standard vs special petcocks

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  • old_skool
    XSive Maximus
    • Nov 2011
    • 554
    • Ohio

    #1

    standard vs special petcocks

    Will standard petcocks fit on a special, and thus eliminating the octy that way. Sorry for beating a long dead horse
    81 XS1100H
  • old_skool
    XSive Maximus
    • Nov 2011
    • 554
    • Ohio

    #2
    I know this was kinda answered in another one of my petcock threads, I guess I just want to know if they bolt up, I know the standard doesn't use an octy.
    81 XS1100H

    Comment

    • natemoen
      Master of XSology
      • May 2010
      • 8640
      • Fargo

      #3
      No. The bolt spread, center to center, is not the same on the two. Will not work.
      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

      • old_skool
        XSive Maximus
        • Nov 2011
        • 554
        • Ohio

        #4
        Will a standard tank bolt on a special ? And doesn't it hold more fuel? how much does a standard tank(79) and a special hold?
        81 XS1100H

        Comment

        • natemoen
          Master of XSology
          • May 2010
          • 8640
          • Fargo

          #5
          Yes. The fuel level sender is different between the two models and are on opposite sides of the take so you would have to take the special sender and flip it over and move it to the other side of the tank, but other than that it would work fine. I actually had a special tank on my standard when I first got it.

          The standard tank holds something like 5 gallons and the special holds something like 4 gallons.
          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

          • crazy steve
            XS-XJ Guru MODERATOR
            • Jan 2009
            • 7932
            • Beautiful outer Yelm, WA

            #6
            It should be noted that the 'nose' of the seats is slightly different, so you might have to slightly modify the seat. This is seems to be more of a problem if installing a standard tank on a special rather than the other way, but keep it in mind...
            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

            • old_skool
              XSive Maximus
              • Nov 2011
              • 554
              • Ohio

              #7
              Yeah, these are future mods and something to bs about, I'd really prefer to have at least a 5 gallon tank, and have one with just standard 3 way vacuum controlled petcocks without the aid of an octy. If I was unclear, I was considering a standard tank on a special. Has anyone out there mod any other 5 gallon tanks to fit and look cosmetically decent, not talking about making one from scratch. From another bike, can even be non-Yamaha with minimal mods.

              OR....just fix up my special and sell it to buy a standard..lol
              81 XS1100H

              Comment

              • XS1100_OEM4ME
                XS-XJ Guru
                • Mar 2009
                • 1619
                • Fort Myers, Florida

                #8
                Fuel

                5.3 US gal. standard - 3.97 US gal Special

                Originally posted by old_skool
                Will a standard tank bolt on a special ? And doesn't it hold more fuel? how much does a standard tank(79) and a special hold?
                1979 XS1100 Special (Mad Max, OEM) Current
                1980 XS1100 Special
                1990 V Max
                1982 KZ750 LTD Twin
                1986 700 FZR Yamaha Fazer (faster then expected)
                1979 XS750 Special (my 1st Special)
                1974 CB750-Four



                Past/pres Car's
                1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                Comment

                • old_skool
                  XSive Maximus
                  • Nov 2011
                  • 554
                  • Ohio

                  #9
                  BIG DIFFERENCE..I want a standard
                  81 XS1100H

                  Comment

                  • XS1100_OEM4ME
                    XS-XJ Guru
                    • Mar 2009
                    • 1619
                    • Fort Myers, Florida

                    #10
                    25%

                    Yea, that is 25% more fuel, means alot if you take long rides, but when you are my age, you look forward to getting off and pretending it is only because you need more gas, not you need to get off you a$$, just keeping it clean

                    Originally posted by XS1100_OEM4ME
                    5.3 US gal. standard - 3.97 US gal Special
                    1979 XS1100 Special (Mad Max, OEM) Current
                    1980 XS1100 Special
                    1990 V Max
                    1982 KZ750 LTD Twin
                    1986 700 FZR Yamaha Fazer (faster then expected)
                    1979 XS750 Special (my 1st Special)
                    1974 CB750-Four



                    Past/pres Car's
                    1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                    Comment

                    • motoman
                      Master of XSology
                      • Aug 2005
                      • 8413
                      • Grand Junction, Colorado

                      #11
                      Not an issue Steve.......the front of seat is soft and rides upward a bit..........could be a good thing........cushion for your junk.......BTW, the Venturer tank @6.4gal is even better........
                      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

                      • XS1100_OEM4ME
                        XS-XJ Guru
                        • Mar 2009
                        • 1619
                        • Fort Myers, Florida

                        #12
                        Junk

                        Yea, but doesn't that requier even less junk?

                        Originally posted by motoman
                        Not an issue Steve.......the front of seat is soft and rides upward a bit..........could be a good thing........cushion for your junk.......BTW, the Venturer tank @6.4gal is even better........
                        1979 XS1100 Special (Mad Max, OEM) Current
                        1980 XS1100 Special
                        1990 V Max
                        1982 KZ750 LTD Twin
                        1986 700 FZR Yamaha Fazer (faster then expected)
                        1979 XS750 Special (my 1st Special)
                        1974 CB750-Four



                        Past/pres Car's
                        1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                        Comment

                        • old_skool
                          XSive Maximus
                          • Nov 2011
                          • 554
                          • Ohio

                          #13
                          I'm hoping when I'm finished with the bike, I can make regular trips from my home to WV, approx 256-300 miles one way depending on the scenery I want to take in. My parents are getting older, and want to be able to check in on them from time to time, at least in the spring/summer/fall riding months and fuel cost is a big consideration, which why I want to use the bike. Plus its a great excuse to get down there and do more fishing/camping. I'm sure I'll have to stop at least once for fuel, but I don't want to HAVE to stop, I want to stop WHEN I want.
                          81 XS1100H

                          Comment

                          • old_skool
                            XSive Maximus
                            • Nov 2011
                            • 554
                            • Ohio

                            #14
                            Originally posted by motoman
                            Not an issue Steve.......the front of seat is soft and rides upward a bit..........could be a good thing........cushion for your junk.......BTW, the Venturer tank @6.4gal is even better........
                            Damn!! What will that fit....special or standard with some mods....probably a hard to find item anyway.
                            81 XS1100H

                            Comment

                            • natemoen
                              Master of XSology
                              • May 2010
                              • 8640
                              • Fargo

                              #15
                              the 81 model was called the Venturer. it was a standard with a factory touring setup and large tank. Looks like like a standard tank just taller.
                              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

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