Gs750 petcocks

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  • chuck hahn
    Forum LongTimer
    Past Site Supporter
    • May 2009
    • 25918
    • Norman, Oklahoma

    #1

    Gs750 petcocks

    I usually put the 77 thru 79 750 petcocks on my 1000s and was just on fleabay looking. The OEM ones are around 97ish from Suzuki. Anyway i came across what looks like a flood of cheap cheap cheap petcocks. Heres one i chose to paste. Anyone heard of these differing brands and of thier reliability?


    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.
  • Grimly
    Forum Guru
    Past Site Supporter
    Super Site Supporter
    • Sep 2012
    • 5761
    • Ireland

    #2
    Yep, they're rubbish. They don't seal off when the vacuum is removed because of the weak spring inside.
    Dave
    '79 GS850GN '80 GS850GT
    Only a dog knows why a motorcyclist sticks his head out of a car window

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    • oldGSfan
      Forum Sage
      Past Site Supporter
      • Jul 2018
      • 1319
      • Southern California

      #3
      I just got a new one for my GS1100E, was 90 but oddly it's up to 108 now that I checked back on the Partzilla site. Ouch. After reading all the issues with copies I just went for it and got the original. But I forgot to get new seals for the attachment bolts, dang.
      Tom

      '82 GS1100E Mr. Turbo
      '79 GS100E
      Other non Suzuki bikes

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      • Gorminrider
        Forum Sage
        Past Site Supporter
        • Aug 2012
        • 4803
        • British Columbia, Canada

        #4
        I found the same issue as Grimly had with my Ebay "cheapo"(bought last year)

        I thought maybe swap a spring in from an old petcock but it wasn't the same diameter and wouldn't fit in the space allocated for it.

        I have to be a little suspicious when so many get dumped on ebay. Perhaps the manufacturer dumped the lot cheap because of a defect.
        Last edited by Gorminrider; 05-02-2020, 08:44 AM.

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