Gp1200 superjet swap?
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  1. #1
    PWCToday Newbie
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    Gp1200 superjet swap?

    1FCD2DD0-7755-40F2-8940-7A7B4B01AB0B.jpegI have a 2006 superjet shell (no pump,nozzle,anything g literally just a shell) and a 1997 waverunner gp1200 complete and running. Can anyone tell me if all the waverunner stuff will work in the superjet to do a full swap? Will the pump,nozzle,drive line all fit in the superjet shell or will I need to buy some stock superjet stuff? I have found a couple build threads and know I will need a new prop to make it work better. I can modify exhaust fuel tank ect no problem just want to know if all the pumps and everything will fit?
    Last edited by purajones; 05-25-2020 at 12:51 PM.

  2. #2
    Top Dog JC-SuperJet's Avatar
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    Re: Gp1200 superjet swap?

    SuperJet 1200.JPGYou can fit a 65U 1200 Engine in a SuperJet but it's not worth it. Too heavy, a gas Hog and handles weird.P1010609.JPG
    Attached Images Attached Images
    Last edited by JC-SuperJet; 05-25-2020 at 01:11 PM.

  3. #3
    Top Dog JC-SuperJet's Avatar
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    Re: Gp1200 superjet swap?

    If you still move ahead with this project and if you want maximum performance, you will need to enlarge the Exhaust Outlet and Hoses to 3.25".

    If you funnel this triple exhaust into the 2.25 Exhaust, it will restrict the flow, add too much back pressure and only get 57 mph.
    Last edited by JC-SuperJet; 05-25-2020 at 01:16 PM.

  4. #4
    PWCToday Newbie
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    Re: Gp1200 superjet swap?

    Ok and will the pump,nozzle driveline all swap over as well? Or do I need some of the stock superjet stuff?
    Last edited by purajones; 05-25-2020 at 02:05 PM.

  5. #5
    Top Dog Hydro-Mike's Avatar
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    Re: Gp1200 superjet swap?

    [QUOTE=purajones;4554532]Ok and will the pump,nozzle driveline all swap over as well? Or do I need some of the stock superjet stuff?[/
    You will need to mod the pump tunnel to fit a 155 pump in it , a custom length driveshaft (or make what you have work while sorting out the engine mounts) and a WB2 wear ring to put on that pump. Also you will need a impeller the stock one will leave you wondering why you did this.

  6. #6
    PWCToday Guru futom's Avatar
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    Re: Gp1200 superjet swap?

    I did this conversion. Was a complete nightmare. You need to make engine mounts. 3.5" exhaust. Move tank forward. Move battery forward. Custom midshaft.
    Relocate electrical box from a gp1200 into SJ. Modify hood. Modify exhaust manifold. Modify intake. And I'm forgetting another 50 changes. Then you will have a ski that is prone to sinking. Make sure your weekends dont matter because all you will be doing is wrenching on that ****ing thing. I'm not trying to discourage, just telling the truth. Their is a reason why everyone sells a "super fast triple". Buy yourself the sxr1500. You'll be glad you did.
    Last edited by futom; 05-25-2020 at 10:42 PM.
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