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  1. #1

    Why is the center carb tuned differently?

    Was dialing in the 97 the other week and set up my carb needles to stock as a starting point. In the Yamaha manual they want the high speed needle on the center carb to be 7/8 out and the other 2 carbs to only be 1/2 a turn out. Whats the deal with this? I have Buckshot modded 47's and an R&D flame arrestor.

    By the way, the GP hauls A$$. Goes from zero to holy sh*t real fast. That Skat magnum pump really keeps the boat hooked in the chop.


  2. #2
    Flying Scotsman's Avatar
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    more fuel for cooling

  3. #3
    Should I continue doing that even with the after market add ons?

  4. #4
    Flying Scotsman's Avatar
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    some do some dont
    I like stagered jetting but have run aftermarket goodies with all 3 jetted the same.
    piston wash and plug chops are a good guide.
    glad you like the GP

  5. #5
    cheatin' piston popper addicted's Avatar
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    It has to do with the exhaust pulses too. Just check your piston wash and adjust the carbs until they all burn evenly. Think of each carb& cylinder as it's own little engine.

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