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  1. #1

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    May 2005
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    Jetting Starting point Buckshot 50 bmr on 98 GP1200

    The ski has mild porting and 160 compression any help wpuld be appreciated.


  2. #2
    Pistonwash's Avatar
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    Wow..it's been a while and I do not have my notes from years ago. What is there now? Are they the Buckshot magnums or the modified 46's? These carbs were a nightmare to get dialed in because they spew so much fuel for a GP.

  3. #3

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    They are the billet ones

  4. #4
    Pistonwash's Avatar
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    You're gonna have a hard time finding jets for those carbs..they were special, I think the N/S was different than a standard Mikuni..maybe the pilots and mains can be changed. They are a apin to fool with and they give very little performance gain. You might gain 2 mph over and taper-bored OEM carb. Actually I preferred the OEMs because you could easily change them. The original maker of the Buckshots is no longer doing jetski work at all..you might a find good old school tech shop and ask them. Start with RIVA and see if they can help you...they are major pain to try and "cyber-tune". Seriously..I used to get this question all the time back in the day. I have worked on a hundred old style GP in my life..and the Buckshots were never worht the triuble..where did you get them? You might could sell them to someone who has modified GPR on this board..but they were worthless on the old style GP's.

  5. #5

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    Thanks

  6. #6
    krispaintballz's Avatar
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    Sep 2007
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    Kenosha, WI
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    2,978
    I would try:
    140 high
    115 low
    95 gram spring
    2.0 needle and seat
    120 on the restrictor for the return
    1 out on the highs
    1 out on the lows.
    Attached Files Attached Files

  7. #7
    Moderator OsideBill's Avatar
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    The Billet 50's I had recently used standard Mikuni parts for jets and N&S. However another member had a set that used a different style N&S, he was able to order them. I can put you in touch with him if you need.

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