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  1. #1

    JS440 First ski project

    Just got a 1988 js440 from a guy for 50 bucks. This thing is pretty much trashed, I got everything out and need a new engine, electronics, gas tank, and maybe a few other things. Ive been doing some research but really cant find a lot of parts.. Will a 550 bolt right into this thing? And if so would it be the 550sx motor or js motor?


  2. #2
    seaobin's Avatar
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    When you say it is all trashed, please elaborate. that engine was a workhorse. Might just need rings and a fresh hone. Gaskets and your done

    But a 550 will bolt right in . 650 or 750 should bolt into that hull. Might just need a different engine cradle.

    Post pics. Heads and cylinders first to see what you have

  3. #3

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    88 is a piston port motor, very reliable when maintained properly, the 550 SX motor is a reed motor, a little more uumph out of the hull and a little faster top end. The 650 and 750 will fit but you will need an adapter plate.

    take a steam cleaner to it and give it a good scrubbing.

    also pay attention to the electrical box, prone to leakage over the years...

  4. #4
    yeah, everything inside the hull is corroded really bad, i dont even want to mess with the motor, i couldnt even get any of the bolts off without breaking the heads.. i think ill just scrap this bike and get another one thats running... too much money to put in this to make it a decent ski.

  5. #5
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    if you do decide to scrap it let me know where you are located and if its close ill take it off your hands...

    Sean

  6. #6
    jax, fl, if you want anything just make an offer.. 440 pump, solas stainless impeller, driveshaft, stock ride plate and intake grate.. just let me know.

  7. #7
    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    I was interested in the whole thing, but fl would be too much to ship, thanks though

    Sean

  8. #8
    steve45's Avatar
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    Have you tried Uship.com? I'd bet you can find someone that can haul it for you pretty cheap.

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    My name is Sean and I am addicted to STXs smokeysevin's Avatar
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    Its just not worth it, I still need to finish my evil NA stx...

    Sean

  10. #10
    Every adventure comes to an end........ Not Today! wreckingball's Avatar
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    Quote Originally Posted by jdp8488 View Post
    Just got a 1988 js440 from a guy for 50 bucks. This thing is pretty much trashed, I got everything out and need a new engine, electronics, gas tank, and maybe a few other things. Ive been doing some research but really cant find a lot of parts.. Will a 550 bolt right into this thing? And if so would it be the 550sx motor or js motor?

    Check www.x-h20.com forums. You'll probably find everything you need there.

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