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  1. #1

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    98 spx ice damage

    I didn't get enough water out of my 787 before last winter and it cracked the outside of one of my cylinders and water is leaking out. I removed the bad cyl and got another from e-bay. I have about 25 hrs on a new top end on this ski and it's bored 1st over. The cyl that I got from ebay is on the stock bore. When I get the new cyl bored does anyone think that it would be bad to put it back together with the existing piston and rings? Thanks in advance guys!!!

    ~~~Piz


  2. #2
    Pwgsx's Avatar
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    At least replace the rings with new ones.....

  3. #3
    20 feet Boy's Avatar
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    You mean one cylinder will be stock and one will be first over. I don't think so.

  4. #4
    check your cylinder drain outlet, it's in the exhaust tip. It's usually clogged with sand of wasp nests.

  5. #5

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    No, They will both be 1st over once I get the new one bored. Thx

  6. #6

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    Thanks - Good idea to check.

  7. #7
    steach's Avatar
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    Quote Originally Posted by pizbrewin View Post
    Thanks - Good idea to check.
    It wouldn't help. a 787 will always hold too much water to survive freezing. you MUST add antifreeze in the highest point on the head (the fitting next to the temp censor).
    -at 100% (it will dilute to 50:50 when it finds trapped water). a cup(8oz) should doo.

  8. #8
    Quote Originally Posted by steach View Post
    It wouldn't help. a 787 will always hold too much water to survive freezing. you MUST add antifreeze in the highest point on the head (the fitting next to the temp censor).
    -at 100% (it will dilute to 50:50 when it finds trapped water). a cup(8oz) should doo.
    Should be done on any boat that will see below freezing temps..

  9. #9
    steach's Avatar
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    Quote Originally Posted by KYHI View Post
    Should be done on any boat that will see below freezing temps..
    The yamaha and Kawi two-strokes are self draining and don't require it... but, a splash of anti-frz wont hurt noth'n.

    A Doo 717 or 787 will absolutely pop if not treated (at a min. blown out w/air).

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