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Going to 2 carbs on my 550L

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    Going to 2 carbs on my 550L

    Anyone done this? Im going to make a manifold to bring the 4 down to 2, but I have no idea where to start, jet wise. I will probably get 2 new vm carbs, and use pod filters. what size innards would I look for to supply the same amount of gas? I realize it will take alot of trial and error, just looking for a good starting point.

    #2
    Originally posted by zgmike View Post
    what size innards would I look for to supply the same amount of gas?
    You will actually need a lot less gas, because it will be flowing a lot less air.
    http://img.photobucket.com/albums/v5...tatesMap-1.jpg

    Life is too short to ride an L.

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      #3
      "...Im going to make a manifold to bring the 4 down to 2, but I have no idea where to start"

      Don't start, fix your carbs (or pay a member on here to do it) - you'll learn more this way then jury rigging a different setup with inferior performance.
      1981 gs650L

      "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

      Comment


        #4
        Originally posted by tkent02 View Post
        You will actually need a lot less gas, because it will be flowing a lot less air.
        And less gas and less air mean less power. A engine is nothing more than a pump the more you put in the more you get out of it.
        1984 GS1100GK newest addition to the heard
        80 GS 1000gt- most favorite ride love this bike
        1978 GS1000E- Known as "RoadKill" , Finished :D
        83 gs750ed- first new purchase
        85 EX500- vintage track weapon
        1958Ducati 98 Tourismo
        “Remember When in doubt use full throttle, It may not improve the situation ,but it will end the suspense ,
        If it isn't going to make it faster or safer it isn't worth doing

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          #5
          I dont like cv carbs, i want some vm carbs. So from what I gather then, 2 carbs with the much maligned free flowing pod filters and no restrictive airbox, it should be a wash.

          Comment


            #6
            Is this for some sort of minimalist bobber project? Running open pipes?
            Last edited by Nessism; 06-04-2014, 09:04 AM.
            Ed

            To measure is to know.

            Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

            Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

            Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

            KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

            Comment


              #7
              To answer your question, no, nobody's done this. For a reason.

              You don't like CV carbs (although they work perfectly fine), you like VMs, so you're going spend tons of hours to invent and reengineer the entire fuel delivery system for your bike? And it's a 550L (why is it always a 550, 650, or 750 L?), so you're not doing it to increase performance to make it into a roadacer or dragbike.

              Sound like a good idea to me. Let us know how it works out for you.
              sigpic

              SUZUKI:
              1978 GS1000E; 1980 GS1000G; 1982 GS650E; 1982 GS1100G; 1982 GS1100E; 1985 GS700ES
              HONDA: 1981 CB900F Super Sport
              KAWASAKI: 1981 KZ550A-2; 1984 ZX750A-2 (aka GPZ750); 1984 KZ700A-1
              YAMAHA: 1983 XJ750RK Seca

              Free speech is the foundation of an open society. Each time a society bans a word or phrase it deems “offensive”, it chips away at that very foundation upon which it was built.

              Comment


                #8
                they dont work perfectly, nothing does, so you have nothing to offer except genreralizations. Im doing it because in the future it will be a more simple setup. What do you have against me spending time? It isnt your time or energy. I tell ya, i read this forum alot and i think an ideas merit can be gauged by how much resistance the old fogeys on here put up. You get so personal, like you effing invented the thing. NEWSFLASH - This just in - The ONE TRUE GOD, JEHOVAH, did NOT engineer the Suzuki GS!!!!! You Old Farts should remember what your mamas taught you about not saying anything at all.

                Comment


                  #9
                  Is this for some sort of minimalist bobber project? Running open pipes? Yes, kind of. Im moving the battery and electronics, cut the pipes, and they are currently b affled, but that could be changed if it would help the 2 carb system.

                  Comment


                    #10
                    Originally posted by Griffin View Post
                    Sound like a good idea to me. Let us know how it works out for you.
                    We both know it won't work. It is another parts bike in the making.

