I'd like to get some input from the mahinists here on plasma moly rings in hopes of proving fact or disspelling rumor. Some guys seem to think that plasma moly rings have seating problems and take quite a few hours to seat, and claim that they'll never use moly rings in a performance engine because they've had nothing but problems getting them to seat. However I've heard from several builders that they should fully seat within the first heat cycle.
A couple machinists I know have said that it all has to do with the cylinder wall finish. I do know that different rings require different honing stones. If I remember correctly I believe since plasma moly is a much harder material that they require a very fine honing stone on the final hone to seat properly whereas chrome or cast iron rings need a courser one?
Also...is there a "proper break-in procedure" for seating rings in a performance engine?
Let's hear it from the machinists here.