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I'm not sure about that spec, .005-.007 proud is for stock gaskets, I use =
.002-.003 for the steel shim gasket, which is all that I use on the race en=
gines.Any more than .003 & the head won't clamp down good around the oil & =
water passages, at least that's been my experience.Merry Christmas!!!
Glen Efinger
On Monday, December 23, 2024 at 08:02:36 AM EST, Philip Gott via Fot <f=
ot@autox.team.net> wrote: =20
Merry Christmas!
The composite gasket can not be cut back.
The steel shim gasket can -and must be cut back as you describe.=C2=A0 Best=
to err on the side of taking too much off rather then not enough. We have =
had good luck using (and re-using) these with Hylomar.=C2=A0 The cylinder l=
iners should protrude above the block .005 to .007 or the seal will be =E2=
=80=9Ciffy.=E2=80=9D
Phil Gott
Sent from my iPhone
> On Dec 22, 2024, at 11:30=E2=80=AFPM, Greg Blake via Fot <fot@autox.team.=
net> wrote:
>=20
> =EF=BB=BFSo I=E2=80=99m building my first 89mm motor. Before you flame me=
, it=E2=80=99s a hot street motor.
>=20
> The head has been skimmed enough to remove the intake shroud. I have a Lu=
cas brand big bore head gasket. It is a composite gasket with a steel fire =
ring. That fire ring hangs into the combustion chamber all around the intak=
e valve. I don=E2=80=99t know if that Lucas gasket can be trimmed or otherw=
ise modified to be able to work with this combination. So that=E2=80=99s qu=
estion one.
>=20
> I also have a bunch of old stock steel shim head gaskets. The pictures be=
low are of that gasket sitting on the head on the work bench. You can see i=
t hangs into the combustion chamber as well but only about 0.010=E2=80=9D. =
It=E2=80=99s the piece of metal that is inside of the fire ring. It looks l=
ike I could easily trim that with a flap wheel and have no part of the gask=
et in the combustion chamber. So that=E2=80=99s question number two. Is tha=
t the remedy for the shim steel gasket.
>=20
> Last question. I=E2=80=99ve never used a shim steel. Do I still go for 3-=
5 thou protrusion and then coat with copper coat?
>=20
> Thanks folks and merry Christmas =F0=9F=8E=81
>=20
> <image0.jpeg>
> <image1.jpeg>
> <image2.jpeg>
>=20
>=20
>=20
> Sent from my iPhone_______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/vfracing@ao=
l.com
>=20
>=20
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
m
=20
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<html><head></head><body><div class=3D"ydpac34b03cyahoo-style-wrap" style=
=3D"font-family:Arial, Helvetica, sans-serif;font-size:16px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">I'm not sure about that spec=
, .005-.007 proud is for stock gaskets, I use .002-.003 for the steel shim =
gasket, which is all that I use on the race engines.</div><div dir=3D"ltr" =
data-setdir=3D"false">Any more than .003 & the head won't clamp down go=
od around the oil & water passages, at least that's been my experience.=
</div><div dir=3D"ltr" data-setdir=3D"false">Merry Christmas!!!</div><div d=
ir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"=
false">Glen Efinger<br></div><div><br></div>
=20
</div><div id=3D"ydp9943144eyahoo_quoted_5289737311" class=3D"ydp99=
43144eyahoo_quoted"><div class=3D"ydp9943144eyahoo-style-wrap" style=3D"fon=
t-family:Arial, Helvetica, sans-serif;font-size:16px;">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div class=3D"ydp9943144equoted-text-header">
On Monday, December 23, 2024 at 08:02:36 AM EST, Ph=
ilip Gott via Fot <fot@autox.team.net> wrote:
</div>
</div><div style=3D"font-family:'Helvetica Neue', Helvetica=
, Arial, sans-serif;font-size:13px;color:#26282a;border-left: 1px solid #cc=
c;padding-left: 8px;margin: 0px 0px 0px 8px" class=3D"ydp9943144einline_rep=
ly_quote_container" data-split-quote-node=3D"true">
<div><br></div><div><br></div>
<div><div dir=3D"ltr">Merry Christmas!<br clear=3D"none">Th=
