'79 1000S carb help

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  • 1000SMike
    • Jan 2026

    #1

    '79 1000S carb help

    I'm restoring a 1000S & have installed a Vance & Hines 4 into 1 exhaust. Considering a carb upgrade rather than just re-jet. Any advice/experience would be greatly appreciated. Certainly willing to invest in a great set of carbs. TIA
  • Nessism
    Forum LongTimer
    GSResource Superstar
    Past Site Supporter
    Super Site Supporter
    • Mar 2006
    • 35787
    • Torrance, CA

    #2
    VM29 "smoothbores" are the period correct mod. Figure on spending about $700 for a nice set after all is said and done. Get some real K&N pods too. Or maybe those sold by APE. Jetting is always an adventure, but there should be some people that can help in that regards. I think there are newer carbs as well, RS34's maybe, but I'm not overly familiar with them and will defer to others for those recommendations.
    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

    • Frank Z.
      Forum Sage
      Past Site Supporter
      • Sep 2009
      • 1458
      • Austin, TX

      #3
      Mikuni VM29 smooth bores would be very proper.

      (edit: what Ed said...)
      '80 GS1000ST
      '92 ZX-11
      Past rides: '79 GS1000SN, '84 GPZ900R

      http://totalrider.com/

      Comment

      • Vmass
        Forum Guru
        Past Site Supporter
        • Apr 2011
        • 6100
        • Massachusetts

        #4
        Here is a pricey set on eBay: http://www.ebay.com/itm/Mikuni-VM29-...648a4a&vxp=mtr

        Comment

        • Frank Z.
          Forum Sage
          Past Site Supporter
          • Sep 2009
          • 1458
          • Austin, TX

          #5
          Originally posted by Vmass
          Seller is "wiredgeorge"... isn't he a member here?
          '80 GS1000ST
          '92 ZX-11
          Past rides: '79 GS1000SN, '84 GPZ900R

          http://totalrider.com/

          Comment

          • Nessism
            Forum LongTimer
            GSResource Superstar
            Past Site Supporter
            Super Site Supporter
            • Mar 2006
            • 35787
            • Torrance, CA

            #6
            Originally posted by Frank Z.
            Seller is "wiredgeorge"... isn't he a member here?
            Hope not, since his carb jobs get bashed regularly.
            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

            • Guest

              #7
              If it is, stay very far away. He did a set for me that was terrible. They were never right and as I learned more I realized all the pilot fuel seats were quite damaged. I ended up trashing all four carburetor bodies. I paid good money for the job, sent him a good set of core carburetors and got back trash. It was a very expensive lesson in how to rebuild my own carburetors. He should stick with his Harley.
              Last edited by Guest; 07-13-2014, 08:29 PM.

              Comment

              • 1000SMike

                #8
                I saw the set on fleabay & didn't think they were priced to sell. Certainly appreciate the guidance & will begin looking into a set for appropriate $. May investigate a new set right from SUDCO.

                Comment

                • 1000SMike

                  #9
                  Another question, if I do go with VM29s will the stock carb boots mounted to the head still work?

                  Comment

                  • Big T
                    Forum LongTimer
                    Past Site Supporter
                    Super Site Supporter
                    • Mar 2005
                    • 12391
                    • West Slope, OR

                    #10
                    Yes, if your boots are flexible enough

                    The KZ boots are better, but $$$$$
                    1978 GS 1000 (since new)
                    1979 GS 1000 (The Fridge, superbike replica project)
                    1978 GS 1000 (parts)
                    1981 GS 850 (anyone want a project?)
                    1981 GPZ 550 (backroad screamer)
                    1970 450 Mk IIID (THUMP!)
                    2007 DRz 400S
                    1999 ATK 490ES
                    1994 DR 350SES

                    Comment

                    • 1000SMike

                      #11
                      Boots are brand new so I hope they'll be fine. Thanks for the guidance.

                      Comment

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