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WR500 with a 650

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  • WR500 with a 650

    Can I put a 650 motor in place of the 500 motor in my wr500. I am told that it is a direct replacement. I would just need the 650 electrical harness and definatly a more powerful prop setup... I know that anything can be done, I am currently building a 92 mustang notchback with a supercharged 454. Very tight fit... However this is a quick project, summer is in a few weeks. I need to either rebuild the 500 I have, or find a 650cc and electrical harness.


    1. 650cc in a wr500? does it fit directly?
    2. If the 650 will fit does anybody have the 650 engine and electrical harness. I will be needing the complete harness?

    Also I would be willing to trade the 500's I have towards the 650 stuff.
    I currently have
    2-500cc cylinder casings (1-clean 1-needs boring)
    1- bottom crankcase cover
    1-Crank with good bearings plus rods (1-500cc std bore piston) other is bad
    all the covers and other peices to build a full 500cc motor.. minus piston(head, intake, exhaust,front and back covers, starter)
    1-500cc complete electrical harness...


    Thnx for the help MIKE....

  • #2
    Re: WR500 with a 650

    No you can not.
    SBT Tech Support is here to help with your problems.
    We try to answer each question quickly and accurately.
    Please do not use Private Messaging for Tech Support, use the forums.

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    • #3
      Re: WR500 with a 650

      I have a compleate running 650 engine with carbs/electrics/exhaust. Still running in the ski but the ski had a bad pump. $650 + shipping. rkeller4@bellsouth.net
      Providing mobile JetSki service to the Charlotte / Lake Wylie area.

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