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Thread: 96 XP Rec Build

  1. #11
    I dream skis
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    Re: 96 XP Rec Build

    wmazz,
    thanks for the tips. Do you think opening up the intake ports like I did will have any positive or negative effect? The sleve openings are about 1mm higher and wider now.
    The cylinder exhasut port was smaller than the opening in the sleeve on the sides and bottom and I just blended the cylinder to match the sleeve.IMG_1016[1].JPG
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

  2. #12
    I dream skis
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    Re: 96 XP Rec Build

    97 SPX Waterbox

    Before:
    IMG_1024.JPG

    After:
    IMG_1025.JPG
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

  3. #13
    PWCToday.com Is My Home Away From Home wmazz's Avatar
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    Re: 96 XP Rec Build

    Quote Originally Posted by a1965gt View Post
    wmazz,
    thanks for the tips. Do you think opening up the intake ports like I did will have any positive or negative effect?
    I never noticed any difference, and IMO, case porting should be left to
    pro engine builder that has a good combo that he sells. The reason I
    say that, is that I believe rotary valve timing is already optimized, and
    that you may loose performance instead.

    Klemm brings up a good point, that the cases are smaller then most
    aftermarket carb sets. But in my experience the cases don't create
    any problems, or at least, I never noticed any difference on the race
    boats. I have ran huge dual 50mm Keihin snowmobile carbs and had
    fantastic power without case porting.

    I don't recommend you to use such large carbs, or modified carbs like
    Buckshot, etc. They can create tuning nightmares, and the potential
    for a seizure before you get the engine dialed in.



    Bill M.
    Horsepower == Speed, RPM != Speed



  4. #14
    PWCToday.com Is My Home Away From Home seadoobutch787's Avatar
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    Re: 96 XP Rec Build

    Get yourself a set of Novi 42 mikuni carbs!
    1997 Seadoo SPX---limited mod
    1996 Seadoo GSX--Cruiser
    1995 Kawasaki 550/750sx---Conversion ski
    http://www.pwctoday.com/showthread.p...750+conversion
    https://www.youtube.com/watch?v=ucxd...TcG7qp45xTX9xV

  5. #15
    I dream skis
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    Re: 96 XP Rec Build

    I have two sets of true bore 40's, one I bought for this build, another I recently acquired with a parts ski I bought.
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

  6. #16
    PWCToday.com Is My Home Away From Home seadoobutch787's Avatar
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    Re: 96 XP Rec Build

    Not even close to a Novi modded stock 96xp carb! I have a set on my 97spx, they rock!
    1997 Seadoo SPX---limited mod
    1996 Seadoo GSX--Cruiser
    1995 Kawasaki 550/750sx---Conversion ski
    http://www.pwctoday.com/showthread.p...750+conversion
    https://www.youtube.com/watch?v=ucxd...TcG7qp45xTX9xV

  7. #17
    I dream skis
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    Re: 96 XP Rec Build

    Does Novi still modify theses carbs?
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

  8. #18
    I dream skis
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    Re: 96 XP Rec Build

    Old School Cool
    Original Tracker Sponsons like new.
    IMG_1053[1].JPGIMG_1054[1].JPG
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

  9. #19
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    Re: 96 XP Rec Build

    I don't know what you put on the inside of your boat for the sponsons, but you need at least big fender washers like you have on the outside on the sponsons. Backing plates are the preferred method, if you used the small washers in the pic they will pull through in no time.

  10. #20
    I dream skis
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    Re: 96 XP Rec Build

    Quote Originally Posted by coldblaster View Post
    I don't know what you put on the inside of your boat for the sponsons, but you need at least big fender washers like you have on the outside on the sponsons. Backing plates are the preferred method, if you used the small washers in the pic they will pull through in no time.
    Good call on the washers. I picked up some more 1-1/2" fender washers from Ace Hardware. Now the inside washers match the outside.
    They should be fine as I pulled the sponsons of an old race boat that only used the 1" washers on the inside.
    1996 XP Nearly Complete
    http://www.pwctoday.com/showthread.p...17#post4380117

    1996 WaveBlaster II 1200 conversion in progress

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