Will '78 GS750 carbs/assembly fit a '79 GS1000?

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  • Himble
    Forum Apprentice
    • Feb 2018
    • 91
    • Perth, Western Australia

    #1

    Will '78 GS750 carbs/assembly fit a '79 GS1000?

    I have a set of refurbished carbs (complete in rack) which I advertised for sale.
    A guy wants to know if they would physically fit a '79 GS1000?
    I don't know, perhaps someone here does?
    TIA.
    Cheers, Andy

    Current bikes... 78 GS750E, 72 CB500K1
    Previously owned...
    01 VFR800Fi, 67 Honda Sports 90
    71 Yamaha 175 CT2, 73 Yamaha RD250 (great bike!), 79 Yamaha XT250T
    75 Kawasaki KX125 (little screamer!)
    BMW R65, BMW R80, BMW R100LT
  • Guest

    #2
    They will bolt up but the brass will be different. Main jet, needle clip position and the emulsion tubes are different so your buyer may need to change those around.
    Last edited by Guest; 04-18-2021, 03:28 AM.

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    • Himble
      Forum Apprentice
      • Feb 2018
      • 91
      • Perth, Western Australia

      #3
      Originally posted by mattd1205
      They will bolt up but the brass will be different. Main jet, needle clip position and the emulsion tubes are different so your buyer may need to change those around.
      Thanks for that Matt! I didn't know if they'd bolt up or not. Re the brass, yep mains, needle and emulsion will need changing.
      Cheers, Andy

      Current bikes... 78 GS750E, 72 CB500K1
      Previously owned...
      01 VFR800Fi, 67 Honda Sports 90
      71 Yamaha 175 CT2, 73 Yamaha RD250 (great bike!), 79 Yamaha XT250T
      75 Kawasaki KX125 (little screamer!)
      BMW R65, BMW R80, BMW R100LT

      Comment

      • zed1015
        Forum Mentor
        • Oct 2020
        • 413
        • North Lincolnshire - UK .

        #4
        The VM26SS and VM28SS racks are physically the same carbs with the same spacing on the GS750 and 1000. (also fits Kawasaki Z9/1000).
        The Suzuki have both air and fuel mix screws whereas the kwaks only have either one or the other.
        The 750 carbs will work on the 1000 with just an increase of main jet.
        To convert totally to 1000 jetting a GS1000 carb rebuild kit from Keyster will do the job.
        Mikuni Viton Choke Plunger Seat Renewal.
        VITON Choke plunger seals .KAWASAKI Z1,Z900,Z650,Z1000,Z1R,SUZUKI GS1000,GSXR,RF | eBay

        Air Corrector Jets for Mikuni VM 24, 26 and 28mm carbs .
        https://www.ebay.co.uk/itm/254380193...84.m1555.l2649



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        • Himble
          Forum Apprentice
          • Feb 2018
          • 91
          • Perth, Western Australia

          #5
          Originally posted by zed1015
          The VM26SS and VM28SS racks are physically the same carbs with the same spacing on the GS750 and 1000. (also fits Kawasaki Z9/1000).
          The Suzuki have both air and fuel mix screws whereas the kwaks only have either one or the other.
          The 750 carbs will work on the 1000 with just an increase of main jet.
          To convert totally to 1000 jetting a GS1000 carb rebuild kit from Keyster will do the job.
          Thanks zed! I have no idea at this point whether the prospective buyer is rebuilding a stock 1000 or something else....
          At the end of the day, it's his choice and I'm in no hurry to sell.
          Last edited by Himble; 04-18-2021, 05:26 AM.
          Cheers, Andy

          Current bikes... 78 GS750E, 72 CB500K1
          Previously owned...
          01 VFR800Fi, 67 Honda Sports 90
          71 Yamaha 175 CT2, 73 Yamaha RD250 (great bike!), 79 Yamaha XT250T
          75 Kawasaki KX125 (little screamer!)
          BMW R65, BMW R80, BMW R100LT

          Comment

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