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  1. #1
    PWCToday Newbie
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    Buying a Cylinders: What to Look Out For

    I've been told that I need to replace my cylinder on my ski because of some major exhaust port damage. If I'm looking at used cylinders online, what would be some major red flags that tell me I should stay away from a deal? Basically every cylinder I've seen has rust on the walls, so I'm guessing honing/boring whatever I buy is pretty much a given. Is there anything less obvious I should ask about?
    1987 JS550 - Torn down 100% for rebuild!
    1982 JS550 - In the process of tearing down.

    Looking for a couple JS550 copper head gaskets.

  2. #2
    I dream skis JC-SuperJet's Avatar
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    Re: Buying a Cylinders: What to Look Out For

    Verify current bore size to determine how many "bores" are left in the sleeve. If it's maxed-out, you will need to spend a lot more money to install new sleeves.

    Verify block casting id for correct match to your engine.

    Look for broken sleeve skirts, cracks anywhere in the block, damaged bolt/stud holes and threads, obvious signs of overheating, clogged cooling passages.

    Beware of "ported" cylinders because they may not perform with your engine set-up.

  3. #3
    PWCToday.com Is My Home Away From Home BLRider's Avatar
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    Re: Buying a Cylinders: What to Look Out For

    Ask for pics of any questionable areas, not everyone knows what they're talking about.
    Never argue with an idiot, they will drag you down to their level then beat you with experience.

  4. #4
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: Buying a Cylinders: What to Look Out For

    what kind of cylinder are we talking about, sometimes its easier to just replace the damaged sleeve unless it's a Kawi, Polaris or a Yamaha power valve engine then you get to replace the cylinder.
    Get your Fat Dudes T-shirts right here PM me for details !

  5. #5
    PWCToday Newbie
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    Re: Buying a Cylinders: What to Look Out For

    Quote Originally Posted by wfo speedracer View Post
    what kind of cylinder are we talking about, sometimes its easier to just replace the damaged sleeve unless it's a kawi, polaris or a yamaha power valve engine then you get to replace the cylinder.
    87 js550.
    1987 JS550 - Torn down 100% for rebuild!
    1982 JS550 - In the process of tearing down.

    Looking for a couple JS550 copper head gaskets.

  6. #6
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: Buying a Cylinders: What to Look Out For

    Yep that's a cylinder replacement
    Get your Fat Dudes T-shirts right here PM me for details !

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