of Geoff Healey and <=
br>
&gt; others. Denotation has a worse effect on the engine.<br>
&gt; The downside of the lightened flywheel is a heavier clutch engagement.=
 <br>
&gt; That said the heaviest part I ever picked up is a 100 flywheel.=C2=A0 =
Egad, <br>
&gt; what a hunk of metal!<br>
&gt; -However the issues with the flywheel/cracked crankshaft can be traced=
 <br>
&gt; to a lack of a front pulley dampener and that might be the better <br>
&gt; solution to the issue.=C2=A0 It may in fact make dumping the clutch ea=
sier <br>
&gt; on the drivetrain, but not proven. Since your problem is with the <br>
&gt; front of the engine, I would address the seal replacement -felt if you=
 <br>
&gt; are a purest -or yes, the modern solution fancy cover to stop drips on=
 <br>
&gt; the floor. I collect my Healey oil in a small swimming pool I <br>
&gt; constructed to hold leaks, while in storage. Then some kerosene <br>
&gt; quickly cleans up the mess when the car is moved. Since they no longer=
 <br>
&gt; oil the roadways, think of the benifit you are supplying to the <br>
&gt; asphalt in longer life. Hank-------------------<br>
&gt;<br>
&gt; From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:[email-masked]=
et" target=3D"_blank">[email-masked]</a>&gt;<br>
&gt; To: &quot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt;<br>
&gt; Sent: June 18, 2024 at 10:03 AM PDT<br>
&gt; Subject: [Healeys] Lightened Flywheels<br>
&gt; Listers,<br>
&gt; I know this one has been discussed--well, beat to death--but it looks =
<br>
&gt; like I&#39;ll have to pull my BJ8&#39;s gearbox/OD to replace a leaky =
front <br>
&gt; seal, so I&#39;m thinking of installing a lightened flywheel while I&#=
39;m at <br>
&gt; it. My main reason for considering it is to stop some pretty <br>
&gt; significant run-on (&#39;dieseling,&#39; which I get on my BN2 as well=
). I&#39;m <br>
&gt; not totally comfortable with dropping the clutch in gear to stop it, <=
br>
&gt; and any performance improvements would be a plus. It just so happens I=
 <br>
&gt; just caught an episode of &#39;Engine Masters&#39; on MotorTrend TV, w=
here <br>
&gt; they seriously reduced the rotating mass of an engine--an SBC, which <=
br>
&gt; is what they mostly do--and got some interesting results: more HP and =
<br>
&gt; torque, as measured on a topnotch dyno. The gains were shown primarily=
 <br>
&gt; on acceleration which, intuitively I suppose, were greater when RPM <b=
r>
&gt; was raised at 300RPM/minute vs. 600. Any constant speed increases <br>
&gt; weren&#39;t addressed as far as I could tell. The late, great Gary <br=
&gt; Andersen, who raced, said the main benefit was faster spin-up for <br>
&gt; rev-matching downshifts; anyone noted any other significant benefits? =
<br>
&gt; The &#39;Dyno Master&#39; on EM said he&#39;d seen timing chain failur=
es with <br>
&gt; lightened flywheels; my main concern for both my Healeys has been <br>
&gt; reliability, with minimal maintenance required, but if it <br>
&gt; stops/minimizes the run-on I&#39;d be happy. Anyone know how far you c=
an <br>
&gt; go lightening without adverse effects? TIA, Bob <br>
&gt; _______________________________________________ Support Team.Net <br>
&gt; <a href=3D"http://www.team.net/donate.html" rel=3D"noreferrer" target=
=3D"_blank">http://www.team.net/donate.html</a> Suggested annual donation $=
12.75 <br>
&gt; Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"nore=
ferrer" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <br>
&gt; <a href=3D"http://autox.team.net/archive/healeys" rel=3D"noreferrer" t=
arget=3D"_blank">http://autox.team.net/archive/healeys</a> <a href=3D"mailt=
o:[email-masked]" target=3D"_blank">[email-masked]</a> <br>
&gt; <a href=3D"http://autox.team.net/mailman/listinfo/healeys" rel=3D"nore=
ferrer" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a=
> Unsubscribe/Manage: <br>
&gt; <a href=3D"http://autox.team.net/mailman/options/healeys/gradea1@chart=
er.net" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/mailman/=
options/healeys/[email-masked]</a><br>
<br>
<br>
<br><br><br>---------- Forwarded message ----------<br>From:=C2=A0Hank Leac=
h &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">gradea1@char=
ter.net</a>&gt;<br>To:=C2=A0Bob Spidell &lt;<a href=3D"mailto:bspidell@comc=
ast.net" target=3D"_blank">[email-masked]</a>&gt;, Healeys &lt;<a hre=
f=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
t</a>&gt;<br>Cc:=C2=A0<br>Bcc:=C2=A0<br>Date:=C2=A0Tue, 18 Jun 2024 18:57:1=
2 +0000<br>Subject:=C2=A0Re: [Healeys] Lightened Flywheels<br><div>OK BJ8 i=
ssue...that is a lighter flywheel.=C2=A0 I still recommend dumping the clut=
ch to stop any run-on. Might check your timing with a light and set it to 1=
7 degrees to compensate for the lousy fuel we get today. That appears to tb=
e the magic number for most of the old British iron- used to 95+ octane fue=
ls. When those cars were built there was no corn in the fuel. Sad that many=
 of our classics are now running on volts and amps.</div>
<div>An aside-on the old 100 gearbox, with just rifling for a seal, I add a=
n o-ring to the input shaft to &quot;contain the spinout. Hank<br>---------=
----------- <br><br>From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:bsp=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; <br>To: &=
lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">gradea1@charter=
.net</a>&gt;, &quot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked].=
net" target=3D"_blank">[email-masked]</a>&gt; <br>Sent: June 18, 20=
24 at 11:46 AM PDT <br>Subject: Re: [Healeys] Lightened Flywheels <br>Thank=
s, Hank. To clarify, the seal I need to replace is at the front of the gear=
box; i.e. the input shaft seal on my BJ8 gearbox. I&#39;m pretty sure that&=
#39;s the source of the leak--disappointing, since the rebuild only a few y=
ears ago--because it smells like the MT-90 I use in my gearboxes (I know, s=
yn leaks, but this box probably has 10K miles on it before it erupted). I a=
lso spent time and effort sealing the O/D drain, since I initially assumed =
it was the source of the leak. Makes me wonder if seal quality has suffered=
, like a lot of things. Pretty sure I checked the input shaft for wear.<br>=
I&#39;m about (re-convinced) to forgo a lightened flywheel, since it appare=
ntly causes no harm (just have to remember to do it). I&#39;ve heard it can=
 actually cause an engine to run backwards, which would be all kinds of bad=
. bs On 6/18/2024 11:10 AM, Hank Leach wrote: &gt; The best way to stop run=
 on is foot on brake, car in gear-It&#39;s not &gt; hurting anything and is=
 recommended by the likes of Geoff Healey and &gt; others. Denotation has a=
 worse effect on the engine. &gt; The downside of the lightened flywheel is=
 a heavier clutch engagement. &gt; That said the heaviest part I ever picke=
d up is a 100 flywheel.=C2=A0 Egad, &gt; what a hunk of metal! &gt; -Howeve=
r the issues with the flywheel/cracked crankshaft can be traced &gt; to a l=
ack of a front pulley dampener and that might be the better &gt; solution t=
o the issue.=C2=A0 It may in fact make dumping the clutch easier &gt; on th=
e drivetrain, but not proven. Since your problem is with the &gt; front of =
the engine, I would address the seal replacement -felt if you &gt; are a pu=
rest -or yes, the modern solution fancy cover to stop drips on &gt; the flo=
or. I collect my Healey oil in a small swimming pool I &gt; constructed to =
hold leaks, while in storage. Then some kerosene &gt; quickly cleans up the=
 mess when the car is moved. Since they no longer &gt; oil the roadways, th=
ink of the benifit you are supplying to the &gt; asphalt in longer life. Ha=
nk------------------- &gt; &gt; From: &quot;Bob Spidell&quot; &lt;<a href=
=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]</a>=
&gt; &gt; To: &quot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked].=
net" target=3D"_blank">[email-masked]</a>&gt; &gt; Sent: June 18, 2=
024 at 10:03 AM PDT &gt; Subject: [Healeys] Lightened Flywheels &gt; Lister=
s, &gt; I know this one has been discussed--well, beat to death--but it loo=
ks &gt; like I&#39;ll have to pull my BJ8&#39;s gearbox/OD to replace a lea=
ky front &gt; seal, so I&#39;m thinking of installing a lightened flywheel =
while I&#39;m at &gt; it. My main reason for considering it is to stop some=
 pretty &gt; significant run-on (&#39;dieseling,&#39; which I get on my BN2=
 as well). I&#39;m &gt; not totally comfortable with dropping the clutch in=
 gear to stop it, &gt; and any performance improvements would be a plus. It=
 just so happens I &gt; just caught an episode of &#39;Engine Masters&#39; =
on MotorTrend TV, where &gt; they seriously reduced the rotating mass of an=
 engine--an SBC, which &gt; is what they mostly do--and got some interestin=
g results: more HP and &gt; torque, as measured on a topnotch dyno. The gai=
ns were shown primarily &gt; on acceleration which, intuitively I suppose, =
were greater when RPM &gt; was raised at 300RPM/minute vs. 600. Any constan=
t speed increases &gt; weren&#39;t addressed as far as I could tell. The la=
te, great Gary &gt; Andersen, who raced, said the main benefit was faster s=
pin-up for &gt; rev-matching downshifts; anyone noted any other significant=
 benefits? &gt; The &#39;Dyno Master&#39; on EM said he&#39;d seen timing c=
hain failures with &gt; lightened flywheels; my main concern for both my He=
aleys has been &gt; reliability, with minimal maintenance required, but if =
it &gt; stops/minimizes the run-on I&#39;d be happy. Anyone know how far yo=
u can &gt; go lightening without adverse effects? TIA, Bob &gt; ___________=
____________________________________ Support Team.Net &gt; <a href=3D"http:=
//www.team.net/donate.html" target=3D"_blank">http://www.team.net/donate.ht=
ml</a> Suggested annual donation $12.75 &gt; Archive: <a href=3D"http://www=
.team.net/pipermail/healeys" target=3D"_blank">http://www.team.net/pipermai=
l/healeys</a> &gt; <a href=3D"http://autox.team.net/archive/healeys" target=
=3D"_blank">http://autox.team.net/archive/healeys</a> <a href=3D"mailto:Hea=
[email-masked]" target=3D"_blank">[email-masked]</a> &gt; <a h=
ref=3D"http://autox.team.net/mailman/listinfo/healeys" target=3D"_blank">ht=
tp://autox.team.net/mailman/listinfo/healeys</a> Unsubscribe/Manage: &gt; <=
a href=3D"http://autox.team.net/mailman/options/healeys/[email-masked]=
" target=3D"_blank">http://autox.team.net/mailman/options/healeys/gradea1@c=
harter.net</a></div>

