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overbore gaskets
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Posted by: skyhighatv

does any company other than cometic make an overbore head gasket? im on a 69mm piston now and would like the thinner(much thinner) cr style gasket, any body know where i can get one?

Posted by: C-LEIGH RACING

I dont have my Cometic book here at the house to get a part number, but they have a gasket set with the .010 thick metal head gasket for a 68mm & then one for the 72mm big bore.

I have used the thin CR250R head gasket on the 270s, just re-sized the bore hole to the right bore size. Worked right well with some Three Bond 1211 sealant.
Neil

Posted by: fiveOnick

Cometic has one I have used it but its like $30 by the time you ship it. I paid about $70 to have two domes O-ringed and with 3 sets of rings. Thats the way to go in my opinion.

You can cut one out by hand if your handy with a hand cutting tool, if not you can screw it and and yourself up pretty fast. .010" gaskets are sharp.

Posted by: skyhighatv

what would be the best method for cutting down a cr gasket-i have a few around, maybe shears or a dremel?

Posted by: skyhighatv

just found a stainless .010 gasket set in 69.5mm-$36.00-from cometic ,its a whole top end kit.

Posted by: C-LEIGH RACING

quote:
Originally posted by skyhighatv
just found a stainless .010 gasket set in 69.5mm-$36.00-from cometic ,its a whole top end kit.

Thats one of the three I was talking about.
Cometic has a .010 thin gasket in the 68mm, 69.50mm, 72mm.
Neil