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  1. #1

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    Pro 785 exhaust coupler replacment ,help needed

    This weekend the MAG pipe rubber coupler , blew out near the mainfold .Questions : a local boat shop has wet exhaust hose 3 1\2 " 250 degree temp rated in stock. Good or should I find the "blue hose on it now "? Is there a easy way to replace the coupler , or do I have to remove the manifold and pipes ?
    As always thanks for the help !!!


  2. #2
    skigolfnut's Avatar
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    Did the silicone coupler tear?
    You can get replacement couplers here if you get some good measurements,
    http://www.siliconeintakes.com/
    you have to take the manifold off the engine, that one is a pain, the front bottom bolt is not a allen head cap but a regular head bolt,
    and you can only turn a little at a time with a open or box end wrench,
    I think the wet exhaust hose has to be wet, to be able to withstand the high temp,
    that part of the exaust gets pretty hot, I would stick with silicone,

  3. #3

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    Thanks Skigolfnut ,
    The coupler blew out ( ripped ) this sunday at Lake Conore , about a 1"inch tear . West Marine ( near you ), has the 3 1\2 " hose I need. Was looking for quick fix , so I could ride this weekend . I did this years ago (replaced pipes) ya, what a real pain in the @#$ !!!

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Take it from me, stay with the pliable hose. That stiff stuff is a PAIN!!!!

    Silicone hose works best for ease of install/removal.

    I would seriously be looking into WHY your hose blew. Most likely a restriction in your cooling. There are tiny orifices in the water manifold. I would check to see if they are clear.

    And it's not a bad idea to install a water strainer to prevent clogging either.

  5. #5
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    McMaster Carr silicone coolant hose........not cheap but its what you are looking for

  6. #6
    Moderator beerdart's Avatar
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    My guess is you blew an o-ring the coupler should never see exhaust.

  7. #7

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    Thanks Beerdart,
    I was not even thinking of the o ring , will check , and replace a well
    Thanks

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