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drifting piston ring?

1545 Views 14 Replies 9 Participants Last post by  jbranson, 
M
What can cause a piston ring to drift off the key? A friend of mine has an old kawi 350 triple, and he's running suzuki pistons, with the barrels bored out to match. Not sure what size the pistons are. His bike developed a "ticking" nose last night with only 80 something miles on the new top end. We found the the right piston had drifted off the key. We put it all back together again making sure everything was were it should be. When we kicked it over the nose was gone. But as soon as we started the bike it came back right away. Any thoughts???
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What, JB, A photo of the piston with the ring gap tit in the ring groove?

It surprised the poop out of me the first time I found out about it too. It was unbelievable. i finish putting the pistons on the rods, put the barrels on, bolted the heads on, and BANG. the engine is DONE. No gears, cams, chains, valves, . . . COOL.
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I personally, would like to get the definitive word on whether or not 4 stroke rings move. I think they do.
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