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  1. #11
    PWCToday Newbie
    Join Date
    Jun 2017
    Location
    North Dakota
    Posts
    11

    Re: 1991 Kawasaki 300SX engine swap

    Quote Originally Posted by Rushford_Ripper View Post
    Lots of work to swap......Rhaas products I hear is currently making a swap kit though.
    Rush do you know what kind of motor the kit uses to swap into the 300?

  2. #12
    PWCToday.com Is My Home Away From Home Rushford_Ripper's Avatar
    Join Date
    Dec 2009
    Location
    Buffalo
    Age
    30
    Posts
    5,535

    Re: 1991 Kawasaki 300SX engine swap

    I don't, contact Robin at Rhaas products and ask


  3. #13
    I dream skis sportsfreak29's Avatar
    Join Date
    Oct 2011
    Location
    Midland, Tx.
    Posts
    534

    Re: 1991 Kawasaki 300SX engine swap

    I've read a couple posts from people putting a 550 into a 300sx. They used a 1/2" aluminum bars mounted to the hull, then drill and tap into the bar for the 550 mounts. This would work perfectly for larger engines with the 650 adapter plate.

    It was recommended that the bottom of the hull be reinforced with a few layers of fiberglass to prevent cracking in the hull, as the hull wasn't designed to handle the horsepower of the larger motors.
    Last edited by sportsfreak29; 10-02-2017 at 10:51 AM.
    If you're not crashing, then you're not trying!!!

    '84 js550/650 Hull, Tubbies, Footholds, 650sx Motor & Pump, 1.75 over 663cc's, OP Comp Head 190psi, 44SBN, Vortex FA, WC Intake, Boyesen Reeds w/ Stuffers, Factory B Pipe, Factory Waterbox, 650 Side Exhaust, Dual Cooling, Billet Couplers, Jet Works FCV, OP 650sx Ride Plate, PJS Top Loader, Skat 9-17, -2" AM Pole, MSD total loss. 54mph.

    Special thanks to Chris Newmiller, and Mitchell at M&M Marine!

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