<br><br><br>---------- Forwarded message ----------<br>From:=C2=A0Michael S=
alter &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">mich=
[email-masked]</a>&gt;<br>To:=C2=A0Hank Leach &lt;<a href=3D"mailto:gr=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt;<br>Cc:=C2=
=A0Bob Spidell &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank=
">[email-masked]</a>&gt;, Healeys &lt;<a href=3D"mailto:healeys@autox=
.team.net" target=3D"_blank">[email-masked]</a>&gt;<br>Bcc:=C2=A0<b=
r>Date:=C2=A0Tue, 18 Jun 2024 15:20:15 -0400<br>Subject:=C2=A0Re: [Healeys]=
 Lightened Flywheels<br><div dir=3D"auto">When it comes to flywheel weight =
the 6 cylinder and 4 cylinder have hugely different requirements.=C2=A0 The=
 natural balance of the 6 means that there is much less change in rotationa=
l speed during each revolution and with the crankshaft itself being much he=
avier the gearbox requires much less protection.=C2=A0<div dir=3D"auto">The=
 type of driving that I do these days does not require &quot;snappy&quot; g=
ear changes so I would tend to leave the flywheel as designed as I really a=
ppreciate the smoothness of the 6 cylinder engines however, each to his own=
.</div><div dir=3D"auto">I=C2=A0 would definitely not lighten a 100 flywhee=
l, particularly a BN1, for fear of eventually damaging the gearbox for the =
reasons described in this article.=C2=A0</div><div dir=3D"auto"><a href=3D"=
https://precisionsportscar.com/austin-healey-100-crank-failures/" target=3D=
"_blank">https://precisionsportscar.com/austin-healey-100-crank-failures/</=
a><br></div><div dir=3D"auto"><br></div><div dir=3D"auto">M</div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue., J=
un. 18, 2024, 2:48 p.m. Hank Leach via Healeys, &lt;<a href=3D"mailto:heale=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrote:<=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>The best wa=
y to stop run on is foot on brake, car in gear-It&#39;s not hurting anythin=
g and is recommended by the likes of Geoff Healey and others. Denotation ha=
s a worse effect on the engine.</div>
<div>The downside of the lightened flywheel is a heavier clutch engagement.=
 That said the heaviest part I ever picked up is a 100 flywheel.=C2=A0 Egad=
, what a hunk of metal!<br>-However the issues with the flywheel/cracked cr=
ankshaft can be traced to a lack of a front pulley dampener and that might =
be the better solution to the issue.=C2=A0 It may in fact make dumping the =
clutch easier on the drivetrain, but not proven. Since your problem is with=
 the front of the engine, I would address the seal replacement -felt if you=
 are a purest -or yes, the modern solution fancy cover to stop drips on the=
 floor. I collect my Healey oil in a small swimming pool I constructed to h=
old leaks, while in storage. Then some kerosene quickly cleans up the mess =
when the car is moved. Since they no longer oil the roadways, think of the =
benifit you are supplying to the asphalt in longer life. Hank--------------=
-----=C2=A0<br><br>From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:bspi=
[email-masked]" rel=3D"noreferrer" target=3D"_blank">[email-masked]=
</a>&gt; <br>To: &quot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked]=
am.net" rel=3D"noreferrer" target=3D"_blank">[email-masked]</a>&gt;=
 <br>Sent: June 18, 2024 at 10:03 AM PDT <br>Subject: [Healeys] Lightened F=
lywheels <br>Listers,<br>I know this one has been discussed--well, beat to =
death--but it looks like I&#39;ll have to pull my BJ8&#39;s gearbox/OD to r=
eplace a leaky front seal, so I&#39;m thinking of installing a lightened fl=
ywheel while I&#39;m at it. My main reason for considering it is to stop so=
me pretty significant run-on (&#39;dieseling,&#39; which I get on my BN2 as=
 well). I&#39;m not totally comfortable with dropping the clutch in gear to=
 stop it, and any performance improvements would be a plus. It just so happ=
ens I just caught an episode of &#39;Engine Masters&#39; on MotorTrend TV, =
where they seriously reduced the rotating mass of an engine--an SBC, which =
is what they mostly do--and got some interesting results: more HP and torqu=
e, as measured on a topnotch dyno. The gains were shown primarily on accele=
ration which, intuitively I suppose, were greater when RPM was raised at 30=
0RPM/minute vs. 600. Any constant speed increases weren&#39;t addressed as =
far as I could tell. The late, great Gary Andersen, who raced, said the mai=
n benefit was faster spin-up for rev-matching downshifts; anyone noted any =
other significant benefits? The &#39;Dyno Master&#39; on EM said he&#39;d s=
een timing chain failures with lightened flywheels; my main concern for bot=
h my Healeys has been reliability, with minimal maintenance required, but i=
f it stops/minimizes the run-on I&#39;d be happy. Anyone know how far you c=
an go lightening without adverse effects? TIA, Bob ________________________=
_______________________ Support Team.Net <a href=3D"http://www.team.net/don=
ate.html" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/donate.h=
tml</a> Suggested annual donation $12.75 Archive: <a href=3D"http://www.tea=
