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Re: [Healeys] Healey 100-4 timing

To: Wayne Schultz <waschu2@gmail.com>
Subject: Re: [Healeys] Healey 100-4 timing
From: Michael Oritt <michael.oritt@gmail.com>
Date: Fri, 2 Nov 2018 20:21:04 -0400
Cc: Austin Healey <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <CAKjtSfjGWT7BW9AeK8RTiq8kn9xjL4p958SNVdvRHOU8WCQeNA@mail.gmail.com>
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Wayne--

Exactly right--it is total advance that matters and I arrived at that
number by gradually increasing advance and seeing the effect upon water
temperature at speed and under full load.  Anything more and the car would
begin to overheat.  A bit too much less advance and performance fell off.

BTW I am running a DW "fast street" cam and tubular header and a Mallory
non-vacuum advance distributor fired with their Unilite module.  I too have
a Smitty's five-speed and the Toyota box, 180 XAS's and 3.54 diff set give
me about 72-73 mph at 3K rpm's indicated

Best--Michael Oritt

On Fri, Nov 2, 2018 at 6:03 PM Wayne Schultz <waschu2@gmail.com> wrote:

> Thanks to Michael and others I am going to stick with 34 - 35 degrees
> total advance for now. What, I think this means, is that the advance at
> idle is secondary and not as important as total advance. Cruising with th=
e
> the Toyota five speed or the original overdrive on the highway is right i=
n
> the 3K RPM range so I think this the perfect RPM to limit total advance. =
I
> might make a run to my local airport and buy some 100LL fuel. I have work=
ed
> in aviation since 1967 so I have a few friends=F0=9F=98=83
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff">Wayne=
--</div><div class=3D"gmail_default" style=3D"color:#3333ff"><br></div><div=
 class=3D"gmail_default" style=3D"color:#3333ff">Exactly right--it is total=
 advance that matters and I arrived at that number by gradually increasing =
advance and seeing the effect upon water temperature at speed and under ful=
l load.=C2=A0 Anything more and the car would begin to overheat.=C2=A0 A bi=
t too much less advance and performance fell off.=C2=A0=C2=A0</div><div cla=
ss=3D"gmail_default" style=3D"color:#3333ff"><br></div><div class=3D"gmail_=
default" style=3D"color:#3333ff">BTW I am running a DW &quot;fast street&qu=
ot; cam and tubular header and a Mallory non-vacuum advance distributor fir=
ed with their Unilite module.=C2=A0 I too have a Smitty&#39;s five-speed an=
d the Toyota box, 180 XAS&#39;s and 3.54 diff set give me about 72-73 mph a=
t 3K rpm&#39;s indicated</div><div class=3D"gmail_default" style=3D"color:#=
3333ff"><br></div><div class=3D"gmail_default" style=3D"color:#3333ff">Best=
--Michael Oritt</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr">=
On Fri, Nov 2, 2018 at 6:03 PM Wayne Schultz &lt;<a href=3D"mailto:waschu2@=
gmail.com">waschu2@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex"><div dir=3D"ltr">Thanks to Michael and others I am going to stick =
with 34 - 35 degrees total advance for now. What, I think this means, is th=
at the advance at idle is secondary and not as important as total advance. =
Cruising with the the Toyota five speed or the original overdrive on the hi=
ghway is right in the 3K RPM range so I think this the perfect RPM to limit=
 total advance. I might make a run to my local airport and buy some 100LL f=
uel. I have worked in aviation since 1967 so I have a few friends=F0=9F=98=
=83=C2=A0<div><br></div></div>
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