[Fot] Cometic TR3 head gasket

Stutzman stutzmans at comcast.net
Tue Aug 10 17:11:25 MDT 2010


Do any listers have actual experience using this head gasket?
Bruce
----- Original Message ----- 
From: "MadMarx" <tr4racing at googlemail.com>
To: "'Larry Young'" <cartravel at pobox.com>; "'FOT'" <fot at autox.team.net>
Sent: Tuesday, August 10, 2010 2:55 AM
Subject: Re: [Fot] Cometic TR3 head gasket


> Hi Larry,
>
> you are right you could order custom pistons for this gasket. But my 
> engine
> is done so far and also the custom pistons.
>
> Is the thickness of the gasket in "new" condition or "compressed" 
> condition?
> Maybe this information will tell us more?
>
> I use the available steel gaskets but they doesnt fit very well and I 
> have
> to grind out at some spots on the gasket.
> So I'm looking for better fitting stuff.
>
> Cheers
> Chris
>
> -----Urspr|ngliche Nachricht-----
> Von: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] Im
> Auftrag von Larry Young
> Gesendet: Dienstag, 10. August 2010 01:40
> An: FOT
> Betreff: Re: [Fot] Cometic TR3 head gasket
>
> This issue of head gasket thickness has puzzled me for some time.  I
> understand why this was such a big issue in the old days, because people
> used off the shelf pistons.  However, now if you're racing a TR3 or TR4
> and want 87mm forged pistons you probably have to order them custom made
> from someplace like Wiseco.  Why not order them with a greater
> compression height to make up for the thicker head gasket?  I believe
> 2.00 inches puts the top of the piston at the top of the liner.  If
> you're head gasket is 0.045, you could order a 2.10 compression height
> for an 0.035 clearance.  This is pushing the limit, so you'd have to be
> sure you've got all the correct dimensions.  Am I missing something?
> Larry Young
>> MadMarx wrote:
>>> Thank you Jim for the information.
>>>
>>> Quite thick as this thick gasket would need some further grinding of the
>>> head to achieve the compression ratio.
>>>
>>>
>>>
>>> Seems that I have to stay with the normal steel head gaskets.
>>>
>>>
>>>
>>> Cheers
>>>
>>> Chris
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