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  • #1

    Tank Question

    I've looked at a lot of postings and am still a little confused regarding whether or not a Standard tank will mount on a Special frame.

    Just bought a second 1979 XS1100 Special (will post pictures when I pick it up) and would like to mount a Standard tank if that works.

    Any thoughts or pictures would be a big help.

    Thanks,

    Doug
    1995 KZ100P
    Pods, jets, pipes, cam adjuster, oil cooler

    1977 Ironhead - custom build
    Hot engine, custom frame, KZ front and rear, high torque starter, alternator conversion, Progressive shocks, Thunderheart wiring, Dyna ignition, oil cooler, Dakota Digital instruments, etc.

    Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.
    Tags: None
  • #2
    The tank absolutely will fit in the frame. You will need standard petcocks, the mounts are larger on the standard, and dump the octy. The only other difference is that the hole for the fuel gauge sender is on the opposition side of the tunnel.
    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

    • #3
      Here's how I mounted a european Standard tank to my SG Special.
      Brian
      XS1100 LG "Mr T", SG "ICBM" & FJ1200
      Check out the XS Part Number Finder

      Be not stingy in what costs nothing as courtesy, counsel and countenance.

      Comment

      • #4
        You will also have a problem with the seat. With the standard tank you will have to modify the seat to make room for the tank, as while it will drop into place on the frame, it goes back a little further and interferes with the seat cushion and I belief the seat pan as well, requiring that you cut a little off of the seat at the front. I would not do any cutting of the seat until you have the tank and have it mounted though, so you can make sure to cut the correct amount to clearance the tank. I understand going the other way leaves a gap between the seat and the tank.
        Cy

        1980 XS1100G (Brutus) w/81H Engine
        Duplicolor Mirage Paint Job (Purple/Green)
        Vetter Windjammer IV
        Vetter hard bags & Trunk
        OEM Luggage Rack
        Jardine Spaghetti 4-2 exhaust system
        Spade Fuse Box
        Turn Signal Auto Cancel Mod
        750 FD Mod
        TC Spin on Oil Filter Adapter (temp removed)
        XJ1100 Front Footpegs
        XJ1100 Shocks

        I was always taught to respect my elders, but it keeps getting harder to find one.

        Comment

        • #5
          NO mods. to seat are necessary to use the standard tank or the Venturer tank. Front portion of seat cushion may ride up a bit on tank, but will help keep you from sliding forward too.
          81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

          Comment

          • #6
            I didn't have to mod my SG seat to use it with a standard tank. It's tight but it fits.
            Brian
            XS1100 LG "Mr T", SG "ICBM" & FJ1200
            Check out the XS Part Number Finder

            Be not stingy in what costs nothing as courtesy, counsel and countenance.

            Comment

            • #7
              Thanks guys.

              Sounds pretty straight forward.

              Doug
              1995 KZ100P
              Pods, jets, pipes, cam adjuster, oil cooler

              1977 Ironhead - custom build
              Hot engine, custom frame, KZ front and rear, high torque starter, alternator conversion, Progressive shocks, Thunderheart wiring, Dyna ignition, oil cooler, Dakota Digital instruments, etc.

              Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.

              Comment

              • #8
                Originally posted by Aches n Pains View Post
                I've looked at a lot of postings and am still a little confused regarding whether or not a Standard tank will mount on a Special frame. - - -
                Doug
                Hi Doug,
                here's mine:-



                Tank drops straight on.
                Must have it's own filler cap and gas taps because the Special's are different and don't fit. Ditch the octy and run vacuum lines to each tap or swap the taps innards left to right to give a manual off position.
                Swap in the Special's thermistor fuel level sender to work the red light.
                The sender's wires have to point forward or the sender will be upside down and not read right.
                Betcha those who didn't crop their seat pan didn't notice or don't care that the front seat latch won't fit in it's pocket.
                I had to crop my seat pan 5/8" short in front and pound a notch to clear the tank recess drain line to make the seat front latch engage properly.
                Fred Hill, S'toon
                XS11SG with Spirit of America sidecar
                "The Flying Pumpkin"

                Comment

                • #9
                  Yeah...looks good!
                  Skids (Sid Hansen)

                  Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

                  Comment

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