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  1. #1
    ryanf117's Avatar
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    carb tuning help !

    well i dont know where to start, but i have a 97 yamaha gp1200 i need to know if anyone has any idea wheir i could start with jet size, pop off pressure, needle seat size. mods are - riva cool head, bored 20 over, protec intake, buckshot sbn carbs, after market reeds, reed stuffers, and its been ported.



    thanks
    ryan


  2. #2
    Moderator OsideBill's Avatar
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    try this add 5-10 on the bottom and 5-10 on top for porting head does not really make a difference the porting does though.
    Click image for larger version. 

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  3. #3
    ryanf117's Avatar
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    add 5-10 on main and pilot ?

  4. #4

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    Yes, bottom =Low or pilot jet and Top = High or main jet.

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