RS carbs

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  • tbirdhd
    • Feb 2026

    #1

    RS carbs

    Hi all , when useing RS carbs on a street bike , is it best to use a dual or single petcock ??
  • pano
    Forum Sage
    GSResource Superstar
    Past Site Supporter
    • Apr 2003
    • 1818
    • MA

    #2
    I have RS 36 carbs and use a stock single petcock with no issues. . I have never seen anyone with dual petcocks.
    1982 GS1000S Katana
    1982 GS1100E

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    • GregT
      Forum Sage
      • Jul 2009
      • 3541
      • New Zealand

      #3
      Originally posted by pano
      I have RS 36 carbs and use a stock single petcock with no issues. . I have never seen anyone with dual petcocks.
      Single is fine for road use. Twin are sometimes needed for roadracing. At Philip Island, a lot of single petcock bikes suffer fuel starvation around the long left onto the front straight. Holed piston time...

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      • tbirdhd

        #4
        HI thanks Guys , I have a pingel with single outlet ill be using, less someone can tell other wise !

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        • blowerbike
          Forum Guru
          GSResource Superstar
          • Aug 2008
          • 7057
          • Ohio Closer to KY Than Cleveland

          #5
          use what you have...
          you can also install a vacuum cap over the right side fuel inlet and only use the left side and run to your single petcock.
          i have done this on street and drag raced bikes with no bad results or problems.

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