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    Missing Aluminum Carburetor Plug

    Hello all!

    Long time lurker and new poster. First off, this forum has been amazingly helpful for getting a 1981 GS850G that I stumbled upon owning into a more functional state. Special thanks to BikeCliff and his manuals!

    I recently had a co-worker ultrasonic clean my carburetors (Mikuni BS32SS) and as you can see in my picture link (sorry, couldn't seem to upload the pictures), I am missing one of the aluminum "plugs?" from the unit. I for the life of me cannot find an official name for this part or a part number so I can see about replacing it and it would be amazingly helpful if someone could point me in the right direction. I work in IT and consider myself a pretty great Googler... but I have reach my limit on this.

    Discover the magic of the internet at Imgur, a community powered entertainment destination. Lift your spirits with funny jokes, trending memes, entertaining gifs, inspiring stories, viral videos, and so much more from users like Miltor.

    #2
    Buy used carb body and hacksaw it apart to extract the plug. That's the only way I know to get a plug, other than making one on a lathe.
    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


      #3
      Posting full size pictures isn't that hard. You already have an Imgur account. Just a few extra steps. See link in my signature. If you see a button on the screen near the bottom right that looks like this , mouse over that and change to old design. Follow the steps in my link in post #6. Important part is you need to copy the BBCode and paste that into your post here in the forum.


      Rich
      1982 GS 750TZ
      2015 Triumph Tiger 1200

      BikeCliff's / Charging System Sorted / Posting Pics
      Destroy-Rebuild 750T/ Destroy-Rebuild part deux

      Comment


        #4
        It's just a plug from when they drilled the carb passages...nothing special. Long as it doesn't dissolve in gas you can make one out of anything.
        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


          #5
          This thread may interest you.

          Edit - i see Chuck beat me to it.
          Agree, i would not worry about it.
          Rijk

          Top 10 Newbie Mistakes thread

          CV Carb rebuild tutorial
          VM Carb rebuild tutorial
          Bikecliff's website
          The Stator Papers

          "The thing about freedom - it's never free"

          Comment


            #6
            Looking at the hole, and shape of the plug, maybe it is
            an option to tap thread in the carb body - looks like there's
            enough meat to tap a thread on the smaller part of the hole.
            Behead a bolt and saw a slit in the top for a screwdriver,
            and use some rtv on the thread.

            If that works you have a good seal and also a way to level
            out the surface without the need for an o-ring.

            Dunno if that's viable, just food for thought.
            Last edited by Rijko; 09-15-2021, 02:25 PM.
            Rijk

            Top 10 Newbie Mistakes thread

            CV Carb rebuild tutorial
            VM Carb rebuild tutorial
            Bikecliff's website
            The Stator Papers

            "The thing about freedom - it's never free"

            Comment


              #7
              The plug is tapered and wedges into the hole in the carb body. You do NOT want the plug coming loose and falling into the carb throat where it will get sucked into the engine.
              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


                #8
                Thanks for the input everyone! It's unfortunate that one cannot simply purchase these plugs, but it's good to know I have options. I'll do my best to reply to this thread once I come up with a solution.

                Thanks!

                Comment


                  #9
                  Welch plug a dime a dozen
                  Google mikuni welch plug
                  Last edited by Cipher; 09-15-2021, 04:59 PM.
                  1983 GS 550 LD
                  2009 BMW K1300s

                  Comment


                    #10
                    Originally posted by Cipher View Post
                    Welch plug a dime a dozen
                    Google mikuni welch plug
                    Yep, welch plug. They use them on small engine carbs (string trimmers, blowers, etc.) also.

                    Comment

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