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  1. #21
    I could send you mine, it's mangled with holes in it. You have a way to do an autopsy on them? It would be nice to know for preventative reasons.


  2. #22
    Quote Originally Posted by KU310R View Post
    Exactly same thing happened to me @ 98hrs on my 2016 310R... Piston number 4 had cracked between the rings

    Finally I can confirm that the rebuild cost for parts (300 pistons including new cylinder block)and labor has been taken up by Kawasaki and finally got the engine back in the ski and restarted it again today. Considering it has been 98hrs and 3 years since I purchased the ski, there isn't anything else I could have asked for.

    However rather then installing the original 300 pistons back in the motor, I have decided to purchase a set of forged Wossner pistons and rebuilt the new engine with them.

  3. #23

  4. #24
    Wolf714's Avatar
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    That is exactly what I would do as well if I had piston problems on an Ultra. We use the Wössner pistons on high-horsepower Turbo-Hayabusas a lot and they are great.

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