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Are these carbs off a GS1000 and if so, which model?

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    #1

    Are these carbs off a GS1000 and if so, which model?

    I bought a spare set of 1980 GS1000 carbs on ebay a while back and started to strip them down today when I noticed a few differences compared to the set from my GS1000S I just rebuilt.

    One of my carbs has a piece broken and wanted to replace one of the carbs with one of these, will these work OK on my GS1000S? or are they a different setup?

    First thing I noticed was the different bracket, rather than the wire used to keep the clutch cable in place.



    Also the screen on the bottom of the needle valve is flat, not like the little dome on the other set.



    Number etched on the side is 49150 and C032 below, my ones have 49100 I believe.



    Side views,



    More pictures,








    Any comments welcome.
    2018 Honda Africa Twin AS
    2013 DR 650 Grey, sold 1981 GS 650E Silver,
    1980 GS1000ST Blue & White, X2
    2012 DL650 Vstrom Foxy Orange, in storage
    1981 CT110 X2 "Postie Bikes" Gone to a New Home.
    2002 BMW 1150 GS Blue & White - Sold
    1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
    1982 BMW R100 Africa trip, Stolen - Recovered- Sold
    1977-1980 Suzuki GS550, GS1000E, GS1000S GSX750, GSX1100,s
    Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,
    Tags: None
    #2
    49150 is the callout for 1980 GS1000G carbs per the alpha sports web site.
    De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

    http://www.thegsresources.com/_forum...35#post1625535

    Comment

      #3
      Edit: Dale above posted while I was typing.

      David, those carbs look like the ones from a 1100G, and the float needle seat looks aftermarket. Check the jets against the 1000S to see if they will work. I think there is a difference in one of the air jets, but not sure if that matters or not.
      Ed

      To measure is to know.

      Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

      Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

      Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

      KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

      Comment

        #4
        Looking at the list of numbers that I have, the 49160 is from an '81 1000G, so it's quite possible that the 49150 was from the '80.

        .
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        mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
        hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
        #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
        #2 son: 1980 GS1000G
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        Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
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        Comment

          #5



          Last edited by rustybronco; 09-28-2013, 07:46 PM.
          De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

          http://www.thegsresources.com/_forum...35#post1625535

          Comment

            #6
            Looks like they are from a GS1000GT

            Thanks for the help with these, so now that I know they are from the 1980 GS1000G, can I still use them?
            I can change the main jets to 107.5's and swap out any other jets to match what is in the existing ones, but will they work properly? anyone have experience with these units?
            If not I will rebuild them and put them back up for sale.
            2018 Honda Africa Twin AS
            2013 DR 650 Grey, sold 1981 GS 650E Silver,
            1980 GS1000ST Blue & White, X2
            2012 DL650 Vstrom Foxy Orange, in storage
            1981 CT110 X2 "Postie Bikes" Gone to a New Home.
            2002 BMW 1150 GS Blue & White - Sold
            1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
            1982 BMW R100 Africa trip, Stolen - Recovered- Sold
            1977-1980 Suzuki GS550, GS1000E, GS1000S GSX750, GSX1100,s
            Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,

            Comment

              #7
              Those look just like my Mikuni BS32SS's but mine don't have the broken housing on the pilot screw hole.

              Last edited by Guest; 09-28-2013, 08:50 PM.

              Comment

                #8
                And I did notice the metal washer for between the mixture screw spring and the oring isnt in the picture of the screw.
                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
                  Go to the alpha sports site, look up the various jets, needle jets, needles ect and compare the numbers listed. For instance, on the GS1000ST carbs item #40 is p/n 09494-00273 and is a X-7 (jet, needle). The jet, needle for the GS1000GT carbs is an X-6

                  I can think of no reason they would not work if all the internals are the correct pieces.
                  Last edited by rustybronco; 09-28-2013, 08:55 PM.
                  De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

                  http://www.thegsresources.com/_forum...35#post1625535

                  Comment

                    #10
                    Originally posted by OriginalOwner View Post
                    Those look just like my Mikuni BS32SS's.

