I dont know anything about this other than to get the cylinders bored and I dont want to go that far but I have a small ring wear at the top of the cylinder. I am going through this engine trying to keep it home to the original car. It is a 66 Valiant. slant 6. replacing rings, rod and main bearings, and after I got down this far I am replacing the camshaft, lifters. My question is I am going back with the same pistons. Will that ridge at the top be ok. I cant see that the new rings will get into it OR what is your opinion about using a ridge reamer to cut that ridge out. I have read both pro and cons about this and have never done it. If used will I lose compression. If I dont will the new rings hit the ridge and cause a problem. let me know what you think.