                    Comment


                      #11
                      Originally posted by JJ View Post
                      We both know it won't work. It is another parts bike in the making.
                      Precisely, and he got all butt-hurt because not only is his idea not being validated, it's being rejected.
                      sigpic

                      SUZUKI:
                      1978 GS1000E; 1980 GS1000G; 1982 GS650E; 1982 GS1100G; 1982 GS1100E; 1985 GS700ES
                      HONDA: 1981 CB900F Super Sport
                      KAWASAKI: 1981 KZ550A-2; 1984 ZX750A-2 (aka GPZ750); 1984 KZ700A-1
                      YAMAHA: 1983 XJ750RK Seca

                      Free speech is the foundation of an open society. Each time a society bans a word or phrase it deems “offensive”, it chips away at that very foundation upon which it was built.

                      Comment


                        #12
                        Originally posted by zgmike View Post
                        they dont work perfectly, nothing does, so you have nothing to offer except genreralizations. Im doing it because in the future it will be a more simple setup. What do you have against me spending time? It isnt your time or energy. I tell ya, i read this forum alot and i think an ideas merit can be gauged by how much resistance the old fogeys on here put up. You get so personal, like you effing invented the thing. NEWSFLASH - This just in - The ONE TRUE GOD, JEHOVAH, did NOT engineer the Suzuki GS!!!!! You Old Farts should remember what your mamas taught you about not saying anything at all.

                        Try not to get any more butt hurt here but you are NOT smarter than the guys at Suzuki who engineered an air box and 4 CV carbs to work the best on your bike.

                        Sorry, but it's the truth.
                        Current:
                        Z1300A5 Locomotive (swapped my Intruder for it), GS450 Cafe Project (might never finish it....), XT500 Commuter (I know - it's a Yamaha :eek:)

                        Past:
                        VL1500 Intruder (swapped for Z1300), ZX9R Streetfighter (lets face it - too fast....), 1984 GSX750EF, 1984 GSX1100EF (AKA GS1150)
                        And a bunch of other crap Yamahas....

                        Comment


                          #13
                          Originally posted by zgmike View Post
                          Is this for some sort of minimalist bobber project? Running open pipes? Yes, kind of. Im moving the battery and electronics, cut the pipes, and they are currently b affled, but that could be changed if it would help the 2 carb system.
                          Perhaps not a parts bike. Sounding more and more like it's headed for the scrap heap. Nobody will buy it after he finishes junking it.

                          Comment


                            #14
                            Originally posted by JJ View Post
                            Perhaps not a parts bike. Sounding more and more like it's headed for the scrap heap. Nobody will buy it after he finishes junking it.
                            Unfortunately, with the "Chopper" reality shows of the '00s, and now the "Café" reality shows of the '10s, the destroyed, non-running hulks of GSes, KZs, XJs, and CBs have become far too prevalent on Craigslist.

                            Around here, there are some weeks where more "modded custom project bikes" (i.e. F***ed over UJMs) are listed for sale than stock or mostly stock bikes, running or otherwise. The "modded custom" is rarely finished, almost never runs, and usually lacks the proper lighting and brakes to be safe to ride, or even street legal.

                            It's a damned shame, too.
                            sigpic

                            SUZUKI:
                            1978 GS1000E; 1980 GS1000G; 1982 GS650E; 1982 GS1100G; 1982 GS1100E; 1985 GS700ES
                            HONDA: 1981 CB900F Super Sport
                            KAWASAKI: 1981 KZ550A-2; 1984 ZX750A-2 (aka GPZ750); 1984 KZ700A-1
                            YAMAHA: 1983 XJ750RK Seca

                            Free speech is the foundation of an open society. Each time a society bans a word or phrase it deems “offensive”, it chips away at that very foundation upon which it was built.

                            Comment


                              #15
                              Right on !

                              Originally posted by Griffin View Post
                              Unfortunately, with the "Chopper" reality shows of the '00s, and now the "Café" reality shows of the '10s, the destroyed, non-running hulks of GSes, KZs, XJs, and CBs have become far too prevalent on Craigslist.

                              Around here, there are some weeks where more "modded custom project bikes" (i.e. F***ed over UJMs) are listed for sale than stock or mostly stock bikes, running or otherwise. The "modded custom" is rarely finished, almost never runs, and usually lacks the proper lighting and brakes to be safe to ride, or even street legal.

                              It's a damned shame, too.
                              Bam !

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