Re using cast iron rings?

Based on the replies, I'm going to share where I got this idea. I might have got the wrong impression or maybe that is what he meant.

I was personally taught in auto school to replace rings, nobody never even suggested such a thing except this video. my engine hardly has any ridge and ran before taken apart but is an original 74 engine that was taken apart for other issues and is intended to be overhauled stock.

18:00, 19:00




Didn't one of his builds blow up on the dyno test before??? :rolleyes: