RE: Break-in a rebuilt engine?
Pile:
You're right. I didn't even think about plated bores in my earlier post.
A plated bore MAY be cleaned, a plated bore MAY NOT be sanded, honed, or ground by any method if it is expected to live beyond the initial starting of the engine. The safest thing is to use a solvent, and not even toothpaste on it.
Bill.