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Metal-on-Metal makes the most sense but you need a lathe and a steady hand. T=
he reason Metal-on-Metal is best is because your distributor ground is throu=
gh the pedestal. If you use a gasket or rtv the ground contact us reduced. T=
he studs and nuts don=E2=80=99t always do the job. I install a separate grou=
nd wire. Note that ground is just as important for the Pertronix style syste=
m as it is for points.
Sent from my iPhone
> On Mar 19, 2019, at 9:54 AM, fubog1 via Fot <fot@autox.team.net> wrote:
>=20
> If we're talking (typing) about the oil pump/distributor drive gear end fl=
oat being excessive, agreed, no shim, something is worn, identify the proble=
m and correct it.
> Obviously the gasket thickness is a big part of the equation.
> Wear would most likely be obvious on the top face of the bush or the thrus=
t face on the bottom of the pedestal.
> When I set these up I usually trim a little off of the bottom of the pedes=
tal mounting flange to get the correct end float and bolt it up metal-onmeta=
l, no gasket.
> HTH
> Glen
>=20
>=20
>=20
> -----Original Message-----
> From: Robert Lang via Fot <fot@autox.team.net>
> To: fot <fot@autox.team.net>; timmmurphh <timmmurphh@gmail.com>
> Sent: Tue, Mar 19, 2019 9:22 am
> Subject: Re: [Fot] Too much clearance on distributor drive gear
>=20
> Hi - if the bushing is worn, it needs to be replaced. I would not run the g=
ear with a thin shim under it, the shim will not last. I just looked at Moss=
and they have that distributor bushing listed for $75 plus or minus.
>=20
> If you have slop with that distributor drive, you will never get the ignit=
ion timing to be rock solid.
>=20
> Regards,
> Bob Lang
>=20
> On Tuesday, March 19, 2019, 12:36:30 AM EDT, timmmurphh--- via Fot <fot@au=
tox.team.net> wrote:
>=20
>=20
> On page 1.130 and 1.131 of the Workshop Manual it describes the procedure f=
or obtaining the correct clearance or float for the distributor gear driven b=
y the camshaft. It gives two scenarios: one where there is interference of t=
he gear and the bushing; and a second where there is not enough clearance or=
float. What it doesn=E2=80=99t consider is if there is too much clearance b=
etween the gear and the bushing. That is the case on my TR4 engine. I had 0=
.016 clearance and added a 0.010 shim under the gear to get the desired 0.00=
6 clearance. Has anybody else had this experience? And what did you do abo=
ut it.
> =20
> Tim Murphy
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/robertlangtr=
6@yahoo.com
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/fubog1@aol.c=
om
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vfracing@aol=
.com
>=20
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Metal-on-Metal makes the most sense but you=
need a lathe and a steady hand. The reason Metal-on-Metal is best is becaus=
e your distributor ground is through the pedestal. If you use a gasket or rt=
v the ground contact us reduced. The studs and nuts don=E2=80=99t always do t=
he job. I install a separate ground wire. Note that ground is just as import=
ant for the Pertronix style system as it is for points.<br><br><div id=3D"Ap=
pleMailSignature" dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br>=
On Mar 19, 2019, at 9:54 AM, fubog1 via Fot <<a href=3D"mailto:fot@autox.=
team.net">fot@autox.team.net</a>> wrote:<br><br></div><blockquote type=3D=
"cite"><div dir=3D"ltr"><font color=3D"black" size=3D"2" face=3D"Arial, Helv=
etica, sans-serif">
<div> <font size=3D"2">If we're talking (typing) about the oil pump/distribu=
tor drive gear end float being excessive, agreed, no shim, something is worn=
, identify the problem and correct it.</font></div>
<div><font size=3D"2">Obviously the gasket thickness is a big part of the eq=
uation.</font></div>
