Re: Lapping the head to repair a head gasket
Yeah I did that when I was rebuilding my engine, pushed first ring in groove and pushed piston in cylinder, lead angle makes it possible, then second ring, then third. And then the same for second cylinder, watching carefully not to pull the first one out. It is a delicate job, but can be done, carefully.
Ring compressor, even DIY version, makes it A LOT easier.
So no need for new piston rings, see that one is an eye opener for me, cause I was allways like "why?".
I understand if you pull out pistons, and the rings are a bit worn, that they will not be as good when you put them back in as they were before removal. So you must change them. But you would have to change them anyway in 10-20k, and they are not such a great expense. If they are good on removal, why not? I changed mine some three years and 15k ago, if had to do lapping of head now, why I could not "reuse" piston rings, I mean, how bad can they be?