I'm in the process of tearing down and cleaning and rebuilding a Ryobi 31cc gas engine.
I was wondering what I should use to clean the parts.
I'm thinking about polishing the crankcase with rubbing compound and painting the cylinder head.
Is there something that I shouldn't use to clean it?
I don't want to use something that might react with the aluminum and cause a structure failure.
What kind of paint can I use to paint the cylinder head?
Will any high temp engine paint work?
Will painting the cylinder head cause the engine to run noticeably hotter?
Sorry for so many questions.
I just don't want to ruin my engine.

thanks
dc