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Thread: JAE

  1. #1

    Join Date
    May 2009
    Blenheim, NEW ZEALAND
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    Hi All
    After getting my rigger out for the first
    Time gps at 90 km/hr not to bad.I am running
    A hyper 21 onfa motor has anyone done any
    Mods to this motor porting crank work
    Or head button ?

  2. #2
    Ron Olson's Avatar
    Join Date
    May 2002
    Kalamazoo, MI

    RE: JAE

    If you're still using the stock heat-sink head you can remove most of the fins as you don't need them. You'll not only reduce weight, have less hanging out in the open air but will allow the engine to build up heat for better performance. With the engine so close to the cool air coming off the water it doesn't need those big heat-sinks.
    Post some shots of your boat when you get a chance to.
    IMPBA 17238 S
    269 Racing Team

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