e composite gasket can not be cut back.<br clear=3D"none">The steel shim ga=
sket can -and must be cut back as you describe. Best to err on the si=
de of taking too much off rather then not enough. We have had good luck usi=
ng (and re-using) these with Hylomar. The cylinder liners should prot=
rude above the block .005 to .007 or the seal will be =E2=80=9Ciffy.=E2=80=
=9D<br clear=3D"none">Phil Gott<br clear=3D"none"><br clear=3D"none">Sent f=
rom my iPhone<br clear=3D"none"><br clear=3D"none">> On Dec 22, 2024, at=
11:30=E2=80=AFPM, Greg Blake via Fot <<a shape=3D"rect" href=3D"mailto:=
fot@autox.team.net" rel=3D"nofollow" target=3D"_blank">fot@autox.team.net</=
a>> wrote:<br clear=3D"none">> <br clear=3D"none">> =EF=BB=BFSo I=
=E2=80=99m building my first 89mm motor. Before you flame me, it=E2=80=99s =
a hot street motor.<br clear=3D"none">> <br clear=3D"none">> The head=
has been skimmed enough to remove the intake shroud. I have a Lucas brand =
big bore head gasket. It is a composite gasket with a steel fire ring. That=
fire ring hangs into the combustion chamber all around the intake valve. I=
don=E2=80=99t know if that Lucas gasket can be trimmed or otherwise modifi=
ed to be able to work with this combination. So that=E2=80=99s question one=
.<br clear=3D"none">> <br clear=3D"none">> I also have a bunch of old=
stock steel shim head gaskets. The pictures below are of that gasket sitti=
ng on the head on the work bench. You can see it hangs into the combustion =
chamber as well but only about 0.010=E2=80=9D. It=E2=80=99s the piece of me=
tal that is inside of the fire ring. It looks like I could easily trim that=
with a flap wheel and have no part of the gasket in the combustion chamber=
. So that=E2=80=99s question number two. Is that the remedy for the shim st=
eel gasket.<br clear=3D"none">> <br clear=3D"none">> Last question. I=
=E2=80=99ve never used a shim steel. Do I still go for 3-5 thou protrusion =
and then coat with copper coat?<br clear=3D"none">> <br clear=3D"none">&=
gt; Thanks folks and merry Christmas =F0=9F=8E=81<br clear=3D"none">> <b=
r clear=3D"none">> <image0.jpeg><br clear=3D"none">> <image1=
.jpeg><br clear=3D"none">> <image2.jpeg><br clear=3D"none">>=
<br clear=3D"none">> <br clear=3D"none">> <br clear=3D"none">> Se=
nt from my iPhone_______________________________________________<br clear=
=3D"none">> <a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; rel=3D"=
nofollow" target=3D"_blank">fot@autox.team.net</a><br clear=3D"none">> <=
br clear=3D"none">> <a shape=3D"rect" href=3D"http://www.fot-racing.com"=
rel=3D"nofollow" target=3D"_blank">http://www.fot-racing.com</a><br clear=
=3D"none">> <br clear=3D"none">> Donate: <a shape=3D"rect" href=3D"ht=
tp://www.team.net/donate.html" rel=3D"nofollow" target=3D"_blank">http://ww=
w.team.net/donate.html</a><br clear=3D"none">> Archive: <a shape=3D"rect=
" href=3D"http://autox.team.net/archive"; rel=3D"nofollow" target=3D"_blank"=
>http://autox.team.net/archive</a> <a shape=3D"rect" href=3D"http://www.tea=
m.net/pipermail/fot" rel=3D"nofollow" target=3D"_blank">http://www.team.net=
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ect" href=3D"http://autox.team.net/mailman/options/fot/vfracing@aol.com"; re=
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vfracing@aol.com</a><div class=3D"ydp9943144eyqt0172147916" id=3D"ydp994314=
4eyqtfd36684"><br clear=3D"none">> <br clear=3D"none">> <br clear=3D"=
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clear=3D"none"><a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; rel=3D=
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lear=3D"none"><a shape=3D"rect" href=3D"http://www.fot-racing.com"; rel=3D"n=
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_______________________________________________
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http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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