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<p>If you want one that is tolerant of imperfect block / head /
liner protrusion, <br>
</p>
<p>Cometic part numberH0793SP4059F has worked best for me.</p>
<p>Payen AE-330 composite used to be my go-to, but they changed
hands and I changed liners and that didn't work for me anymore.</p>
<p>This is an 0.059" thick, 91 mm bore gasket with round fire rings,
but you need 91 mm bore even if your liners are smaller than that
(mine are) due to the diameter of the hole in the head if you've
milled ANYTHING off of it and opened up the intake pocket. They
make a thinner gasket and a 88 mm one, but the 88mm fire ring
outer edge is inside the intake pocket on my head which has only
been milled, no additional intake pocket relief ground. Even at
91mm I have a little bit of the fire ring protruding into the
combustion chamber. I've not had it burn through - but the
longest it stays on the engine is maybe a dozen races.<br>
</p>
<p>If you have perfect block / head / liner protrusion, one of the
solid gaskets (either steel shim or one of Mordy's awesome copper
gaskets - gasketworks.com) will give you a bit more compression
and you can make sure none of it protrudes into the combustion
chamber. We tried various solid gaskets on Jack's engines and
always ended up blowing a head gasket and changing to a Payen
AE-330 at the track. We eventually just put the composite gasket
in to begin with and stopped having to do that. We got pretty
good at it though - I think we had it down to about 1.5 hours.</p>
<p>Regards, Tony Drews<br>
</p>
<div class="moz-cite-prefix">On 7/31/2020 4:27 PM, mleccese1--- via
Fot wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1441613553.10295780.1596230823398@mail.yahoo.com">
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<div style="color:black;font: 10pt arial;">
<div><font size="2">Phil, Dave,</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">I may have compromised my head gasket last
weekend at Lime Rock (Green TR4 #802), can you or someone
recommend one that is robust.</font></div>
<div><font size="2"><br>
</font></div>
<div><font size="2">Thank you</font></div>
<div><font size="2">Michael L<br>
</font></div>
</div>
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