42mm od carbs to mount, which rubbers?

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  • jellywrestler
    • Jan 2026

    #1

    42mm od carbs to mount, which rubbers?

    hi folks, i'm putting together a historic GS1000R race bike which has 42mm outside diameter mikuni carbs. does anyone know what sort of carb rubbers might be suitable?
  • chuck hahn
    Forum LongTimer
    Past Site Supporter
    • May 2009
    • 25918
    • Norman, Oklahoma

    #2
    Iis this the measurement at the engine side? Whats the ID and the OD there??? VM or CV carbs? Pics will help a lot also.
    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.

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    • jellywrestler

      #3
      yip engine, 42mm outside diameter of carbs

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      • Fjbj40
        Forum Sage
        • Oct 2012
        • 1221
        • Dartmouth Nova Scotia

        #4
        Have a look at Sudco catalog, you are looking for Mikuni manifolds.
        1978 Gs1085 compliments of Popy Yosh, Bandit 1200 wheels and front end, VM33 Smoothbores, Yosh exhaust, braced frame, ported polished head :cool:
        1983 Gs1100ESD, rebuild finished! Body paintwork happening winter 2017:D

        I would rather trust my bike to a technician that reads the service manual than some backyardigan that THINKS HE KNOWS how to fix things.

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        • sharpy

          #5
          you on FB or anything. love a few pics to look at if its a 1000r thanks

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          • Guest

            #6
            Trojans, very flexible. LMAO, sorry had too.

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            • jellywrestler

              #7
              Originally posted by sharpy
              you on FB or anything. love a few pics to look at if its a 1000r thanks
              here she is that's hand beaten three mm alloy plate
              Attached Files

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              • jellywrestler

                #8
                an example of the drilling Pop's Yoshimuras wife did on the motor
                Attached Files

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