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Carburetor Jet questions - '86 Maxim X

Discussion in 'XJ Technical Chat' started by Piersol, Jul 13, 2007.

  1. Piersol

    Piersol Member

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    I read somewhere here that if you are a bigger guy over 260lbs that you should consider upping the main jets to the next size. Right now I have 105 mains (could someone verify?). Should I step up to the next size? I weigh 265 and am 6'3"

    Also, will the small head jets work in place of the large head jets in a Mikuni carb? They are exactly the same except for the head size. Same length, and same #105
     
    Piersol, Jul 13, 2007
    #1
  2. BlueMaxim

    BlueMaxim Active Member

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    Unmitigated BS! If you need to up the main jets it is because you added a K&N filter or have overbored the cylinders. Your weight has nothing to do with the proper tuning of the engine.
     
    BlueMaxim, Jul 14, 2007
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  3. Piersol

    Piersol Member

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    Well, I do have a UNI foam filter on my bike. Same as K&N?
     
    Piersol, Jul 14, 2007
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