m.net/pipermail/healeys" rel=3D"noreferrer" target=3D"_blank">http://www.te=
am.net/pipermail/healeys</a> <a href=3D"http://autox.team.net/archive/heale=
ys" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/archive/heal=
eys</a> <a href=3D"mailto:[email-masked]" rel=3D"noreferrer" target=
=3D"_blank">[email-masked]</a> <a href=3D"http://autox.team.net/mai=
lman/listinfo/healeys" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/listinfo/healeys</a> Unsubscribe/Manage: <a href=3D"http://a=
utox.team.net/mailman/options/healeys/[email-masked]" rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/options/healeys/gradea1@=
charter.net</a></div>
_______________________________________________<br>
rer noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
r noreferrer" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <=
a href=3D"http://autox.team.net/archive/healeys" rel=3D"noreferrer noreferr=
er" target=3D"_blank">http://autox.team.net/archive/healeys</a><br>
<br>
<a href=3D"mailto:[email-masked]" rel=3D"noreferrer" target=3D"_bla=
nk">[email-masked]</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys" rel=3D"noreferre=
r noreferrer" target=3D"_blank">http://autox.team.net/mailman/listinfo/heal=
eys</a><br>
<br>
s/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"_blank">=
http://autox.team.net/mailman/options/healeys/[email-masked]</a><b=
r>
<br>
</blockquote></div>
<br><br><br>---------- Forwarded message ----------<br>From:=C2=A0Reinhart =
Rosner &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">rein=
[email-masked]</a>&gt;<br>To:=C2=A0&lt;<a href=3D"mailto:gradea1@charte=
r.net" target=3D"_blank">[email-masked]</a>&gt;, &quot;&#39;Bob Spidel=
l&#39;&quot; &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">=
[email-masked]</a>&gt;, &lt;<a href=3D"mailto:[email-masked]"=
 target=3D"_blank">[email-masked]</a>&gt;<br>Cc:=C2=A0<br>Bcc:=C2=
=A0<br>Date:=C2=A0Tue, 18 Jun 2024 22:24:24 +0200<br>Subject:=C2=A0Re: [Hea=
leys] *** SPAM *** Re:=C2=A0 Lightened Flywheels<br><div lang=3D"DE-AT"><di=
v class=3D"m_5564609131821140015WordSection1"><p class=3D"MsoNormal"><span =
lang=3D"EN-GB" style=3D"font-size:11pt;font-family:Calibri,&quot;sans-serif=
&quot;;color:rgb(31,73,125)">Run-on: My mechanic told me to use fuel with 9=
8 octane (instead of 95) and if it still happens to step on the gas pedal w=
hen shutting down the engine. This works good for me. <u></u><u></u></span>=
</p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibr=
i,&quot;sans-serif&quot;;color:rgb(31,73,125)">Reinhart<u></u><u></u></span=
></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calib=
ri,&quot;sans-serif&quot;;color:rgb(31,73,125)"><u></u>=C2=A0<u></u></span>=
</p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-family:Calibr=
i,&quot;sans-serif&quot;;color:rgb(31,73,125)">Reinhart Rosner<u></u><u></u=
></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-famil=
y:Calibri,&quot;sans-serif&quot;;color:rgb(31,73,125)">55 100 BN 1<u></u><u=
></u></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11pt;font-f=
amily:Calibri,&quot;sans-serif&quot;;color:rgb(31,73,125)">Vienna - Austria=
<u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-size:11=
pt;font-family:Calibri,&quot;sans-serif&quot;;color:rgb(31,73,125)"><u></u>=
=C2=A0<u></u></span></p><p class=3D"MsoNormal"><b><span lang=3D"DE" style=
=3D"font-size:10pt;font-family:Tahoma,&quot;sans-serif&quot;">Von:</span></=
b><span lang=3D"DE" style=3D"font-size:10pt;font-family:Tahoma,&quot;sans-s=
erif&quot;"> Healeys [mailto:<a href=3D"mailto:[email-masked]=
et" target=3D"_blank">[email-masked]</a>] <b>Im Auftrag von=
 </b>Hank Leach via Healeys<br><b>Gesendet:</b> Dienstag, 18. Juni 2024 20:=
11<br><b>An:</b> Bob Spidell; Healeys<br><b>Betreff:</b> *** SPAM *** Re: [=
Healeys] Lightened Flywheels<u></u><u></u></span></p><p class=3D"MsoNormal"=
><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNormal">The best way to stop r=
un on is foot on brake, car in gear-It&#39;s not hurting anything and is re=
commended by the likes of Geoff Healey and others. Denotation has a worse e=
ffect on the engine.<u></u><u></u></p></div><div><p class=3D"MsoNormal">The=
 downside of the lightened flywheel is a heavier clutch engagement. That sa=
id the heaviest part I ever picked up is a 100 flywheel.=C2=A0 Egad, what a=
 hunk of metal!<br>-However the issues with the flywheel/cracked crankshaft=
 can be traced to a lack of a front pulley dampener and that might be the b=
etter solution to the issue.=C2=A0 It may in fact make dumping the clutch e=
asier on the drivetrain, but not proven. Since your problem is with the fro=
nt of the engine, I would address the seal replacement -felt if you are a p=
urest -or yes, the modern solution fancy cover to stop drips on the floor. =
I collect my Healey oil in a small swimming pool I constructed to hold leak=
s, while in storage. Then some kerosene quickly cleans up the mess when the=
 car is moved. Since they no longer oil the roadways, think of the benifit =
you are supplying to the asphalt in longer life. Hank-------------------=C2=
=A0<br><br>From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:bspidell@com=
