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GSXR1100 Slingshot Carb Conversion

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    #1

    GSXR1100 Slingshot Carb Conversion

    Hi Guys,
    As the title says, looking at swapping these carbs (BST36SS) onto an otherwise standard GSX1100SZ, apart from 4 into 1. My question is will the standard jetting get me on the road?

    I will have oval K&N filters fitted. The carbs are apart at the moment and look in pretty good condition, and I am just going through them replacing all of the orings and will reset the float height before I put them back on. from what I have read in other posts it is necessary to lower the fuel level a couple of mm to avoid flooding.
    Tags: None
    #2
    You will need, at a MINIMUM, adjustable needles. A jet kit would be better. Ray.

    Comment

      #3
      Originally posted by rapidray View Post
      You will need, at a MINIMUM, adjustable needles. A jet kit would be better. Ray.

      Ray, how do the Dyno jet needles/emulsion tubes work (DJ-3136) for the 89-92 GSXR 1100 work compared to the Factory Pro needles and stock emulsion tubes?

      At some point after Bill gets a stock 1100 setup we are going to put the WBO2 sensor on a pods/pipe/BST36SS setup and see how it tunes. See if we can get come calibrations relative to the BS36

      Comment

        #4
        Originally posted by posplayr View Post
        Ray, how do the Dyno jet needles/emulsion tubes work (DJ-3136) for the 89-92 GSXR 1100 work compared to the Factory Pro needles and stock emulsion tubes?

        At some point after Bill gets a stock 1100 setup we are going to put the WBO2 sensor on a pods/pipe/BST36SS setup and see how it tunes. See if we can get come calibrations relative to the BS36
        Yes!
        The float heigth is hard to obtain without modifying the tang on the float. These carbs (BST) were meant to be mounted at an angle. Look at the float bowl.
        I set a rack up for a guy but he has yet to mount them. My notes on this project are at home but I'll post them when I return.
        The problem with these carbs is the slide guides wear out and wallow out the emulsion tube. I have even seen some needles that had a hook shape. If Jim still has that link I sent him you can still purchase them new but not from Suzuki.
        Last edited by chef1366; 05-19-2013, 03:23 PM.
        1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
        1985 GS1150ES stock with 85 Red E bodywork.

        Comment

          #5
          I noticed one of our members (Mike?) has posted on his website http://www.theflyingbanana.com/ some detail on this mod. The way I read this initially was just raising the needles to the 4th groove and it was plug and play with the standard jetting but then re-read this page and noticed he talks about DJ needle with spacer washer and 150 mains. The standard mains are 123.5 in my carbs.

          On Rays advice in previous threads I have emailed Aarc at Factory pro for guidance and am waiting on a response.

          I am hopeful of getting a good baseline on this, from what I can see on these carbs there appears to be minimal wear.

          Comment

            #6
            Marc from factory pro has responded indicated that CRB-S09-3.0 would be the best option.

            gsxr1100 jet kit shift kit emulsion tubes Factory Pro 800 869-0497
            http://www.factorypro.com/Prod_Pages/prods09.html
            factory, bandit, gsf, 1200, carb, carburetor, carburator, tuning, stage 3, config 30, stage 1, mikuni, BMC, air filter, auto, automotive, motorcycle, ega, exhaust gas analyzer, factory, Aprilia, bandit, Honda, BMW, Buell, cbr, cbr600, ec997, eddy current, gsx, gsxr, ignition advance, Indian, jet, Kaw, Kawasaki, Yamaha, Mikuni, Keihin, Harley Davidson, r6, salvisberg, shift kit, tuning, billet, engine cover, dyno, dynojet, power commander, 100, 150, 200, factory, emulsion tube, needle jet, transmission detent, allen screw, racing, sounds, frame bumper,


            Had to go to three different shops today to try and track down the metric viton o-rings. None of them stock metric and have to order them in.

            Comment

              #7
              Originally posted by ozgs View Post
              Marc from factory pro has responded indicated that CRB-S09-3.0 would be the best option.

              gsxr1100 jet kit shift kit emulsion tubes Factory Pro 800 869-0497
              http://www.factorypro.com/Prod_Pages/prods09.html
              factory, bandit, gsf, 1200, carb, carburetor, carburator, tuning, stage 3, config 30, stage 1, mikuni, BMC, air filter, auto, automotive, motorcycle, ega, exhaust gas analyzer, factory, Aprilia, bandit, Honda, BMW, Buell, cbr, cbr600, ec997, eddy current, gsx, gsxr, ignition advance, Indian, jet, Kaw, Kawasaki, Yamaha, Mikuni, Keihin, Harley Davidson, r6, salvisberg, shift kit, tuning, billet, engine cover, dyno, dynojet, power commander, 100, 150, 200, factory, emulsion tube, needle jet, transmission detent, allen screw, racing, sounds, frame bumper,


              Had to go to three different shops today to try and track down the metric viton o-rings. None of them stock metric and have to order them in.
              Send them to me
              I have all the o-rings.
              1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
              1985 GS1150ES stock with 85 Red E bodywork.

              Comment

                #8
                Originally posted by chef1366 View Post
                Send them to me
                I have all the o-rings.
                Would love to, but I am in Aus.

                Cheers,

                Jon.

                Comment

                  #9
                  I have rebuilt the carbs with the o-rings described at http://www.gixxer.com/forums/showthr...BST36SS+orings

                  So far so good. Starts cleanly and holds a good idle with no fuel leaks. Hopefully I can take it for a quick ride tomorrow.

                  It appears that given the free play in the throttle, I assume that the cable inner is a little long, and needs shortening slightly. Can anyone confirm??

                  Thanks,

                  Jon.

                  Comment

                    #10
                    What throttle cable are you using with the slingshot carbs? Standard gs1100 is to long.
                    Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
                    Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
                    Work in progress: 78 GS1000, unknown year GS1100ES

                    Comment

                      #11
                      Originally posted by ozgs View Post
                      I have rebuilt the carbs with the o-rings described at http://www.gixxer.com/forums/showthr...BST36SS+orings

                      So far so good. Starts cleanly and holds a good idle with no fuel leaks. Hopefully I can take it for a quick ride tomorrow.

                      It appears that given the free play in the throttle, I assume that the cable inner is a little long, and needs shortening slightly. Can anyone confirm??

                      Thanks,

                      Jon.
                      What did you set the float heigth at?
                      1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
                      1985 GS1150ES stock with 85 Red E bodywork.

                      Comment

                        #12
                        When I did this mod on my 83 1100E, I installed new jets, 142.5 and set the floats at 6mm. I bent the tang that the throttle cable attaches to make up the slack in the cable itself. I made a choke pull out of a universal choke kit cable, cut down to the distance needed to make it function properly. Very happy.

                        Carb Swap - The GSResources Forums
                        http://www.thegsresources.com/_forum/showthread.php?t=84777&highlight=stiksave
                        Place your GS performance, tuning or mods related questions in this forum.
                        Last edited by Guest; 06-07-2013, 07:29 PM.

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