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ok to rebuild petcock or is replacement always necessary ?

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    #1

    ok to rebuild petcock or is replacement always necessary ?

    Hi everyone

    While waiting on my parts to arrive for my centerstand I am considering what else to fix and in what order on my new-to-me 1979 suzuki gs8850g

    I am fairly certain the petcock needs either rebuilding or replacing (the previous owner has a bolt blocking an air vent and the bike arrived to me with the petcock set on prime)

    I read the really long thread about top mistakes by new owners and one of them listed not buying a new petcock.

    Is there any particular valid reason not to buy a rebuild kit and just rebuild the existing petcock on the bike ?

    (Its one of the original petcocks using vacuum with the hoses facing forward.)

    I would rather spend $20.00 on a rebuild kit and take some time to fix the existing one than pay 100.00 for a new one.
    Tags: None
    #2
    not many people have had very good results with a rebuild kit. you could spend 20 bucks on a rebuild kit only to find it still wont work properly.
    a new petcock from Z1 is a lot less than $100 and are good quality replacements.
    Buy a new one and be done with it.
    1978 GS1085.

    Just remember, an opinion without 3.14 is just an onion!

    Comment

      #3
      checked z1 do not see petcock only rebuild kits

      when I check z1 I only see rebuild kits not petcocks.

      Comment

        #4
        Find a new one on Ebay or from one of the vintage supply houses that someone will surely suggest. Your gonna have maybe a 15 to 20 % chance of any rebuild kit actually working ( or stay working for very long anyway ).
        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
          sorry, i thought Z1 sold them as Chuck says, check out some vintage suppliers.
          1978 GS1085.

          Just remember, an opinion without 3.14 is just an onion!

          Comment

            #6
            Heres the list of bikes the part number crosses to..

            Still available according to Alpha Sports....

            Suzuki Motorcycle OEM Parts Catalog - Alpha Sports
            http://www.alpha-sports.com/suzuki_parts.htm?q=suzuki-parts
            Buy parts at a low price for your snowmobile here at Alpha Sports, we carry a LARGE variety of parts and accesories.


            1979 SUZUKI GS750EN - FUEL COCK
            1979 SUZUKI GS750N - FUEL COCK
            1979 SUZUKI GS850GN - FUEL COCK
            1980 SUZUKI GS1000GT - FUEL COCK
            1980 SUZUKI GS850GT - FUEL COCK
            1981 SUZUKI GS1000GX - FUEL COCK
            1981 SUZUKI GS850GX - FUEL COCK
            Last edited by chuck hahn; 05-31-2014, 12:53 PM.
            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

              #7
              Georgefix on e-bay. Good prices and they are identical to OEM. As a matter of fact I think they are.....
              Old age and treachery will beat youth and skill every time1983 GS 750
              https://c1.staticflickr.com/5/4256/3...8bf549ee_t.jpghttps://c1.staticflickr.com/5/4196/3...cab9f62d_t.jpg

              Comment

                #8
                Just typed in GS PETCOCK on Ebay and got 571 entries...do some searching and use the list I provided.
                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
                  If the diaphragm isn't torn I have had decent luck with just replacing the little O ring on the vacuum diaphragm. The one that actually shuts off the fuel. The problem with the kits is the o rings and the metal pin it goes no is not the right diameter.

                  But really just get a new one, it's silly to even mess around with it.
                  http://img.photobucket.com/albums/v5...tatesMap-1.jpg

                  Life is too short to ride an L.

                  Comment

                    #10
                    Yes a device that sits less than a foot from your crotch and can spew flamable liquid all over you leg. Nothing to fiddle with really.

                    I even bought one and I am the cheapest person on this site.
                    A new one that is OEM from parts outlaw.

                    There is a really nice write up for the rebuild of a Yamaha petcock somewhere out there.
                    The writer uses a cone shaped fob on a dremel to polish the seating area where the o-ring seals off the fuel flow. I did this with success but my internal spring was bent so I just got a new petcock as I had to remove the spring and forego having a PRI setting.
                    Last edited by Guest; 05-31-2014, 01:51 PM.

                    Comment

                      #11
                      Yep, tried and failed on the rebuild. New is really the only way to go.
                      http://img633.imageshack.us/img633/811/douMvs.jpg
                      1980 GS1000GT (Daily rider with a 1983 1100G engine)
                      1998 Honda ST1100 (Daily long distance rider)
                      1982 GS850GLZ (Daily rider when the weather is crap)

                      Darn, with so many daily riders it's hard to decide which one to jump on next.;)

                      JTGS850GL aka Julius

                      GS Resource Greetings

                      Comment

                        #12
                        What's the bolt spacing on yours as Z1 has two 44m and a 50mm petcock on their site plus several pingels
                        Cowboy Up or Quit. - Run Free Lou and Rest in Peace

                        1981 GS550T - My First
                        1981 GS550L - My Eldest Daughter's - Now Sold
                        2007 GSF1250SA Bandit - My touring bike

                        Sit tall in the saddle Hold your head up high
                        Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
                        and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"

                        Comment

                          #13
                          I bought a rebuilt few years back, it was a complete waste of money.
                          Marc
                          https://www.thegsresources.com/_foru...ie_twisted.gif AIR COOLED MONSTERS NEVER DIE https://www.thegsresources.com/_foru...ie_twisted.gif
                          1978 GS1000C X2
                          1978 GS1000E X2
                          1979 GS1000S
                          1979 gs1000
                          1983 gs400e

                          Comment

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