carb jet size

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  • doug hodgson
    #1

    carb jet size

    got a 82 GS650 glz mikuni stock carbs but old air box took a crap went with individual KN type air filters what main jets should i use
    Tags: None
    • rkubik
      #2
      stock size is..

      110, just to save the trouble to opening up to look.

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        • Guest
          #3
          You're going to have to also raise your jet needle and go up at least one size on your main. 115.
          I'd go with a Dynojet kit. It's hard to get the stock needle right with pods because they were intended to be used with an airbox.
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            • andrewclaycomb
              #4
              What are people with 77 to 79 GSs doing? K&N doesn't make a kit, but I found a seller on ebay that makes different sizes of main jets for these late 70s bikes. I have a vance and Hines exhaust with K&N pods going on soon.

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                • pasteurized
                  #5
                  Andrew, you can buy mikuni main jets for your 77-79 bike from your suzuki dealer or from many places on the web (crc2onlinecatalog.com, bikebandit.com, etc). My '77 750 has a Vance and Hines and pod filters and I ended up with 125 mains, and I am still getting the pilot circuit dialed in. 17.5 was too big, so I am back at the stock sized pilot jet (15) but with the pilot screw out an additional turn and I had to raise the needles 2 notches. Once the snow melts I will be able to test it out a bit better.

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