cast.net" target=3D"_blank">[email-masked]</a>&gt; <br>To: &quot;Heal=
eys&quot; &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">h=
[email-masked]</a>&gt; <br>Sent: June 18, 2024 at 10:03 AM PDT <br>S=
ubject: [Healeys] Lightened Flywheels <br>Listers,<br>I know this one has b=
een discussed--well, beat to death--but it looks like I&#39;ll have to pull=
 my BJ8&#39;s gearbox/OD to replace a leaky front seal, so I&#39;m thinking=
 of installing a lightened flywheel while I&#39;m at it. My main reason for=
 considering it is to stop some pretty significant run-on (&#39;dieseling,&=
#39; which I get on my BN2 as well). I&#39;m not totally comfortable with d=
ropping the clutch in gear to stop it, and any performance improvements wou=
ld be a plus. It just so happens I just caught an episode of &#39;Engine Ma=
sters&#39; on MotorTrend TV, where they seriously reduced the rotating mass=
 of an engine--an SBC, which is what they mostly do--and got some interesti=
ng results: more HP and torque, as measured on a topnotch dyno. The gains w=
ere shown primarily on acceleration which, intuitively I suppose, were grea=
ter when RPM was raised at 300RPM/minute vs. 600. Any constant speed increa=
ses weren&#39;t addressed as far as I could tell. The late, great Gary Ande=
rsen, who raced, said the main benefit was faster spin-up for rev-matching =
downshifts; anyone noted any other significant benefits? The &#39;Dyno Mast=
er&#39; on EM said he&#39;d seen timing chain failures with lightened flywh=
eels; my main concern for both my Healeys has been reliability, with minima=
l maintenance required, but if it stops/minimizes the run-on I&#39;d be hap=
py. Anyone know how far you can go lightening without adverse effects? TIA,=
 Bob <span style=3D"color:rgb(31,73,125)"><u></u><u></u></span></p></div></=
div></div><br><br><br>---------- Forwarded message ----------<br>From:=C2=
=A0Harold Manifold &lt;<a href=3D"mailto:[email-masked]" target=3D"_bla=
nk">[email-masked]</a>&gt;<br>To:=C2=A0Michael Salter &lt;<a href=3D"ma=
ilto:[email-masked]" target=3D"_blank">[email-masked]</a>=
&gt;<br>Cc:=C2=A0Hank Leach &lt;<a href=3D"mailto:[email-masked]" targ=
et=3D"_blank">[email-masked]</a>&gt;, Healeys &lt;<a href=3D"mailto:he=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt;<br>B=
cc:=C2=A0<br>Date:=C2=A0Tue, 18 Jun 2024 14:07:39 -0700<br>Subject:=C2=A0Re=
: [Healeys] Lightened Flywheels<br><div dir=3D"ltr">Bob,<div><br></div><div=
>I lightened the flywheel on my BT7 with no ill effects. The engine is resp=
onsive and revs smoothly. The Healey&#39;s with the spring type clutch like=
 mine have a heavier flywheel than the later flywheel used with the diaphra=
gm=C2=A0clutch. To some degree BJ8&#39;s already have a lightened flywheel =
compared to the earlier 6 cylinder Healey&#39;s. Picture of the flywheel is=
 attached.</div><div><br></div><div>I use the technique described by Hank w=
hen shutting off the engine and there is no run on.</div><div><br></div><di=
v>Harold</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Tue, Jun 18, 2024 at 1:13=E2=80=AFPM Michael Salter &lt;=
<a href=3D"mailto:[email-masked]" target=3D"_blank">michaelsalter@=
gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"auto">When it comes to flywheel weight the 6 cylinde=
r and 4 cylinder have hugely different requirements.=C2=A0 The natural bala=
nce of the 6 means that there is much less change in rotational speed durin=
g each revolution and with the crankshaft itself being much heavier the gea=
rbox requires much less protection.=C2=A0<div dir=3D"auto">The type of driv=
ing that I do these days does not require &quot;snappy&quot; gear changes s=
o I would tend to leave the flywheel as designed as I really appreciate the=
 smoothness of the 6 cylinder engines however, each to his own.</div><div d=
ir=3D"auto">I=C2=A0 would definitely not lighten a 100 flywheel, particular=
ly a BN1, for fear of eventually damaging the gearbox for the reasons descr=
ibed in this article.=C2=A0</div><div dir=3D"auto"><a href=3D"https://preci=
sionsportscar.com/austin-healey-100-crank-failures/" target=3D"_blank">http=
s://precisionsportscar.com/austin-healey-100-crank-failures/</a><br></div><=
div dir=3D"auto"><br></div><div dir=3D"auto">M</div></div><br><div class=3D=
"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue., Jun. 18, 2024,=
 2:48 p.m. Hank Leach via Healeys, &lt;<a href=3D"mailto:[email-masked]=
.net" target=3D"_blank">[email-masked]</a>&gt; wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
:1px solid rgb(204,204,204);padding-left:1ex"><div>The best way to stop run=
 on is foot on brake, car in gear-It&#39;s not hurting anything and is reco=
mmended by the likes of Geoff Healey and others. Denotation has a worse eff=
ect on the engine.</div>
<div>The downside of the lightened flywheel is a heavier clutch engagement.=
 That said the heaviest part I ever picked up is a 100 flywheel.=C2=A0 Egad=
, what a hunk of metal!<br>-However the issues with the flywheel/cracked cr=
ankshaft can be traced to a lack of a front pulley dampener and that might =
be the better solution to the issue.=C2=A0 It may in fact make dumping the =
clutch easier on the drivetrain, but not proven. Since your problem is with=
