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  1. #1

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    65u cylinder repair?

    The previous owner was rebuilding the engine in my 99 gp1200 when I bought it, and I discovered that he cracked the cylinder bore (not the sleeve, the bore itself) and it cracked down the side of the bore and barely a small hairline crack visible on the outside of the case. I'm assuming it's done for...or is it possible to weld it back without more damage occurring. The sleeve would have to come back out to do that. I'm guessing he didn't heat the case or freeze the sleeve before attempting to press it in. If it's done for and anyone has a good core cylinder case I have paypal ready too. Thanks for any advice!


  2. #2
    Post a pic

  3. #3

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    Not sure how to post a pic, I'm having to use my phone. Is there a way to do it from a phone? If not, I'll post up tomorrow when I get to a computer. Thanks y'all

  4. #4
    Myself's Avatar
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    You sure it's not a freeze crack from not winterizing? I don't know how the aluminum cylinder casting itself could crack like that.

  5. #5
    Adam's Avatar
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    Wiseco make replacement sleeves , if its cracked it will be cheaper to put a new sleeve in.

  6. #6

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    Quote Originally Posted by Myself View Post
    You sure it's not a freeze crack from not winterizing? I don't know how the aluminum cylinder casting itself could crack like that.
    Apparently the guy didn't heat the cylinder up or freeze the sleeves and it cracked the cylinder assembly itself.
    Quote Originally Posted by Adam View Post
    Wiseco make replacement sleeves , if its cracked it will be cheaper to put a new sleeve in.
    Not the sleeve, it's the aluminum bore itself...the case.

  7. #7
    Myself's Avatar
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    Sounds like your cylinders are fubar'd. Put it on the grill and cook it at 350* for about 35minutes and pop out the sleeves. Save whatever is good and haul the aluminum in for scrap. I think I have a set with 2 good bores and one that needs a sleeve. Do you want me to look?

  8. #8

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    I'm gonna hold off on rebuilding mine right now, may have located a complete motor I might be getting. I'll def pm you if that falls through though. Thanks!

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