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  1. #1
    Hayabusa's Avatar
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    Pistons for Pro 1200

    Anyone else out there running pistons in their Polaris 1200 engines that werenít intended for this engine? Hereís what I mean. Iím currently running Wiseco Kawasaki 750 ZXI pistons in my Pro 1200. These are 84.5 mm flat tops. Unfortunately, 84.5 is the largest size Wiseco offers so Iím going to have to come up with something larger to use for my next rebuild. I want to continue to run flat tops (itís set up for compression of 200 PSI ) so my options are probably limited. Your thoughts and ideas would be appreciated.


    Thanks,
    Gary


  2. #2
    ph2ocraft's Avatar
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    You could get crazy and have (I think it's) Wiseco make you some.

  3. #3
    800AMSOIL4U's Avatar
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    The pistons that are in Al's Pro 1200 is a 84.81 ELKO 2289a. Hope this helps.

  4. #4
    Hayabusa's Avatar
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    I never thought about checking with Wiseco to see if I could special order what I need. Also, I'll check into Elko pistons as maybe they might work for me. Thank you both for the information.

    Gary

  5. #5
    Connecticut CrazyA's Avatar
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    Gary,
    Kevin is correct about Al's pistons. What they are is stock MSX, graphal coated, 85mm pistons. Same as the 800cc snowmobile pistons.

  6. #6
    ph2ocraft's Avatar
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    Quote Originally Posted by CrazyA View Post
    Gary,
    Kevin is correct about Al's pistons. What they are is stock MSX, graphal coated, 85mm pistons. Same as the 800cc snowmobile pistons.
    Geesh I have 3 boats running these pistons and didn't even think about it.
    Maybe deep down I was trying to keep it a secret..............

  7. #7
    Hayabusa's Avatar
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    ph2ocraft, too late as the secrets out! CrazyA, thank you for the additional information. I now have a few options to consider.

    Gary

  8. #8
    Watcon's Avatar
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    ON SALE.. 85mm Wiseco Polaris flat-tops.

    I have a few sets left... 85mm .. $140.00 for (1)piston & ring set.
    Contact me direct at [email protected]
    Thanks,
    Randy

  9. #9
    The stock msx 140 pistons aren't flat tops are they? They appear to have more dome curvature than a stock pro 1200 piston. What defines a flat top piston?

  10. #10
    Hayabusa's Avatar
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    That's is the problem. I don't believe that MSX pistons are flat tops and I'm not sure about the ELKO. I can run non flat tops if I choose to however, I would have to swap out the domes. This will lower my compression quite a bit unless other changes are made.

    Gary

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