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  1. #1
    PWCToday Newbie
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    Sep 2017
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    waterbox sealing

    I haven't found a thread on how to seal a stock 550 waterbox. I bought a used one to replace the loud aluminum one in my ski and when I fired it up I noticed smoke coming from the front of the ski.

    What's the best way to seal it and with what?

    Thanks

  2. #2
    PWCToday.com Is My Home Away From Home TMali's Avatar
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    Re: waterbox sealing

    Get a new one. That one is junk and ready to split open.

    If your really set on keeping that one, i would fiberglass the whole thing

    OR

    Are you sure its the box? not a bad hose or bad clamp now?

  3. #3
    PWCToday.com Is My Home Away From Home Rushford_Ripper's Avatar
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    Re: waterbox sealing

    I used 3M 5200 to re-seal my 550 waterbox years ago. Have to use the stuff that cures over 7 days, split it in the 2 halves, clean it, re-seal


  4. #4
    Top Dog
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    Re: waterbox sealing

    used to use the grey marine tex to glue both halves after mods..

    op,i have a clean used box if yours is beyond repair.

  5. #5
    PWCToday Newbie
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    Re: waterbox sealing

    I just got this ski. It had a Westcoast waterbox and although I really do like the way it sounds it's just LOUD! I bought a stock one on here but when I put it in and fired the ski up I noticed wifts of smoke coming from the direction of the waterbox. I think I'll try the 5200/marine tex approach on everything that looks like a seam and try it again. For ****s and giggles I put the Westcoast back in and didn't see the smoke so I doubt it was a hose clamp or the like.

    I appreciate the help fellas!

  6. #6
    Frequent Poster heresjohnny151's Avatar
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    May 2008
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    Re: waterbox sealing

    I know this response is a little late to your post, but you can try diverting more water into the exhaust to make it a little less noisy. (still using the westcoast water box) If you choose to repair the stock water box, i have always had good results using fiberglass resin with chopped up fiberglass.

  7. #7
    PWCToday Newbie
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    Re: waterbox sealing

    Actually, it's still warm enough to ride here and I had a few other issues to work through before I put it on the stand and start working my winter tear down. I put the westcoast back in to avoid the exhaust under the hood. How do I divert water into the westcoast and how much will it muffle? My goal is to annoy as few people as possible.

  8. #8
    Frequent Poster heresjohnny151's Avatar
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    Re: waterbox sealing

    Sorry for the late reply...you can t-off from the front of the head into the tail end of the exhaust pipe.

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