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hazey123

Piston Ring Identification

9 posts in this topic

Replacing my piston (1st time) and was assembling the new rings last night. I got through the oil rings and up to the two compression rings and realized I don't know which goes where? WHich is the top and which is the bottom piston ring? One is darker in color than the other and one has a chamfer on the top inside edge (ID). I'm thinking the chamfer on the ID means something but not sure what? Please help so I can get this beast back together.

THanks

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Most ring packs include some help text with what goes where...Are these OE rings or aftermarket ? Aftermarket vendors should have technical reps to help you.

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It is a PRO X piston kit. THey are supposed to be very similar to OEM. I didn't see any text with my kit at all.

Also, in case I forgot, one ring is black while the other is light in color.

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It is a PRO X piston kit. THey are supposed to be very similar to OEM. I didn't see any text with my kit at all.

Also, in case I forgot, one ring is black while the other is light in color.

I seem to remember the rings (and the slots in the piston) being of two different thicknesses, so you couldn't put the wrong ring in the wrong slot - no?

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mine's apart right now, I think it's got the dark ring up top but I'll check tonite, post news tomorrow, I got OEM rings though.

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SXP, you are absolutely right. I didn't even check that and I happen to get the assembly right when I put them together. They are too different sizes so the thicker top ring cannot go into the lower groove. The top ring also happens to be the lighter color ring.

Matt4x4, let me know what you see. I am curious if your black ring is also the lower of the two compression rings.

Thanks guys.

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One more point. The rings typically have a mark of some sort, The mark usually goes up (facing the piston crown).

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