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  • #1

    carb/airbox question

    i am confused. i was going to pull my airbox tonight, the whole thing, top and bottom, to get a good look at the back of my carbs. hopefully, i'll be able to spray some carb cleaner in there, and break up whatever is causing my problem. (damn sea foam did too good of a job i think, and got some crap in the carbs).

    here is my question. i was reading the carb tech tips, and they all say getting the airbox out is a pia. maybe i mis-read or misunderstood. can someone please let me know if i can just pull the airbox and the boots off of the carbs and get at the back? i don't want to mess with the v-brace apparently, because that sounds like it is a can of worms i don't wish to open. please help, i am gonna get after this thing in a hour or so.

    thanks!!!
    1980 XS 1100 Special (working to be my daily ride)
    Tags: None
  • #2
    In order to get the airbox out, you need to pull the carbs first. So, I don't think your plan will work. To get the carbs out, you need to loosen the clamps on the front carb boots and the airbox boots. You can remove the 3 airbox bolts (1 on each side and 1 on top) and push the airbox back to help in getting the carbs out. There is not enough room to get the airbox out without removing the carbs. There is not enough room after you push the airbox back to really get a good look at the carbs. If you do have some crud in the carbs, they probably need to be pulled and cleaned anyway. Check the tech tips for help. Don't mess with the bolts/screws that hold the v-strap onto the airbox.
    79 XS1100 SF - name TBD - possibly "Divorce Maker" Kerker 4 into 1, K&N filter in stock air box
    79 XS1100 SF - parts (for now) - "Divorce Maker II"
    79 XS1100 SF "The one that got away" sold in 1993.

    Comment

    • #3
      As stated, to get the airbox off you first need to remove the carbs. I once made the mistake of taking off that V bracket on the top of the airbox. Plan on about an hour to get that thing back together. Definitely not an enjoyable experience, thats for sure!
      '79 XS11 F
      Stock except K&N

      '79 XS11 SF
      Stock, no title.

      '84 Chevy K-10 "Big Blue"
      GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

      "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

      Comment

      • #4
        Yup I took the v braket off the first time too, only took about 15 minutes to put back together (with the pieces that I could find, can only use 3 of the wing bolts cause I lost one of the aluminum bushings it screws into). Just pull the carbs and clean them. Even if you have never seen the inside of a carb as long as you take your time and just do one at a time you cant screw much up!
        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

        • #5
          not the answer i was hoping for, but thanks for the help. i guess it is time to bite the bullet and pull the carbs and clean them. i was hoping for an easier solution, but you know what they say about the easy way....anyway, thanks.
          1980 XS 1100 Special (working to be my daily ride)

          Comment

          • #6
            Originally posted by 65oldsboy View Post
            In order to get the airbox out, you need to pull the carbs first. So, I don't think your plan will work. To get the carbs out, you need to loosen the clamps on the front carb boots and the airbox boots. You can remove the 3 airbox bolts (1 on each side and 1 on top) and push the airbox back to help in getting the carbs out. There is not enough room to get the airbox out without removing the carbs. There is not enough room after you push the airbox back to really get a good look at the carbs. If you do have some crud in the carbs, they probably need to be pulled and cleaned anyway. Check the tech tips for help. Don't mess with the bolts/screws that hold the v-strap onto the airbox.
            Now ya tell me. What a PITA putting my airbox back together yesturday.

            Comment

            • #7
              Originally posted by Rstyduck View Post
              Now ya tell me. What a PITA putting my airbox back together yesturday.
              Dont you just hate finding things out the hard 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

              • #8
                Originally posted by 1st bike View Post
                not the answer i was hoping for, but thanks for the help. i guess it is time to bite the bullet and pull the carbs and clean them. i was hoping for an easier solution, but you know what they say about the easy way....anyway, thanks.
                I believe the one thing everyone will agree with here is there are no quick and easy solutions with these carbs. They gota be tore down and cleaned! The bright side is they aren't that hard to do and lots of good info available here.

                Deny
                1978 XS1100E - The TimeMachine
                1980 XS850 Special - Little Mo

                Comment

                • #9
                  Originally posted by Rstyduck View Post
                  Now ya tell me. What a PITA putting my airbox back together yesturday.
                  Yup, when I changed my engine I did it the wrong way. It took a lot of work to get the airbox back together right. So I'm not doing it the wrong way again!
                  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

                  • #10
                    carb's

                    It is not a car. Spraying carb clearning down the carbs will do less then nothing. It is a bitch, but pull the carbs, keep a 4 carb parts apart. clean and adj. to exact spec! The carbs on these are where most prob. come from. Don't be scared, just follow the advice from this site, then sync. adj. and pray.
                    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

                    • #11
                      And when you get the airbox off, store it carefully to sell to one of the purists who will think it's a good thing to have.
                      Fit 4 of MikesXS pod filters that have XS stamped into their ends instead.
                      They are magic. Once you can get at the carbs in a few moments and not bust your knuckles doing so you will find that you'll hardly ever need to work on them.
                      Fred Hill, S'toon
                      XS11SG with Spirit of America sidecar
                      "The Flying Pumpkin"

                      Comment

                      • #12
                        fred....i have read enough to believe that if i switch to pods, i'll never get the thing to run right. i actually want to ride the bike, not just look at it. i'll keep the box....unless you offer enough money for it for me to buy a new bike, that is....
                        1980 XS 1100 Special (working to be my daily ride)

                        Comment

                        • #13
                          Originally posted by 1st bike View Post
                          fred....i have read enough to believe that if i switch to pods, i'll never get the thing to run right. i actually want to ride the bike, not just look at it. i'll keep the box....unless you offer enough money for it for me to buy a new bike, that is....
                          Hi1st,
                          FWIW, my XS11SG runs just fine using pods from MikesXS on the inlet and 1960s Triumph mufflers on the exhaust.
                          I jumped the main jets up one size and opened the slow running needles a half-turn is all.
                          By all means feel free to keep the stock airbox on your bike if it will make you feel more secure because even if I could find that much cash there's those closer to me that have a better claim.
                          Fred Hill, S'toon
                          XS11SG with Spirit of America sidecar
                          "The Flying Pumpkin"

                          Comment

                          • #14
                            Oem

                            Originally posted by 1st bike View Post
                            fred....i have read enough to believe that if i switch to pods, i'll never get the thing to run right. i actually want to ride the bike, not just look at it. i'll keep the box....unless you offer enough money for it for me to buy a new bike, that is....
                            Hi 1st bike, I agree, keep it OEM as you can, then all the spec, books and manuals will apply + I think part of this bikes style comes from those great looking chrome sides on that air box JIMHO
                            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

                            • #15
                              Originally posted by XS1100_OEM4ME View Post
                              Hi 1st bike, I agree, keep it OEM as you can, then all the spec, books and manuals will apply + I think part of this bikes style comes from those great looking chrome sides on that air box JIMHO
                              I agree, and was thinking that even if I jump to pods, I will probably figure out a way to gut the airbox and put the pods on the ends of the existing stacks. That would hide the pods, keep the look of the box, and still make it easier to get the carbs in and out.
                              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

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