Quote: Cometics require a pretty precise finish on the decks or they can leak.
Kevin
The last set I ran was in 2006. I had the heads lightly surfaced and cleaned the block with a red Scotch Brite. I had no leaks then. Other than the Cometics, I've only used Fel Pro blue gaskets. They leave no chunky residue after removal. I asked my machinist today. He said the decks need to be clean but not mirror/glass smooth. He felt here should be some degree of "grit" to the surface.