 the front of the engine, I would address the seal replacement -felt if you=
 are a purest -or yes, the modern solution fancy cover to stop drips on the=
 floor. I collect my Healey oil in a small swimming pool I constructed to h=
old leaks, while in storage. Then some kerosene quickly cleans up the mess =
when the car is moved. Since they no longer oil the roadways, think of the =
benifit you are supplying to the asphalt in longer life. Hank--------------=
-----=C2=A0<br><br>From: &quot;Bob Spidell&quot; &lt;<a href=3D"mailto:bspi=
[email-masked]" rel=3D"noreferrer" target=3D"_blank">[email-masked]=
</a>&gt; <br>To: &quot;Healeys&quot; &lt;<a href=3D"mailto:[email-masked]=
am.net" rel=3D"noreferrer" target=3D"_blank">[email-masked]</a>&gt;=
 <br>Sent: June 18, 2024 at 10:03 AM PDT <br>Subject: [Healeys] Lightened F=
lywheels <br>Listers,<br>I know this one has been discussed--well, beat to =
death--but it looks like I&#39;ll have to pull my BJ8&#39;s gearbox/OD to r=
eplace a leaky front seal, so I&#39;m thinking of installing a lightened fl=
ywheel while I&#39;m at it. My main reason for considering it is to stop so=
me pretty significant run-on (&#39;dieseling,&#39; which I get on my BN2 as=
 well). I&#39;m not totally comfortable with dropping the clutch in gear to=
 stop it, and any performance improvements would be a plus. It just so happ=
ens I just caught an episode of &#39;Engine Masters&#39; on MotorTrend TV, =
where they seriously reduced the rotating mass of an engine--an SBC, which =
is what they mostly do--and got some interesting results: more HP and torqu=
e, as measured on a topnotch dyno. The gains were shown primarily on accele=
ration which, intuitively I suppose, were greater when RPM was raised at 30=
0RPM/minute vs. 600. Any constant speed increases weren&#39;t addressed as =
far as I could tell. The late, great Gary Andersen, who raced, said the mai=
n benefit was faster spin-up for rev-matching downshifts; anyone noted any =
other significant benefits? The &#39;Dyno Master&#39; on EM said he&#39;d s=
een timing chain failures with lightened flywheels; my main concern for bot=
h my Healeys has been reliability, with minimal maintenance required, but i=
f it stops/minimizes the run-on I&#39;d be happy. Anyone know how far you c=
an go lightening without adverse effects? TIA, Bob ________________________=
_______________________ Support Team.Net <a href=3D"http://www.team.net/don=
ate.html" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/donate.h=
tml</a> Suggested annual donation $12.75 Archive: <a href=3D"http://www.tea=
m.net/pipermail/healeys" rel=3D"noreferrer" target=3D"_blank">http://www.te=
am.net/pipermail/healeys</a> <a href=3D"http://autox.team.net/archive/heale=
ys" rel=3D"noreferrer" target=3D"_blank">http://autox.team.net/archive/heal=
eys</a> <a href=3D"mailto:[email-masked]" rel=3D"noreferrer" target=
=3D"_blank">[email-masked]</a> <a href=3D"http://autox.team.net/mai=
lman/listinfo/healeys" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/listinfo/healeys</a> Unsubscribe/Manage: <a href=3D"http://a=
utox.team.net/mailman/options/healeys/[email-masked]" rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/options/healeys/gradea1@=
charter.net</a></div>
_______________________________________________<br>
rer noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
r noreferrer" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <=
a href=3D"http://autox.team.net/archive/healeys" rel=3D"noreferrer noreferr=
er" target=3D"_blank">http://autox.team.net/archive/healeys</a><br>
<br>
<a href=3D"mailto:[email-masked]" rel=3D"noreferrer" target=3D"_bla=
nk">[email-masked]</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys" rel=3D"noreferre=
r noreferrer" target=3D"_blank">http://autox.team.net/mailman/listinfo/heal=
eys</a><br>
<br>
s/[email-masked]" rel=3D"noreferrer noreferrer" target=3D"_blank">=
http://autox.team.net/mailman/options/healeys/[email-masked]</a><b=
r>
<br>
</blockquote></div>
_______________________________________________<br>
rer" target=3D"_blank">http://www.team.net/donate.html</a><br>
<br>
Archive: <a href=3D"http://www.team.net/pipermail/healeys" rel=3D"noreferre=
r" target=3D"_blank">http://www.team.net/pipermail/healeys</a> <a href=3D"h=
ttp://autox.team.net/archive/healeys" rel=3D"noreferrer" target=3D"_blank">=
http://autox.team.net/archive/healeys</a><br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
eam.net</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys" rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
s/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.tea=
m.net/mailman/options/healeys/[email-masked]</a><br>
<br>
</blockquote></div>
_______________________________________________<br>
Healeys mailing list<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
eam.net</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys" rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/listinfo/healeys</a><br>
<br>
archives:=C2=A0 <a href=3D"http://autox.team.net/archive" rel=3D"noreferrer=
" target=3D"_blank">http://autox.team.net/archive</a><br>
<br>
</div></blockquote></div>

