Hello!
I just bought a set of rings for a slant six engine, very cheap, because the seller didn´t know what size (std/.30/60 etc) they are. How do I measure them correctly? Do I have to squeeze them so the ring ends touch each other then take a o.d. measurement?
Thanks!
Chris

Your measurement will get you close but it is best to try the rings in a bore. this will help you find the "file to fit" sets that are over common bore sizes.
Trouble is that most people don't have all the different bore sizes available.
DD

Thanks for the reply; I will check them as soon as i get them; the rings are mopar performance, maybe I can find some pn the seller overlooked.
Chris