cylinder gaskets

[motorracer]

Hi i am getting ready to put 91 turbo cyl. on a 87 cases the 91 has o ring gasket an the 87 had copper which one should i use or both thanks

[David]

I'm guessing O-ring only, but here's a bump to the top for someone more knowledgable to see.

Either way, I'd put it together with o-ring only to measure squish which is of primary importance.