XS1100SG which pilot jets

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  • jetmechmarty
    Master of XSology
    • Nov 2003
    • 7765
    • Coldwater, Mississippi

    #1

    XS1100SG which pilot jets



    Which one of these pilot jets is correct for my bike? I've been getting terrible fuel economy for some time and I'm running out of ideas. How do I get the correct pilot jets?
    Marty (in Mississippi)
    XS1100SG
    XS650SK
    XS650SH
    XS650G
    XS6502F
    XS650E
  • BA80
    Doctor of XSology
    • Oct 2010
    • 9980
    • Tulsa, Ok

    #2
    I should be the one on the left but also those in the pic have 8 air bleed holes in the sides. The correct ones only have 6. A 2-1-2-1 setup.
    Greg

    Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

    ― Albert Einstein

    80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

    The list changes.

    Comment

    • jetmechmarty
      Master of XSology
      • Nov 2003
      • 7765
      • Coldwater, Mississippi

      #3
      Originally posted by BA80
      I should be the one on the left but also those in the pic have 8 air bleed holes in the sides. The correct ones only have 6. A 2-1-2-1 setup.
      That's what I have. 6 holes. 42.5 slow 110 mains. 30 mpg at best. Pulling my hair out.
      Marty (in Mississippi)
      XS1100SG
      XS650SK
      XS650SH
      XS650G
      XS6502F
      XS650E

      Comment

      • BA80
        Doctor of XSology
        • Oct 2010
        • 9980
        • Tulsa, Ok

        #4
        What do your plugs look like?

        I continuously get mid to high 20s with mine unless I ride at 55 - 60 MPH. I've gotten up to about 42 MPG at those speeds. My plugs look perfect so I've jus accepted it.
        Greg

        Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

        ― Albert Einstein

        80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

        The list changes.

        Comment

        • jetmechmarty
          Master of XSology
          • Nov 2003
          • 7765
          • Coldwater, Mississippi

          #5
          Originally posted by BA80
          What do your plugs look like?
          Black. Follow me and you'll smell gasoline. Someone at VYR said I had the wrong slow jets. Beats me.
          Marty (in Mississippi)
          XS1100SG
          XS650SK
          XS650SH
          XS650G
          XS6502F
          XS650E

          Comment

          • BA80
            Doctor of XSology
            • Oct 2010
            • 9980
            • Tulsa, Ok

            #6
            I dislike the late carbs with a passion. I had early carbs on okie even be for I swapped to the F engine.

            Have you tried lowering your float levels? 1/2 mm .at a time and see if it gets better
            Greg

            Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

            ― Albert Einstein

            80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

            The list changes.

            Comment

            • jetmechmarty
              Master of XSology
              • Nov 2003
              • 7765
              • Coldwater, Mississippi

              #7
              Originally posted by BA80
              I dislike the late carbs with a passion. I had early carbs on okie even be for I swapped to the F engine.

              Have you tried lowering your float levels? 1/2 mm .at a time and see if it gets better
              I assume you mean lower the fuel level in the bowl? Or do you intend an increase to the level?

              Also, these brass fittings. What are they and where do I get them?



              Thanks for the help, Greg.
              Marty (in Mississippi)
              XS1100SG
              XS650SK
              XS650SH
              XS650G
              XS6502F
              XS650E

              Comment

              • BA80
                Doctor of XSology
                • Oct 2010
                • 9980
                • Tulsa, Ok

                #8
                Yes, lower the fuel level. You should be able to get those fittings at just about any hardware store. Brass fittings in the plumbing dept.
                Greg

                Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

                ― Albert Einstein

                80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

                The list changes.

                Comment

                • BA80
                  Doctor of XSology
                  • Oct 2010
                  • 9980
                  • Tulsa, Ok

                  #9
                  One other thought, be sure the air bleed holes are clear in the emulsion tubes. If they are blocked, clogged ,you will run rich as well.

                  The air jets on the air cleaner side of the carbs too.
                  Greg

                  Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”

                  ― Albert Einstein

                  80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

                  The list changes.

                  Comment

                  • jetmechmarty
                    Master of XSology
                    • Nov 2003
                    • 7765
                    • Coldwater, Mississippi

                    #10
                    Done and done. Thanks!
                    Marty (in Mississippi)
                    XS1100SG
                    XS650SK
                    XS650SH
                    XS650G
                    XS6502F
                    XS650E

                    Comment

                    • motoman
                      Master of XSology
                      • Aug 2005
                      • 8413
                      • Grand Junction, Colorado

                      #11
                      Marty, Greg IS correct by suggesting lowering the fuel bowl levels 1/2 a mm. Also, make sure all four fuel bowl levels are equal with engine at an idle. BTW, 1/2 a mm. equals .012 using a slide dial indicator for float level check.
                      Last edited by motoman; 11-25-2019, 10:27 PM.
                      81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                      Comment

                      • motoman
                        Master of XSology
                        • Aug 2005
                        • 8413
                        • Grand Junction, Colorado

                        #12
                        Originally posted by motoman
                        Marty, Greg IS correct by suggesting lowering the fuel bowl levels 1/2 a mm. Also, make sure all four fuel bowl levels are equal with engine at an idle. BTW, 1/2 a mm. equals .012 using a slide dial indicator for float level check.
                        Any confusion correction: 1/2 mm of fuel level change IS equivalent to a .012 actual change of fuel bowl levels.
                        81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                        Comment

                        • jetmechmarty
                          Master of XSology
                          • Nov 2003
                          • 7765
                          • Coldwater, Mississippi

                          #13
                          Thanks Motoman. I'm going to make sure the correct needles are installed this evening. I'll have to put it away for a couple of days.

                          I should see 5GL16 with a magnifying glass?
                          Marty (in Mississippi)
                          XS1100SG
                          XS650SK
                          XS650SH
                          XS650G
                          XS6502F
                          XS650E

                          Comment

                          • motoman
                            Master of XSology
                            • Aug 2005
                            • 8413
                            • Grand Junction, Colorado

                            #14
                            Originally posted by jetmechmarty
                            Thanks Motoman. I'm going to make sure the correct needles are installed this evening. I'll have to put it away for a couple of days.

                            I should see 5GL16 with a magnifying glass?
                            Yeppers, have to use one myself in order to see that embossed designation on side of pilot jets near the top portion of jet.
                            81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                            Comment

                            • motoman
                              Master of XSology
                              • Aug 2005
                              • 8413
                              • Grand Junction, Colorado

                              #15
                              Apologize, meant metering rods, not pilot jets.
                              81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

                              Comment

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