GM or Cometic Head Gasket
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Joined: Jul 2003
Posts: 155
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From: Top Secret
i gust order my cometic .74 thick to lower my CR because i am using the sts turbo.but what i need to know is do i have to make O-ring on the block or the heads if i am using this Gasket.
thanks for help,
thanks for help,
Originally Posted by FireHawk22
i gust order my cometic .74 thick to lower my CR because i am using the sts turbo.but what i need to know is do i have to make O-ring on the block or the heads if i am using this Gasket.
thanks for help,
thanks for help,
is it an O-ring gasket? if so then yes you have to O-ring the block and head....if not then no....
now every gasket I have ordered from Cometic has been a non O-ring gasket (the Darton sleeve MIL gasket isn't an O-ring....I know that much)...
Originally Posted by FireHawk22
what about if i didnt make o-ring in tne blouc or the heads what could hapend.
thanks,
thanks,
the head will not clamp down right on the block.....
at min, you will have WAY more than "0.074" gasket"
worst case the gasket will not seal at all.....
Originally Posted by 2001CamaroGuy
is it an O-ring gasket? if so then yes you have to O-ring the block and head....if not then no....
now every gasket I have ordered from Cometic has been a non O-ring gasket (the Darton sleeve MIL gasket isn't an O-ring....I know that much)...
now every gasket I have ordered from Cometic has been a non O-ring gasket (the Darton sleeve MIL gasket isn't an O-ring....I know that much)...
Never heard of an oringed head gasket. If you wanted to ring it you just machine the head or the block and add some wire. Most people don't oring these blocks and they don't have problems on high boost turbo set ups. You will be fine with just the gasket. How come you didn't just flycut the pistons and keep the quench tighter. With that thick of a gasket you are going to be more prone to detonation.
Originally Posted by LASTLS1
I just ordered the MIL darton gasket from cometic. I was using regular cometic gaskets, I got a little water in the cylinder. I hope this solves the problem. I never knew there was a special gasket to use for the dartons!
I almost made that mistake......when I ordered my new gasket I didn't think to tell the guy I was putting the gasket on a Darton block......good thing he thought to ask "hey, what kind of block do you have?"
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Verdad Gallardo You can use some copper wire to make the oring if you have done the head machining to make it work. It is not necessary though. Just use your cometics and forget about the orings.
