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  1. #1
    98gsxl951's Avatar
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    want to rebuild carbs on my 787 xp, what to do for jetting or just stay stock?

    like the title says, on my gsxl 951 i did bill oniels 951 kit,with proks and love it, is there a kit like that for the 787? or should i jsut do them stock?


  2. #2
    "Tearing it up on the water" seadoobutch787's Avatar
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    If your just rebuilding your stock carbs with stock airbox then you don't have to rejet, you only rejet when you add free flowing air filters like the proks because you suck in more air and you need more fuel to feed the engine.
    Bill does sell a jet kit for the 787 if you set it up like your 951.
    PS do yourself a favor on that 951 and get yourself a set of outwears to help keep water out of that engine, trust me you engine will thank me

  3. #3
    98gsxl951's Avatar
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    where can i get a set cause i like to ride the ski and i do get water in the hull from messing around and would rather not blow my engine cause of soemthing that i could of easily avoided. where can i get them? also is it worth doing proks on the 787?

  4. #4
    been around the block Stagesrt4's Avatar
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    so with just an airbox/arrestor added and nothing else you should/have to rejet?

    i dont wanna do to much modding to the engine of my 787 but i have a Worx arrestor box/air box...(1 piece)


    i have a bilge in mine to make sure i keep all that extra water out when i want

  5. #5
    98gsxl951's Avatar
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    yes, your introducing more air which will create a lean condition. need to compensate for more air. like if you put a bigger turbo on your srt you would need larger injectors.

  6. #6
    been around the block Stagesrt4's Avatar
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    Quote Originally Posted by 98gsxl951 View Post
    yes, your introducing more air which will create a lean condition. need to compensate for more air. like if you put a bigger turbo on your srt you would need larger injectors.
    cool

    cause just adding an intake to my car wont require me to adjust anything, but yea porting, an exhuast, bigger turbo, etc.... would require more fuel...


    didnt realize the stock airbox was so restrictive... cause ill have to do some more research on carbs n tuning

  7. #7
    96XPSS's Avatar
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    Quote Originally Posted by 98gsxl951 View Post
    where can i get a set cause i like to ride the ski and i do get water in the hull from messing around and would rather not blow my engine cause of soemthing that i could of easily avoided. where can i get them? also is it worth doing proks on the 787?
    PPG sells them too, with Fly's. They come with jetting, and needle & seats. I'd do it in a heartbeat, you will get 30% better fuel economy and have more HP and performance. It's kind of a no-brainer.

  8. #8
    96XPSS's Avatar
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    Quote Originally Posted by Stagesrt4 View Post
    so with just an airbox/arrestor added and nothing else you should/have to rejet?

    i dont wanna do to much modding to the engine of my 787 but i have a Worx arrestor box/air box...(1 piece)


    i have a bilge in mine to make sure i keep all that extra water out when i want
    Sell the Worx and get Fly's. They are worth the money in performance difference.

  9. #9
    been around the block Stagesrt4's Avatar
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    Quote Originally Posted by 96XPSS View Post
    Sell the Worx and get Fly's. They are worth the money in performance difference.
    ok ill take your guys advice


    i got the worx for free...

    i still have stock airbox that i guess ill run for the mean time

  10. #10
    been around the block Stagesrt4's Avatar
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    or maybe its a westcoast arrestor...i forget


    its blue/yellow with a big "W" on it....ha




    PS. where would i go about looking up jetting kit and flys arrestor

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