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  1. #1
    PWCToday Regular
    Join Date
    Aug 2015
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    Kalamazoo, Michigan
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    146

    787 Leak down fail

    My rave valve bodies are causing a leak down failure on my 787. I cleaned both mating surfaces extremely well and put new gaskets but they still leak.
    Thinking of using some Threebond 1211 to help seal them. Yes/ No suggestions?

  2. #2
    PWCToday Regular
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    Aug 2012
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    whitby ont canada
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    60
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    Re: 787 Leak down fail

    I would remove rave and look closely at the base for cracks, flat stone the cylinder surface and try again, the rave housing has a small raised edge so don't stone it, if that doesn't work , yes a small amount of threebond , but be carefull not to plug up small holes in housing or rave will not work

  3. #3
    PWCToday Regular
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    Re: 787 Leak down fail

    I did use a flat hone stone on the cylinder mount area and used a soft wire wheel on the rave mount area. Maybe I'll get another set of gaskets and try again before using the 1211.

  4. #4
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: 787 Leak down fail

    You cannot pressure test with the rave valves on, in the Seadoo pressure test kit is has blockoff plates for the rave valves. The enclosed pic is not of the factory kit but one very similar.
    Attached Images Attached Images
    Last edited by WFO Speedracer; 01-18-2018 at 09:27 AM.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries


  5. #5
    PWCToday Regular
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    Re: 787 Leak down fail

    I did use the block off kit and all was good so I thought I would check with the rave valves too. The rave valve mating surface leaks so I assume that's no good.
    So is it okay for that area to leak with the rave valve mounted????
    Last edited by critracer; 01-18-2018 at 09:42 AM.

  6. #6
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: 787 Leak down fail

    I have never checked one with the rave valves attached so I can't really say, I can say that if it didn't leak there would not be a block off plate for it though.
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries


  7. #7
    PWCToday Regular
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    Aug 2012
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    whitby ont canada
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    Re: 787 Leak down fail

    I test with rave plates on and with valves in stalled, I have found diaphram leaks at very low pressure around the spring area ( repaired by tightening the springs) as well as pin holes in the diaphram itself

  8. #8
    I dream skis JC-SuperJet's Avatar
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    Jul 2013
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    Cypress, TX
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    712

    Re: 787 Leak down fail

    Rave valves will not hold more than 5 psi...

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