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  1. #1

    Big Bore molydenum performance pistons(forged)?

    I found some snowmobile pistons and I know that my ski is water cooled.These pistons are molydenum coated skirts like the kind I would use on my streetrod engines and have a small dome.I just wanted to know the difference between the 2 cycle pistons for water cooled and air I guess.I thought some sled engines were also water cooled (closed system).These come in 72mm which is what I want and I am no stranger to machine work for more power as far as shaving heads,gasket thickness and big bore jobs.These pistons also have the same pin size.Please advise.

  2. #2
    Join Date
    Jul 2007
    Cedar Rapids,Iowa
    The polaris MSX 140 uses the same pistons used in the polaris liquid cooled 800 snowmobiles.And they also have coated skirts.

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