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87 pw80 piston rings

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Anybody know if there is a difference in the two rings? If it matters which one goes on top or bottom? I don't have a manual and can't find anything online specific.. Both rings look identical. Both are cut the same on the ends neither one is chamfered or beveled that I can

see, and they seem to be the same height and width.. Again no manual, no micrometer.. The only difference in them

is that one is mostly silver, the other one is mostly black..

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Typically the black ring goes on the bottom, however, the PW80 doesn't care. Also, I'm pretty sure I read on one of the piston spec sheets for the PW80 that it doesn't matter which way the piston rings go on. But again, typically, if there's writing on the wring, it faces up. (or in the case of the PW80 forward).

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