300sx/750 conversion ski?
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  1. #1
    PWCToday Regular Steiner17's Avatar
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    May 2012
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    North Hudson, WI
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    300sx/750 conversion ski?

    I have a 750sx with a pretty banged up hull. I'm all about hitting big boat wakes and getting as vertical as possible. I came across a complete 300sx for a good price and am wondering what you guys think about putting my 750 guts and pump in the 300sx hull and if the hull shape on the 300 would be a better freestyle hull than the 750? I've never rode a hull like the 300sx so what are your guys's thoughts?
    '95 Kawa 750sx
    '95 Kawa 750ss
    '89 Kawa 550/650 conversion
    '98 Seadoo SP
    Two '98 Yamaha WR's

  2. #2
    Frequent Poster 89KAW650's Avatar
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    Re: 300sx/750 conversion ski?

    DO IT!! You must know that it will take A LOT of time and fiberglass work.

    IMG_1135.JPG

  3. #3
    PWCToday Regular Pb300's Avatar
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    Re: 300sx/750 conversion ski?

    I've been wondering the same thing! I've come across a '96 750 ss hull with a good pump. I was thinking about picking it up for something like this in the future. Is there a particular 750 pump I should consider or would this model be just fine?

    Thanks!

  4. #4
    PWCToday Newbie
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    Apr 2010
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    BKCT
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    Re: 300sx/750 conversion ski?

    I would start with a sitdown 750 so you can just cut it all out in one piece and glass it right into the 300. You could keep the pump and motor still in place when you cut it out if you want.
    2009 Kawasaki 800 SX-R. Bone stock.... Sold in 2011.
    1987 Kawasaki 650 SX. Custom 68" hull, 781CC Big Pin 750SXi engine swap.
    1989 Kawasaki 300 SX. 750SX engine swap, JS550 pump swap, custom shaft.

  5. #5
    Resident Guru sportsfreak29's Avatar
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    Oct 2011
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    Midland, Tx.
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    820

    Re: 300sx/750 conversion ski?

    Rhaas is working on a 300sx 650/750/800 motor and 750 pump kit but Robin had to shelf the project for a while. It's pretty much done except for the ride plate. I'm waiting to do the same thing.
    Last edited by sportsfreak29; 08-01-2018 at 02:40 PM.
    If you're not crashing, then you're not trying!!!

    '90 650sx, full mod with all the bells and whistles.
    '84 JS550/650 pump swap with Viper 9000 motor.
    '93 550sx with a 650sx motor and Rhass pump kit.
    '81 JS440, full mod 550 PP motor. '
    '93 300sx/750 SP BOB.

    Special thanks to Chris Newmiller, the guys at Prowatercraft Racing, Rhaas Products, and Mitchell at M&M Marine!

  6. #6
    PWCToday Newbie ROUGH INDUSTRIES's Avatar
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    Bakersfield, CA
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    Re: 300sx/750 conversion ski?

    We are in final stages of our 300sx to 440/550/650-800 conversion kit as well
    Rough Industries
    JetSki- Motorcycle- ATV- UTV
    Repair Performance and Custom Fabrication

  7. #7
    PWCToday.com Is My Home Away From Home WFO Speedracer's Avatar
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    Re: 300sx/750 conversion ski?

    Glad to see someone is doing something, I will just keep on cutting, splashing and glassing myself
    Y'all know me, still the same O.G. but I been low-key
    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

    I was 300SXing when 300SXing wasn't cool !

  8. #8
    PWCToday Newbie ROUGH INDUSTRIES's Avatar
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    Re: 300sx/750 conversion ski?

    Teaser.....

    Sent from my SM-G930V using Tapatalk
    Rough Industries
    JetSki- Motorcycle- ATV- UTV
    Repair Performance and Custom Fabrication

  9. #9
    PWCToday.com Is My Home Away From Home BLRider's Avatar
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    SE MI
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    Re: 300sx/750 conversion ski?

    Quote Originally Posted by ROUGH INDUSTRIES View Post
    Teaser.....
    Are you making the pipes and tanks too?
    Never argue with an idiot, they will drag you down to their level then beat you with experience.

  10. #10
    PWCToday Newbie ROUGH INDUSTRIES's Avatar
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    Aug 2018
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    Bakersfield, CA
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    41
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    Re: 300sx/750 conversion ski?

    Yes

    Sent from my SM-G930V using Tapatalk
    Rough Industries
    JetSki- Motorcycle- ATV- UTV
    Repair Performance and Custom Fabrication

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