Heads off. #1 has a white ashy residue, not sure why its only in #1. Head gaskets looked ok, no leaks.
The cylinders have some powdery surface rust, it wipes off mostly with a rag and lacquer thinner. The tops of the bores are smooth and flat but have have a sharp lip where the top ring stops. Is that a ridge? I seem to remember ridges having more of a hill shape.
Do I need to hone and use new rings, or can I get by with just a hone? Or will it be fine the way it is?