--000000000000475183061b446961--

--===============9193972896691258688==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

[email-masked]
http://autox.team.net/mailman/listinfo/healeys

--===============9193972896691258688==--

---

From: Bob Spidell <[email-masked]> Ml3gF7M9xJ5y2KTnBbiQ145WxnfrMLKg6tFrFYPjnG1qNMRrfqkerwMFbQ9ohMpAd5edw/gOIcjjriiQuxxPFVERxexZdW3h+1U=
Date: Thu, 20 Jun 2024 07:29:54 -0700

This is a multi-part message in MIME format.
--------------leGmqUjZFISnl0fOz1NssLfc
 boundary="------------wxXyRvQeL4fr9wIVBZ03A2kC"

--------------wxXyRvQeL4fr9wIVBZ03A2kC
Content-Transfer-Encoding: 8bit

Thanks for the input Craig. I'm still debating the flywheel; hopefully, 
my path will be apparent when I get the box out.

I'll be checking the bell housing bolts, and the input shaft for wear. I 
already have the OD operating shaft 'quad rings,' I got them as soon as 
I saw Roger Moment's article (long story about the seller).

Bob

On 6/19/2024 1:54 PM, Craig Cooper wrote:
> Healeys with light flywheels.  My BN1 has one from DW that weighs 
> about 12 pounds and I'm using DW's damper on the front.  The car has 
> an upgraded crankshaft and BN7 gearbox, so maybe that's kept it from 
> flying apart.  My BN7 w/BJ8 cam has an alloy flywheel I got on eBay 
> that I think weighs about 20 pounds.  It runs smooth as silk with no 
> ill effects.  I still can get occasional run-on though, with lower 
> octane fuel.
>
> "Quad Ring" OD operating shaft seals are available from AH Spares, 
> part 0VD185MS.  I haven't tried them yet, but it seems like they would 
> be an improvement over the single O rings generally used.
> OVD185MS

--------------wxXyRvQeL4fr9wIVBZ03A2kC
Content-Transfer-Encoding: 8bit

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body>
    Thanks for the input Craig. I'm still debating the flywheel;
    hopefully, my path will be apparent when I get the box out.<br>
    <br>
    I'll be checking the bell housing bolts, and the input shaft for
    wear. I already have the OD operating shaft 'quad rings,' I got them
    as soon as I saw Roger Moment's article (long story about the
    seller).<br>
    <br>
    Bob<br>
    <br>
    <div class="moz-cite-prefix">On 6/19/2024 1:54 PM, Craig Cooper
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CABWqUy=reVdkXcLZk0wWW5DPpb2x6Rtb691CamOdOMO1mE=[email-masked]">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">
        <div class="gmail_default" style="font-size:large">Re: 
          Lightened Flywheels</div>
        <div class="gmail_default" style="font-size:large"><br>
        </div>
        <div class="gmail_default" style="font-size:large">Hi Bob:  I
          absolutely love the extra power (perceived or actual) in my
          Healeys with light flywheels.  My BN1 has one from DW that
          weighs about 12 pounds and I'm using DW's damper on the
          front.  The car has an upgraded crankshaft and BN7 gearbox, so
          maybe that's kept it from flying apart.  My BN7 w/BJ8 cam has
          an alloy flywheel I got on eBay that I think weighs about 20
          pounds.  It runs smooth as silk with no ill effects.  I still
          can get occasional run-on though, with lower octane fuel. </div>
        <div class="gmail_default" style="font-size:large"><br>
        </div>
        <div class="gmail_default" style="font-size:large">On the
          gearbox oil leaks, check the lower bell housing bolts which,
          at least on the side shifts, extend into the gearbox and can
          leak.  Also, "Quad Ring" OD operating shaft seals are
          available from AH Spares, part 0VD185MS.  I haven't tried them
          yet, but it seems like they would be an improvement over the
          single O rings generally used.  </div>
        <div class="gmail_default" style="font-size:large"><span
style="color:rgb(46,46,46);font-family:Roboto,sans-serif;font-size:13.6px">OVD185MS</span></div>
      </div>
      <span style="white-space: pre-wrap">
</span></blockquote>
    <br>
  </body>
</html>

--------------wxXyRvQeL4fr9wIVBZ03A2kC--

--------------leGmqUjZFISnl0fOz1NssLfc
Content-Disposition: attachment; filename="ODSeal.JPG"
Content-Transfer-Encoding: base64

--------------leGmqUjZFISnl0fOz1NssLfc
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

[email-masked]

--------------leGmqUjZFISnl0fOz1NssLfc--

---

From: JSARCH via Healeys <[email-masked]>
Date: Thu, 20 Jun 2024 11:49:12 -0700

This is a multipart message in MIME format.

--===============7195823855204860559==
	boundary="----=_NextPart_000_0271_01DAC307.DF7A42D0"
Content-Language: en-us

This is a multipart message in MIME format.

------=_NextPart_000_0271_01DAC307.DF7A42D0
	charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Bob,

I installed a Denis Welch lightened flywheel in my 1962 BT7 back in =
2013. Overall, I like it but there is one small issue. If you stop on a =
steep incline, you may not be able to continue up the hill without =
backing down and getting a running start. That happened to me early on =
when I was driving around on some back roads in the Santa Cruz =
mountains. I never experienced that problem with the factory flywheel.

