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XS gas tank cap & petcock interchange?

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  • #1

    XS gas tank cap & petcock interchange?

    O.K., I'm sure I have almost used up my quota of gas tank questions, but here is one more.

    Are any of the other XS special gas caps and petcocks interchangable with the XS1100 special tank?
    Or for that matter, are any of the other xs special tanks useable on a 1100?

    I am finding XS1100 special tanks on ebay, but a lot of them are missing the cap or petcocks or both.
    There aren't a lot of 1100 petcocks and gas caps listed though.

    So will any of the other XS special models parts work?
    Any place I could do the research myself?
    1979 XS1100
    1974 CB750
    1985 V65 Sabre
    1988 KLR650
    2001 CR250
    Tags: None
  • #2
    Well, for a cap you're in luck; almost all of the same years 650, 750, and 850 special caps interchange. Even some of the 'standard' 650 caps work. You can even buy new reproduction ones from Mikes and PartsNMore, but there's been some grumbling about quality....

    The petcocks, not so good. The XS11 Special petcocks are model specific according to the parts fiche. I don't understand why Yamaha changed the mounting bolt pattern for these...

    Worst case, you could build some adaptors from aluminum and use some universal petcocks.

    Good place to check parts interchange is here: http://www.benefiscal.co.uk/
    Fast, Cheap, Reliable... Pick any two

    '78E original owner - resto project
    '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
    '82 XJ rebuild project
    '80SG restified, red SOLD
    '79F parts...
    '81H more parts...

    Other current bikes:
    '93 XL1200 Anniversary Sportster 85RWHP
    '86 XL883/1200 Chopper
    '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
    Cage: '13 Mustang GT/CS with a few 'custom' touches
    Yep, can't leave nuthin' alone...

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    • #3
      I think it might be parts n more that has generic petcocks and the adapter plate for the special tank. Problem is you lose the reserve function of the petcocks with them, so when you run out your out...
      Nathan
      KD9ARL

      μολὼν λαβέ

      1978 XS1100E
      K&N Filter
      #45 pilot Jet, #137.5 Main Jet
      OEM Exhaust
      ATK Fork Brace
      LED Dash lights
      Ammeter, Oil Pressure, Oil Temp, and Volt Meters
      Green Monster Coils
      SS Brake Lines
      Vision 550 Auto Tensioner

      In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

      Theodore Roosevelt

      Comment

      • #4
        Originally posted by natemoen View Post
        I think it might be parts n more that has generic petcocks and the adapter plate for the special tank. Problem is you lose the reserve function of the petcocks with them, so when you run out your out...
        PartsNMore does have the adpators and petcocks, and you don't lose the reserve function with them they claim. But their petcocks are pretty expensive ($30 each); you can get spiffy chrome ones from J&P for under $20, so it may pay to shop around...
        Fast, Cheap, Reliable... Pick any two

        '78E original owner - resto project
        '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
        '82 XJ rebuild project
        '80SG restified, red SOLD
        '79F parts...
        '81H more parts...

        Other current bikes:
        '93 XL1200 Anniversary Sportster 85RWHP
        '86 XL883/1200 Chopper
        '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
        Cage: '13 Mustang GT/CS with a few 'custom' touches
        Yep, can't leave nuthin' alone...

        Comment

        • #5
          Originally posted by crazy steve View Post
          PartsNMore does have the adpators and petcocks, and you don't lose the reserve function with them they claim. But their petcocks are pretty expensive ($30 each); you can get spiffy chrome ones from J&P for under $20, so it may pay to shop around...
          maybe I am thinking of someplace else. I know the ones I am thinking of had no sort of filter tower, just a screen. Don't know how you would do a reserve without the tower, but maybe there is a way.
          Nathan
          KD9ARL

          μολὼν λαβέ

          1978 XS1100E
          K&N Filter
          #45 pilot Jet, #137.5 Main Jet
          OEM Exhaust
          ATK Fork Brace
          LED Dash lights
          Ammeter, Oil Pressure, Oil Temp, and Volt Meters
          Green Monster Coils
          SS Brake Lines
          Vision 550 Auto Tensioner

          In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

          Theodore Roosevelt

          Comment

          • #6
            Got my fuel petcocks from parts n more, reserve is functional, and there are various adapters to choose from. My only gripe was the gaskets that came with the adapters, too thin and too narrow; squashed out the side of the adapter with less than moderate torque. Made my own gaskets, and now have no worries of fuel leaks onto or into the engine.
            '78 E "Stormbringer"

            Purrs like a kitten, roars like a lion, runs like a gazelle (being chased by a cheetah).

            pics http://s1209.photobucket.com/albums/...tormbringer45/

            Comment

            • #7
              Originally posted by scrapvalue View Post
              - - - Are any of the other XS special gas caps and petcocks interchangable with the XS1100 special tank?
              Or for that matter, are any of the other xs special tanks useable on a 1100? - - -
              Hi Bill,
              MikesXS Special gas cap will work perfectly on an XS11 gas tank.
              MikesXS Standard gas cap will NOT work because it's dimensionally different although it looks the same.
              The XS11 Special petcocks have smaller mounting bolt centres than the XS650 Special petcocks so those won't work.
              Early XS650 Standard petcocks might possibly swap with XS11 Special ones but I've never tried it.
              Fred Hill, S'toon
              XS11SG with Spirit of America sidecar
              "The Flying Pumpkin"

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