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gtsmpuc

Piston ring rolled over

6 posts in this topic

What would cause a piston ring to roll over the edge? Could it only be done reassembling the cylinder or could it do it while running? Last pic is what looks like a heat mark on the left side of the cylinder, opposite of where the ring rolled over.

pistonring.jpg

cylinder1.jpg

cylinder2.jpg

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Reassembly error. Absent some really abnormal condition, it's impossible for that to occur once put together right.

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Those cylinders are tough to get on with the skirt cut so high I need two sets of eyes when I do it, with that said I think I have one brand new oil ring if your interested :thumbsup:

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Thanks for all the replies, i got the bike as is, not running and going through the motor. Everything seems fine, just maybe the previous owner put some stuff back together wrong.

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Thats what I call a "curly Q".....Try it on a R-1 sportbike when your doing 4 pistons at once with no ring compressor.:thumbsup:

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