Sanding sleeves work awesome for dings and pits. I left the last one on a running car for two weeks. Length I guess would depend on how bad the piston is, use of elevator, and desired outcome. If left on too long it could take the overall diameter down too far I imagine. We didnt use calipers on it before, or after to tell if we had made that sort of change. Only thing i was unhappy with were the chains used for tieing it back to the head. Little air cord and crosbies fixed that issue.
Last edited by Silly; 07/28/14 08:58 AM.