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  1. #1
    PWCToday Newbie FvW's Avatar
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    YAMAHA Superjet 1200

    Dear All,

    Recently I started the project to change the engine on a ' 08 superjet.
    Take out the 72hp, 701 engine, and install a GP1200, 135 hp 3cylinder engine.

    Beside some pump and rideplate issieu's (still to be fine tuned), the build was a big succes.
    You can follow the progress on: superjet1200.nl (copy to your browser)

    FvW
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  2. #2

    Re: YAMAHA Superjet 1200

    Thats awesome..........how does it ride??

  3. #3
    PWCToday Guru motomike461's Avatar
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    Re: YAMAHA Superjet 1200

    How much more heavier is that motor? I couldn't believe how you got that to fit! Very clean job, and hope it rides well!

  4. #4
    PWCToday Guru motomike461's Avatar
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    Re: YAMAHA Superjet 1200

    Let us know when you get a video up also!

  5. #5
    PWCToday Newbie FvW's Avatar
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    Re: YAMAHA Superjet 1200

    Hi,

    Thanks for your positive reactions,
    in fact I scaled it last week and compared to a brand new Superjet 700 (without gasoline, but with battery)
    The Superjet 1200 is 21 kg heavier.

    Original brandnew superjet 700 ( without gasoline, with battery ) = 147 kg
    Superjet 1200 ( without gasoline , with battery ) = 168 kg

    My keybord is now 20 cm further away from me. ( Acceleration lenghtened my arms )
    honest.....I never had a unit pull so hard, infact I will change the impeller to a 17 / 23 Solas.
    16 / 20 concord is too light !!, not even for the speed 94km/h but to reduce the torque out of a corner.(I get tired very fast)

    The pump is standard (blue printed) with TBM pumpcone (longest cone) and modified R&D intake and current 16 / 20 Solas concord.

    Next week I will test the 17 / 23 and update my site.
    My guess is to gain 2 km / h, and have a better (less) torque on mid RPM.

    FvW
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  6. #6
    PWCToday Guru CTKawa's Avatar
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    Re: YAMAHA Superjet 1200

    thats amazing. props to you

  7. #7
    I dream skis GP1300rtoomuchfun's Avatar
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    Re: YAMAHA Superjet 1200

    OMG... I'll just come back here daily and drool... Very nice job! When can we see a vid of the beast?
    98' Superjet http://www.pwctoday.com/f84/my-rn-winter-project-268312.html
    97' GP1200
    07' GP1300R


    "Never take life too seriously. Nobody gets out alive anyway."

  8. #8
    formally known as seadookid PWCToday.com Is My Home Away From Home starter kill's Avatar
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    Re: YAMAHA Superjet 1200

    you deserver a beer for this. cheers




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    i kill starters
    95 seadoo HX w/factory pipe
    98 yamaha superjet w/tons of goodies =)
    08 yamaha superjet stock roomate's ski
    90 yamaha superjet w/psi pipe loaner ski

  9. #9
    PWCToday.com Is My Home Away From Home Shonuff's Avatar
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    Re: YAMAHA Superjet 1200

    Very cool.
    SUR #192

  10. #10
    PWCToday Newbie FvW's Avatar
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    Re: YAMAHA Superjet 1200

    Thanks all......

    Today I prepared the pump for the testride of Sunday 13 September.
    Removed the 16 / 20 impeller and installed the 16 / 23 impeller.

    I made some pictures of my modified intake and the difference between a standard pump and my set up.

    I reworked the impeller to sit closer to the vains, this increases the intake pumpvolume a bit, and makes a better transition to the pumpcone.

    Sunday will be the day.............

    FvW
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