Gentleman I need some help here. I have 2 rcmk evo engines and I'm at the point of setting the piston to head clearance. I have .013 with no sealer on the copper gasket. I would like to know how close is to close. I also using ceramic bearings.

Moderators I'm sorry but I thought I posted this in the engine section.

.015 to .025... not sure if ceramic bearings have an effect on it?...you may possibly go lower squish if running methenol.
I try set mine around .020 for normal unleaded gas at 16:1 oil.
Hope that helps ..or someone will correct me if wrong...lol

Thank you very much!!