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    #1

    GS1000G carb questions

    I finally got my engine sorted from a previous owners complete balls up,
    So now I know my GS was bored to 3,5mm oversize Giving a 1085cc capacity,
    My question is to anyone who runs a big bore kit on their bike is what jet sizes are you running?
    As far as I can tell mine has standard jets in the carbs, (112.5main jet) and it seem to run lean over 5000 revs,
    I have a 4 into 1 pipe and standard airbox
    Any info would be greatly appreciated
    Tags: None
    #2
    what year? Go to PARTSHARK and follow the prompts for parts fiches. go here for sevice manuals.

    BikeCliff's Website
    https://gsarchive.bwringer.com/
    Suzuki GS motorcycles maintenance and information (GS850GT)
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

    Comment

      #3
      Seeing its bored over i would start a size over on the main. If its still lean go another size up. Are we to assume it starts and idles fine??
      MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
      1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

      NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


      I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

      Comment

        #4
        The stated year on the documents is 1984 but as far as I know they weren't in production by then

        Comment

          #5
          it does start and idles ok but is a bit rich on idle, i can play with the air screws and sort that out.
          my biggest problem is getting jets. im over a hundred miles from the nearest bike shop so wanted to pick peoples brains on what they found works for them

          Comment

            #6
            ...........................

            Keihin, Dynojet, Mikuni Jet Size Cross Reference Tech
            https://www.jockeyjournal.com/threads/keihin-dynojet-mikuni-jet-size-cross-reference-tech.64769/
            MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
            1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

            NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


            I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.
            • Likes 1

            Comment

              #7
              so according to the GS1000G parts catalogue the main jet should be a115. I'll have to see if I can find anyone who sells online

              Comment

                #8
                Try z1 enterprises. Any of the online parts fiche places you can order from too.
                Last edited by chuck hahn; Yesterday, 01:10 PM.
                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                Comment

                  #9
                  I doubt if they ship to South Africa

                  Comment

                    #10
                    well nothing to loose by asking.
                    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                    Comment

                      #11
                      that's true ...

                      Comment

                        #12
                        send some emails to them explaining your location and ask about international shipping. Wont be cheap but when you need it you bite the bullet
                        MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                        1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                        NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                        I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                        Comment

                          #13
                          I buy a bit of stuff from https://www.motorcyclespareswarehouse.com.au/

                          They ship internationally and prices are quite reasonable
                          Current Bikes
                          1980 Suzuki GS 1000G
                          1973 Suzuki GT 185 (The tiddler)
                          "Live to die, die to live"

                          Comment

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