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1978 GS1000E Fuel Petcock - Conversion?

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    1978 GS1000E Fuel Petcock - Conversion?

    Folks,

    I've done my searching - I know new petcocks are expensive and the K&L rebuild kits are rumored to not work well.

    I read on the forum that some people are using a petcock from A GS750 - does anyone know the part # or the model year of the 750 that this petcock came from?

    Mine isn't leaking, but after 35 years, I can't assume that it will work forever. My bike has the VM carbs.
    Cogito ergo sum - "I think, therefore I am"
    René Descartes

    #2
    From Boulivard Suzuzki parts finder fuel cocks

    GS750 44300-45011 82.78
    GS1000 44300-44011 267.29

    If they were interchangeable the part number would be the same.
    I'm not sure of the spacing of the mounting bolts on the 750 vs the 1000.
    http://i632.photobucket.com/albums/u...00080021-1.jpg
    1978 GS1000C
    1979 GS1000E
    1980 GS1000E
    2004 Roadstar

    Comment


      #3
      I know the petcocks are physically different - the vacuum and fuel hose nipples are in different locations.

      However, if the fuel and vacuum lines are extended, will a petcock from a 750 work? If so, what year?
      Cogito ergo sum - "I think, therefore I am"
      René Descartes

      Comment


        #4
        Originally posted by philosopheriam View Post
        I know the petcocks are physically different - the vacuum and fuel hose nipples are in different locations.

        However, if the fuel and vacuum lines are extended, will a petcock from a 750 work? If so, what year?
        PM Chuck Hahn, he has experience in this area, 750 petcocks on 1000's that is.
        sigpic
        Steve
        "The world is a book, and those who do not travel read only one page." :cool:
        _________________
        '79 GS1000EN
        '82 GS1100EZ

        Comment


          #6
          Originally posted by philosopheriam View Post
          Folks,

          I've done my searching - I know new petcocks are expensive and the K&L rebuild kits are rumored to not work well.

          I read on the forum that some people are using a petcock from A GS750 - does anyone know the part # or the model year of the 750 that this petcock came from?

          Mine isn't leaking, but after 35 years, I can't assume that it will work forever. My bike has the VM carbs.
          Well, since it is working, just pull out the handle and replace the disc and the O ring and go from there
          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


            #7
            Originally posted by sedelen View Post
            PM Chuck Hahn, he has experience in this area, 750 petcocks on 1000's that is.
            Thank you, sir!
            Cogito ergo sum - "I think, therefore I am"
            René Descartes

            Comment


              #8
              As i stated when I replied to his pm...78 and 79 750 petcocks are the exact same body and bolt spacing as the 78 1000 C and Es are. Only thing is the way the nipples face, but the lines hook up without any pinching. And as was stated above...about less than half what a 1000 costs.
              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


                #9
                Originally posted by chuck hahn View Post
                As i stated when I replied to his pm...78 and 79 750 petcocks are the exact same body and bolt spacing as the 78 1000 C and Es are. Only thing is the way the nipples face, but the lines hook up without any pinching. And as was stated above...about less than half what a 1000 costs.
                A guy sold me an "original" GS 1000 C petcock that looked very similar to the original but...it interfers with the side of the tank
                Could it be a GS 750 petcock?
                sigpicJohn Kat
                My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
                GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020

                Comment


                  #10
                  Originally posted by John Kat View Post
                  A guy sold me an "original" GS 1000 C petcock that looked very similar to the original but...it interfers with the side of the tank
                  Could it be a GS 750 petcock?
                  This is a very poor example of a '78/'79 GS1000C/EC/N/EN/S petcock.
                  The vacuum tube on the left points about the 10 o'clock point, and the fuel line comes out about the 3 o'clock point.
                  sigpic
                  Steve
                  "The world is a book, and those who do not travel read only one page." :cool:
                  _________________
                  '79 GS1000EN
                  '82 GS1100EZ

                  Comment


                    #11


                    (NOTE*** it has an incorrect screen for a 1978 model)
                    De-stinking Penelope http://thegsresources.com/_forum/sho...d.php?t=179245

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

                    Comment


                      #12
                      Here's a few good shots





                      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


                        #13
                        I will have a close look at mine tomorrow and I'll post pictures
                        sigpicJohn Kat
                        My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
                        GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020

                        Comment


                          #14
                          Dale...if anyone concerned with the telescopic screen slight difference ( which I havent really noticed it ) they can simply switch it out. Point is that its the same body, same bolt spacing, same drop from the tank bottom and noone would ever know unless they looked at the nipples. And your at half the price too boot.
                          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


                            #15
                            Here's the petcock I bought thinking it would fit my GS 1000 C
                            Is this the one from a GS 750?
                            Apparently not from the pictures I've seen.
                            It sure does interfere with the side of the tank!
                            In any case this type of petcock is incompatible with the later GS 1000's fitted with BS carbs and original air box...


                            Last edited by John Kat; 10-29-2013, 10:04 AM.
                            sigpicJohn Kat
                            My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
                            GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020

                            Comment

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