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  1. #1

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    I split the cases and there's weird coating on

    Its my first time removing a crank and I noticed a weird coating under the crankshaft
    , looks like silicone it's white in color and is chipping away. Anyone know what this is and if it's normally there or did someone rig up the ski. I also noticed some pitting inside the crankcase inner walls near the carb intakes.


  2. #2
    Yamaha artisan Cutlass's Avatar
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    Post a pic of what you're talking about

  3. #3

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    I'm using my iPhone and having issues loading pics. If u give me your email I'll send the pics over. Trying to buy another laptop soon.

  4. #4

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    Ok I saw a few oTher cases and mine must have been damaged or something. I'm guess they tried to put a coating on the cases to make the ski rideable. I'm so glad I pulled the motor apart. I can't believe any mechanic would do such bad work. Funny thing is the ski ran great lol. I have pics if anyone wants to see them

  5. #5
    Old Ski Insanity w/rpm500's Avatar
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    its possible it was ceramic or powder coated because it had pitting... this would work as race engines are now done internally to help windage oil return to the pan..the coating smoothing out the rougher cast surface...

  6. #6

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    That's what it looks like. I just sent the whole short block to Tim judge at Judge Motorsports to get redone and a little extra power
    Getting port work. True and weld the crank and going bigger bore. Whatever the judge tells me is best I'll do. Thanks for the replys. I can't wait to get the ski back together. Gonna be really nice. I got the whole engine bay looking mint!! Now im working on the outside. It's gonna look like new when I'm done

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