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Jet size VS V&H exhaust upgrade

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    Jet size VS V&H exhaust upgrade

    1982 GS1100L

    Can anyone advise?
    I currently have 170's installed

    If Im gonna pull these again I might as well out better jets in

    #2
    For a pipe, 2-3 sizes up from stock.

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      #3
      So would you say 190's or 200's???

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        #4
        Stock ones were 160's

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          #5
          One size is 2.5 units. So if the stock were 160, then 165 or 167.5 should be good. Since you already have 170s in there, it is time to do some plug chops and see if they are too rich. Then go from there.

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            #6
            Originally posted by koolaid_kid View Post
            One size is 2.5 units. So if the stock were 160, then 165 or 167.5 should be good. Since you already have 170s in there, it is time to do some plug chops and see if they are too rich. Then go from there.
            Plug chops? Can you elaborate?

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              #7
              Your carbs have 3 ranges: Main jet, needle and pilot jet.
              You examine the color of the plugs at each range. Since all you have changed is the mains, you need to examine the color of the plugs after they have been running on the mains only. Black is too rich, white is too lean, and tan is just right.
              If anyone has a link to the actual procedure, please post it here, as I cannot find it at this time.

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                #8
                Originally posted by BIG_brother View Post
                1982 GS1100L

                Can anyone advise?
                I currently have 170's installed
                Originally posted by BIG_brother View Post
                Stock ones were 160's
                Not quite sure how to tell you this, but stock main jets are 115.

                The 160 and 170 jets you are talking about are probably in the intake throat at about the 8 o'clock position?
                Those are your PILOT AIR JETS, not main jets.

                The main jets are down in the bottom of the carb, in the float bowl.

                .
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                  #9
                  Always . . .
                  http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                  Life is too short to ride an L.

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