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Anyone use the M9190-130 MaxSeal gapless top ring set?


IIRC that's what I ran in the last build of my 452. I'm not sure whether I could quantify any improvements over a more conventional ring package w/o an exacting back-to-back test, although I like them in theory.

However, this time I went back to a conventional top ring, switched to a Napier 2nd, and lowered the oil tension from 23# to 18#. Since the engine isn't running, yet, all I can say is this "should" provide decent oil control while offering some reduction in friction compared to the previous ring pack.