<div><font size=3D"2">Wear would most likely be obvious on the top face of t=
he bush or the thrust face on the bottom of the pedestal.</font></div>
<div><font size=3D"2">When I set these up I usually trim a little off of the=
bottom of the pedestal mounting flange to get the correct end float and bol=
t it up metal-onmetal, no gasket.</font></div>
<div><font size=3D"2">HTH</font></div>
<div><font size=3D"2">Glen<br>
</font></div>
<div><font size=3D"2"></font><br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black">-----O=
riginal Message-----<br>
From: Robert Lang via Fot <<a href=3D"mailto:fot@autox.team.net";>fot@auto=
x.team.net</a>><br>
To: fot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>>=
; timmmurphh <<a href=3D"mailto:timmmurphh@gmail.com";>timmmurphh@gmail.co=
m</a>><br>
Sent: Tue, Mar 19, 2019 9:22 am<br>
Subject: Re: [Fot] Too much clearance on distributor drive gear<br>
<br>
<div id=3D"yiv7706464624">
<div>
<div class=3D"yiv7706464624ydp458ed572yahoo-style-wrap" style=3D"font-family=
:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;">
<div></div>
=20
<div>Hi - if the bushing is worn, it needs to be replaced. I would not run t=
he gear with a thin shim under it, the shim will not last. I just looked at M=
oss and they have that distributor bushing listed for $75 plus or minus.</di=
v>
<div><br clear=3D"none"></div>
<div>If you have slop with that distributor drive, you will never get the ig=
nition timing to be rock solid.</div>
<div><br clear=3D"none"></div>
<div>Regards,</div>
<div>Bob Lang<br clear=3D"none"></div>
<div><br clear=3D"none"></div>
=20
</div>
<div class=3D"yiv7706464624yahoo_quoted" id=3D"yiv7706464624yahoo_quoted_380=
5613488">
=20
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;fon=
t-size:13px;color:#26282a;">
=20
=20
<div class=3D"yiv7706464624yqt5784265216" id=3D"yiv7706464624yqt96128">
<div>
On Tuesday, March 19, 2019, 12:36:30 AM EDT, timmmurphh-=
-- via Fot <<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>&=
gt; wrote:
</div>
=20
<div><br clear=3D"none"></div>
=20
<div><br clear=3D"none"></div>
=20
<div>
<div id=3D"yiv7706464624"><style>#yiv7706464624 #yiv7706464624 -- filter=
ed {panose-1:2 4 5 3 5 4 6 3 2 4;} #yiv7706464624 filtered {font-family:Ca=
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MsoHyperlink {color:#0563C1;text-decoration:underline;} #yiv7706464624 a:v=
isited, #yiv7706464624 span.yiv7706464624MsoHyperlinkFollowed {color:#954F7=
2;text-decoration:underline;} #yiv7706464624 span.yiv7706464624EmailStyle17=
{font-family:sans-serif;color:windowtext;} #yiv7706464624 .yiv7706464624M=
soChpDefault {font-family:sans-serif;} #yiv7706464624 filtered {margin:1.0=
in 1.0in 1.0in 1.0in;} #yiv7706464624 div.yiv7706464624WordSection1 {} #yi=
v7706464624 </style>
<div>
<div class=3D"yiv7706464624WordSection1">
<div class=3D"yiv7706464624MsoNormal">On page 1.130 and 1.131 of the Worksho=
p Manual it describes the procedure for obtaining the correct clearance or f=
loat for the distributor gear driven by the camshaft. It gives two sce=
narios: one where there is interference of the gear and the bushing; and a s=
econd where there is not enough clearance or float. What it doesn=E2=80=
=99t consider is if there is too much clearance between the gear and the bus=
hing. That is the case on my TR4 engine. I had 0.016 clearance a=
nd added a 0.010 shim under the gear to get the desired 0.006 clearance.&nbs=
p; Has anybody else had this experience? And what did you do about it.=
</div>
<div class=3D"yiv7706464624MsoNormal"> </div>
<div class=3D"yiv7706464624MsoNormal">Tim Murphy</div>
</div>
</div>
</div>
_______________________________________________<br clear=3D"none"><a rel=3D"=
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</div>
</div>
<div class=3D"yqt5784265216" id=3D"yqt70319">_______________________________=
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