                    Except for the throat diameters, they are similar.
                    De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

                    http://www.thegsresources.com/_forum...35#post1625535

                    Comment

                      #11
                      Originally posted by chuck hahn View Post
                      And I did notice the metal washer for between the mixture screw spring and the oring isnt in the picture of the screw.
                      Chuck, the metal washer is there, just stuck onto the rubber oring.
                      2018 Honda Africa Twin AS
                      2013 DR 650 Grey, sold 1981 GS 650E Silver,
                      1980 GS1000ST Blue & White, X2
                      2012 DL650 Vstrom Foxy Orange, in storage
                      1981 CT110 X2 "Postie Bikes" Gone to a New Home.
                      2002 BMW 1150 GS Blue & White - Sold
                      1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
                      1982 BMW R100 Africa trip, Stolen - Recovered- Sold
                      1977-1980 Suzuki GS550, GS1000E, GS1000S GSX750, GSX1100,s
                      Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,

                      Comment

                        #12
                        Originally posted by OriginalOwner View Post
                        Those look just like my Mikuni BS32SS's but mine don't have the broken housing on the pilot screw hole.

                        I noticed that too when I pulled them apart, only cosmetic and I may be able to use JB weld to build it up to make it look like new.
                        2018 Honda Africa Twin AS
                        2013 DR 650 Grey, sold 1981 GS 650E Silver,
                        1980 GS1000ST Blue & White, X2
                        2012 DL650 Vstrom Foxy Orange, in storage
                        1981 CT110 X2 "Postie Bikes" Gone to a New Home.
                        2002 BMW 1150 GS Blue & White - Sold
                        1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
                        1982 BMW R100 Africa trip, Stolen - Recovered- Sold
                        1977-1980 Suzuki GS550, GS1000E, GS1000S GSX750, GSX1100,s
                        Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,

                        Comment

                          #13
                          Eric emailed this response



                          Those carbs will work just fine if he swaps over all of the jets from the other set.
                          The big item to look out for is the location of the idle screw and if it interferes with the cam chain tensioner.
                          Another thing to look out for is the choke linkage. Is it for left hand control or through the steering stem?
                          Those can be swapped also.
                          The flat metal piece serves the same purpose as the wire retainer. It keeps the clutch cable out of the carb linkage.


                          Eric
                          No signature :(

                          Comment

                            #14
                            Thats good..things are a pain to find sometimes. Stick them to a piece of masking tape as you disassemble things.
                            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

                              #15
                              Originally posted by rustybronco View Post
                              Go to the alpha sports site, look up the various jets, needle jets, needles ect and compare the numbers listed. For instance, on the GS1000ST carbs item #40 is p/n 09494-00273 and is a X-7 (jet, needle). The jet, needle for the GS1000GT carbs is an X-6

                              I can think of no reason they would not work if all the internals are the correct pieces.
                              I just realized my carb with the broken piece does not have the recessed fuel mixture screw and I want them to match on the Canadian Cooley so I will need to use them as a full set.
                              I will see if I can buy the correct jets if the cost is not too bad, otherwise I will have a set of rebuilt GS1000G carbs for sale.

                              Thanks for your help Dale, good to get such great help so quickly, this forum rocks.
                              2018 Honda Africa Twin AS
                              2013 DR 650 Grey, sold 1981 GS 650E Silver,
                              1980 GS1000ST Blue & White, X2
                              2012 DL650 Vstrom Foxy Orange, in storage
                              1981 CT110 X2 "Postie Bikes" Gone to a New Home.
                              2002 BMW 1150 GS Blue & White - Sold
                              1975 BMW R90/6 Black - Sold 1984 GS1150EF Sold
                              1982 BMW R100 Africa trip, Stolen - Recovered- Sold
                              1977-1980 Suzuki GS550, GS1000E, GS1000S GSX750, GSX1100,s
                              Hondas ST90, CR125 CB175 , CB350 CB750, NSU Quickly, Yamaha RD's 350/400,

                              Comment

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