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I'm planning on reusing a set of cometic head gaskets. I sprayed them with copper gasket spray the first time around. Do I need to clean that off and what should I use?
Copper gasket spray is just fine for reuse. I would just clean the mating surfaces of the heads/block very well, respray the gaskets, and put them back on.
i reused one of mine but partly because i just took one head back off to change out a lifter.i put mine on without spraying them,no leaks so far (knock on wood)