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  1. #1
    eb87's Avatar
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    GP1200 Exhaust cooling

    ok peeps, the exhaust overheated due to being clogged with shells and melted the hose, so as expected I found lots of gunk inside but my question is specifically on the 2 small nipples at the end, the one closer to the end seems clogged but can't find where it drains to. Does the second pic look correct? Any help would be greatly appreciated.
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  2. #2
    gp1200270's Avatar
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    Yeah that is pretty common on the gp 1200.what you want to do on pic # 2 remove the metal retainer and the seal beneath it.almost 100 % that area is clogged up.Once you remove that you should be able to be free on both nipples.Also on pic # 1 towards the front remove the i think 5 bolts.most likely when you pull that apart that will be clogged as well.I have a 97 gp 1200 and had that problem when i sucked up some sand.Just be careful when pulling the gasket apart when you remove the 5 bolts.If you are careful you can reuse the gasket.

  3. #3
    Yamaha artisan Cutlass's Avatar
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    The fitting closes the end of the pipe, drains out around that metal and rubber thing pictured in your pic number 2.
    Pull it all apart




  4. #4
    eb87's Avatar
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    Pulled it all apart and sure enough, the bottom was completely clogged. What is the purpose of the rubber gasket and metal retainer? would there be any benefit to leaving it off and get some additional water in the exhaust? Many thanks for the replies.
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  5. #5
    Yamaha artisan Cutlass's Avatar
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    No. You have put the rubber back in or you'll be flushing too much water down the exhaust and it won't run as well under certain conditions. In fact, we do the opposite. We restrict the water flow through those fittings (with a JetWorks valve) to keep the water box dry during extended idle, so we can get an improved holeshot.

    If you want to do the Jetworks mod, now the time. Here's the link: GP1200 65U JetWorks Mod

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  7. #6
    eb87's Avatar
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    Ok great, I got all new gaskets ordered including the retainer ring and rubber gasket. I'll stay away from the jetworks mod as this is a rec ski and not terribly concerned about holeshot. Thanks for helping me out.

  8. #7
    gp1200270's Avatar
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    +1 to cutlass.Good pics

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