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Can you identify Mikuni Carbs, BS32?

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    #1

    Can you identify Mikuni Carbs, BS32?

    When I purchased my 1980 GS1000G this set of carbs came along with the deal. I was told they were 1980 GS1000G carbs. Well they are not like my 1980 GS1000G carbs. Two things I noticed. One they are smaller, my guess is that since mine are BS34 these may be BS32. The other thing I noticed was that the spacing between 1&2 and 3&4 are like mine but the spacing between 2&3 are about 1/4" closer than mine. One other thing (I know I said two) the choke cable is clamp on where mine is bold on. Before I list these on eBay would like to have a better description of what they might be from since they do not appear to be from a 1980 GS1000G. Thanks


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    #2
    Those are off a 550 or 650. Measure the inside diameter of the intake side of the carbs and they should measure 32mm.
    They will not work on your 1000.
    1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
    1985 GS1150ES stock with 85 Red E bodywork.

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      #3
      They do look to be 1980 to 1981 era CV carbs based on the choke linkage, but I don't think they are 1980 GS1000 carbs. My reasoning is that the butterflies are marked 135 while my 1980 BS34SS carbs are marked 140 and my BS32SS carbs are marked 130. They should also have 4 openings on the air inlet side as apposed to the two on those. Measure the engine side inside opening and see if they are 34mm or something else.
      Last edited by JTGS850GL; 03-03-2014, 10:18 PM.
      http://img633.imageshack.us/img633/811/douMvs.jpg
      1980 GS1000GT (Daily rider with a 1983 1100G engine)
      1998 Honda ST1100 (Daily long distance rider)
      1982 GS850GLZ (Daily rider when the weather is crap)

      Darn, with so many daily riders it's hard to decide which one to jump on next.;)

      JTGS850GL aka Julius

      GS Resource Greetings

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        #4
        The carbs will have a part number on the side, just below the top cover, check for it and post it.

        Check this post, it has some good info here.

        Are these carbs off a GS1000 and if so, which model? - The GSResources Forums
        http://www.thegsresources.com/_forum/showthread.php?t=214083
        Place your GS carburetor, fuel or exhaust questions in this forum.


        Last edited by Kiwi Canuck; 03-03-2014, 10:50 PM. Reason: added link to thread
        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,

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          #5
          No numbers

          Could not find any numbers on the carbs in question. I was able to find them on my GS1000. It has a set of 49150 - C033 on one side and 49150 - C034 on the other. Measuring the input with a steel ruler in inches and doing the conversion these carbs are 32mm ID on the intake side.

          I am aware these carbs will not work on my GS1000, thus the reason to want to sell them. Can't even use parts from these carbs as the bowls, top caps etc are smaller than my carbs. Just looking to try to identify as best as possible for the next owner.

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            #6
            can you make the pictures smaller...please

            say 800X600

            would be much appreciated

            Comment

              #7
              Originally posted by chef1366 View Post
              Those are off a 550 or 650. Measure the inside diameter of the intake side of the carbs and they should measure 32mm.
              They will not work on your 1000.
              #32 13551-47090
              .VALVE, THROTTLE (135)

              Looks like Bill is correct.
              De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

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

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                #8
                What does the inside of those bowls look like?
                No seaweed?
                1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
                1985 GS1150ES stock with 85 Red E bodywork.

                Comment

                  #9
                  Thanks for all your help

                  Thank you everyone for your help! Pretty clean on the inside too. I have all the pilot plugs. I took them out thinking they may work on my BS34s in the background but no such luck.

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                    #10
                    I have 10 of those they look like the BS 32s to me and mine go with a 1981 gs550

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