Piston ring rolled over

5 replies to this topic
  • gtsmpuc

Posted April 15, 2011 - 02:17 PM


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.

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  • grayracer513

Posted April 15, 2011 - 02:51 PM


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

  • jasen 2007

Posted April 15, 2011 - 03:57 PM


Wow, I bet the cylinder was kind of hard to slide down... That sucks!!!

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  • 695

Posted April 15, 2011 - 06:02 PM


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:

  • gtsmpuc

Posted April 15, 2011 - 08:43 PM


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.

  • todds924

Posted April 19, 2011 - 09:21 PM


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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