im trying to figure out what piston rings i need. im pretty sure im going with sealed power hellfire rings. i have a dart shp with a 4.125 bore and JE pistons. when i look up hellfire rings they come in 0.005, .035, and .065 oversizes. heres my question....what does the oversize relate to? is it the radial thickness? or is that .005 on the end of the ring?
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