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Thread: 98 GSX Mods

  1. #1

    98 GSX Mods

    I just bought a 1998 sea doo GSX and am looking to do some cheap mods to it. I did a compression test on it and it registered at 130 psi on both cylinders. One mod that I have read about was putting the 97 1/2 white exhaust head on it. Is this a good mod? Do I just need the head pipe and thats it? Thanks in advance.


  2. #2
    flyin' the friendly skies airbornexp's Avatar
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  3. #3
    Thanks for the great link! Is the 97 1/2 exhaust head a good starting mod? Is the head all I need to put this on my 98 gsx?

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    flyin' the friendly skies airbornexp's Avatar
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    I think that the head is the same...just the exhaust that is slightly different

  5. #5
    Sorry. I mean the exhaust head pipe.

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    flyin' the friendly skies airbornexp's Avatar
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    The head pipe will match up to the exhaust manifold

  7. #7
    So what is the census on this mod? Worth it or not?

  8. #8
    SURFnTURF's Avatar
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    Will give you approx 120-170 more rpms on top but you will have to enlarge the stock manifold to suit the pipe diameter (2mm larger) or locate a 97.5 exhaust manifold as well.
    You will be better to re-jet your carbs and install after market air filters, then maybe have your prop re-pitched,then rinnaldi reeds,advance your ignition timing 2 degrees (run premium fuel) and then do the pipe.

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