Something's gone terribly wrong... (hole in piston) - Page 2 - KawiForums - Kawasaki Motorcycle Forums
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post #11 of 11 (permalink) Old 11-16-2012, 08:26 AM
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Join Date: Nov 2012
Posts: 11
 
I had the same problem with a 94 ZX7. Valve floated, then bent, then broke, then punched a hole in the piston. Bike had low miles and engine had never been messed with. I was doing some drag racing with it and was told that the engine design of the early ZX's caused oil starvation in the #2 cylinder on hard accelerations and during wheelies. You probably had a timing issue but this could be a contributing factor.
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