=20

John

=20

From: Healeys <[email-masked]> On Behalf Of Bob Spidell
Sent: Thursday, June 20, 2024 7:30 AM
To: [email-masked]
Subject: Re: [Healeys] Healeys Digest, Vol 17, Issue 98

=20

Thanks for the input Craig. I'm still debating the flywheel; hopefully, =
my path will be apparent when I get the box out.

I'll be checking the bell housing bolts, and the input shaft for wear. I =
already have the OD operating shaft 'quad rings,' I got them as soon as =
I saw Roger Moment's article (long story about the seller).

Bob

Re:  Lightened Flywheels

=20

Hi Bob:  I absolutely love the extra power (perceived or actual) in my =
Healeys with light flywheels.  My BN1 has one from DW that weighs about =
12 pounds and I'm using DW's damper on the front.  The car has an =
upgraded crankshaft and BN7 gearbox, so maybe that's kept it from flying =
apart.  My BN7 w/BJ8 cam has an alloy flywheel I got on eBay that I =
think weighs about 20 pounds.  It runs smooth as silk with no ill =
effects.  I still can get occasional run-on though, with lower octane =
fuel.=20

=20

On the gearbox oil leaks, check the lower bell housing bolts which, at =
least on the side shifts, extend into the gearbox and can leak.  Also, =
"Quad Ring" OD operating shaft seals are available from AH Spares, part =
0VD185MS.  I haven't tried them yet, but it seems like they would be an =
improvement over the single O rings generally used. =20

OVD185MS

=20

------=_NextPart_000_0271_01DAC307.DF7A42D0
	charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<html xmlns:v=3D"urn:schemas-microsoft-com:vml" =
xmlns:o=3D"urn:schemas-microsoft-com:office:office" =
xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" =
xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta =
http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta =
name=3DGenerator content=3D"Microsoft Word 15 (filtered =
medium)"><style><!--
/* Font Definitions */
@font-face
	{font-family:"Cambria Math";
	panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
	{font-family:Calibri;
	panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
	{font-family:Roboto;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
	{margin:0in;
	font-size:11.0pt;
	font-family:"Calibri",sans-serif;}
span.EmailStyle18
	{mso-style-type:personal-reply;
	font-family:"Calibri",sans-serif;
	color:windowtext;}
.MsoChpDefault
	{mso-style-type:export-only;
	font-size:10.0pt;
	mso-ligatures:none;}
@page WordSection1
	{size:8.5in 11.0in;
	margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
	{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US =
link=3D"#0563C1" vlink=3D"#954F72" style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal>Bob,<o:p></o:p></p><p =
class=3DMsoNormal>I installed a Denis Welch lightened flywheel in my =
1962 BT7 back in 2013. Overall, I like it but there is one small issue. =
If you stop on a steep incline, you may not be able to continue up the =
hill without backing down and getting a running start. That happened to =
me early on when I was driving around on some back roads in the Santa =
Cruz mountains. I never experienced that problem with the factory =
flywheel.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>John<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Healeys =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Bob =
Spidell<br><b>Sent:</b> Thursday, June 20, 2024 7:30 AM<br><b>To:</b> =
[email-masked]<br><b>Subject:</b> Re: [Healeys] Healeys Digest, =
Vol 17, Issue 98<o:p></o:p></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>Thanks for the input Craig. I'm still =
debating the flywheel; hopefully, my path will be apparent when I get =
the box out.<br><br>I'll be checking the bell housing bolts, and the =
input shaft for wear. I already have the OD operating shaft 'quad =
rings,' I got them as soon as I saw Roger Moment's article (long story =
about the seller).<br><br>Bob<o:p></o:p></p><div><p class=3DMsoNormal>On =
6/19/2024 1:54 PM, Craig Cooper wrote:<o:p></o:p></p></div><blockquote =
style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><div><p =
class=3DMsoNormal><span style=3D'font-size:18.0pt'>Re:&nbsp; Lightened =
Flywheels<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:18.0pt'><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:18.0pt'>Hi Bob:&nbsp; I =
absolutely love the extra power (perceived or actual) in my Healeys with =
light flywheels.&nbsp; My BN1 has one from DW that weighs about 12 =
pounds and I'm using DW's damper on the front.&nbsp; The car has an =
upgraded crankshaft and BN7 gearbox, so maybe that's kept it from flying =
apart.&nbsp; My BN7 w/BJ8 cam has an alloy flywheel I got on eBay that I =
think weighs about 20 pounds.&nbsp; It runs smooth as&nbsp;silk with no =
ill effects.&nbsp; I still can get occasional run-on though, with lower =
octane fuel.&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:18.0pt'><o:p>&nbsp;</o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:18.0pt'>On the gearbox oil =
leaks, check the lower bell housing bolts which, at least on the side =
shifts, extend into the gearbox and can leak.&nbsp; Also, &quot;Quad =
Ring&quot; OD operating shaft seals are available from AH Spares, part =
0VD185MS.&nbsp; I haven't tried them yet, but it seems like they would =
be an improvement over the single O rings generally =
used.&nbsp;&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:Roboto;color:#2E2E2E'>OVD185MS</spa=
n><span =
style=3D'font-size:18.0pt'><o:p></o:p></span></p></div></div></blockquote=
><p class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></body></html>
------=_NextPart_000_0271_01DAC307.DF7A42D0--

--===============7195823855204860559==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

[email-masked]

--===============7195823855204860559==--