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Cometic Head Gaskets

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Old 08-24-2002, 11:46 PM
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Default Cometic Head Gaskets

What thickness are these?How does everyone that runs them like them?
Old 08-24-2002, 11:49 PM
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Default Re: Cometic Head Gaskets

You can order them in many different bore sizes, thickness, etc. Their "stock" replacement gasket has a compressed thickness of .054. This is what I'll be using when I install my heads in the next few weeks, along with ARP head studs.

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Old 08-24-2002, 11:58 PM
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Default Re: Cometic Head Gaskets

I plan on installing some heads in 2 weeks.The heads have not been milled,so I'm looking for a thinner than stock gasket that will hold what I can throw at it <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I'm also installing ARP studs.
Old 08-25-2002, 09:18 AM
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Default Re: Cometic Head Gaskets

Don, because of positive deck clearance of pistons, you are restricted to around .050" thick gasket to maintain estimated .040" min. quench, to avoid interference of head and piston. I cant find my gasket specs but they must be around .050" or i would hear them hitting at 6600 rpms! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Old 08-25-2002, 09:56 AM
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Default Re: Cometic Head Gaskets

<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> I thought you said get thin Gaskets <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Old 08-25-2002, 10:02 AM
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Default Re: Cometic Head Gaskets

IMO a .035" quench is perfectly fine and should help to build a bit more power as you want to go as tight as possible without contact.
So you can IMO run a gasket of .041" or so with a .006 "+ piston.
In fact Fel-Pro ls1 gaskets are speced at .041" thick compressed <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> .
Steve
Old 08-25-2002, 10:55 AM
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Default Re: Cometic Head Gaskets

My Cometics are .043 thick and my heads are shaved .060. I do have flycuts in my pistons though. Without shaving the heads I see no reason you couldnt run a thinner gasket.
Old 08-25-2002, 05:32 PM
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Default Re: Cometic Head Gaskets

I love the cometic gaskets cause they are reuseable. I have used mine 3-4 times now. They are not marked so make sure you put the BIG water jacket holes towards the back of the block.




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