[Christ]

Originally Posted by Gasoline Fumes

It's worth a shot, but I don't think it will be easy to accurately remove 0.6mm from each side of the ring by hand. I wouldn't try for the angle, just a straight step. And you probably wouldn't want chrome-plated rings like the OE Zuk/Metro top rings.

I'm getting more and more tempted to reuse my old XFi compression rings with new oil rings. The gaps meet the standards for reusing in the service manual.

Then there's no reason to not reuse them.

I was thinking that he could put the ring in the bore, allowing each end to overlap the other, then mark the overlap with a skerple (sharpie), remove the ring from the bore again, and then flat-file the ring on one side from the top down, and on the other side from the bottom up, so that you end up with (instead of an angle) a lap joint when the gap is closed. I wouldn't try for anything over a 76mm ring, though, because you'll probably end up with side clearance issues.