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Hi, I am overhauling my engine and i have found this damage to the No 2 piston. I can find no damage to the Barrel or to the cylinder head and none of the other pistons show damage. i've cleaned it and fitted it temp but I'm going to replace it unless anyone can tell me this is normal?
IMG_0985.jpg (You do not have access to download this file.)
  • Re: Piston Damage

    by » 6 years ago


    It looks like a mild case of Pre-Ignition Detonation damage.
    Have a look at ...
    https://www.rotax-owner.com/en/videos-topmenu/elearning-videos/201-detonation119

    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Clicking the "Thank You" is Always Appreciated by Everyone.


    Thank you said by: Rotax-Owner

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