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    gs450 turbo size?

    anyone ever turbo one of these little bikes? wanting to try something funky.

    be a 4-500cc size engine build. trying to decide on the rest of the induction system for the turbo. cv carbs, vm carbs, mech/efi

    and then that will determine my exhaust system.

    i have found a few audis and saabs in the junkyard with turbos that i can source from.

    lates

    lefty

    #2
    huh?


    a turbo 450 will run like a 650...
    turbo something bigger to make it worth your wild

    Comment


      #3
      terry,
      the 1000 is getting a built motor too. this is for the new race bike i am doing. i want the worlds fastest 400cc streetbike.

      Comment


        #4
        Put down the pipe...
        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


          #5
          Well, he did say he wanted to try something "funky".
          1981 gs650L

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

          Comment


            #6
            Instead of looking for info on putting a turbo on a GS 400/425/450, look around at what has been done to the GS500. It is generally more of a modded engine (I'm guessing because the entire bike is readily available). There is at least one turbo charged GS500 on the GSTwins forum, and I found a super-charged GS500 on Custom Fighters (although it wasn't finished online).

            Comment


              #7
              Originally posted by hotrods316 View Post
              gs450 turbo size?
              anyone ever turbo one of these little bikes?
              i have found a few audis and saabs in the junkyard with turbos that i can source from.
              You make it painfully obvious that you don't know ANYTHING about turbos.

              You need to match the size of the turbo to the size of the engine. Those Audis and Saabs have engines that are 5 to 6 times larger than the bike you are trying to victimize. The bike won't have enough 'oomph' to even spin the turbine, let alone spin it fast enough to develop some pressure on the compressor side.

              If you really want "the world's fastest 400", first of all, start with a 400, not a 450, then find a turbo that is properly sized for that engine.

              Good luck, post pictures.

              .
              sigpic
              mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
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              Comment


                #8
                "I think it could be worth a try just to see how a compact turbo twin would mock up in a motorcycle chassis...it would be cool if it ended up weighing like a 250 but accelerating like a 1000."

                Kevin Cameron, "Engine Downsizing" in Cycle World September 2014.
                1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

                2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

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                  #9
                  about this size should be plenty big enough........

                  1978 GS1085.

                  Just remember, an opinion without 3.14 is just an onion!

                  Comment


                    #10
                    Originally posted by Agemax View Post
                    about this size should be plenty big enough........


                    How about this one?





                    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

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                      #11
                      Honda cx500 turbo, look it up
                      These are a possible turbo that would be suitable.

                      OR get a supercharger from a modern seadoo.
                      Stephen.
                      1981 GSX540L "Frankintwin"
                      1989 GS500E Resto-mod .

                      400 mod thread
                      Photo's 1

                      Photos 2

                      Gs500 build thread
                      GS twin wiki

                      Comment


                        #12
                        Originally posted by hotrods316 View Post
                        terry,
                        the 1000 is getting a built motor too. this is for the new race bike i am doing. i want the worlds fastest 400cc streetbike.
                        Just rejet it for Nitro methane. It will fly
                        Last edited by stetracer; 08-11-2014, 04:13 PM.
                        My stable
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                        85 GS1150-9.72@146mph stock W/B.
                        88 GSXR1100-dragbike 9.18@139.92mph/5.68@118mph.
                        98 Bandit 1200-9.38@146mph/6.02@121mph.
                        90 Suzuki GS 1425cc FBG Pro Stock chassis 5.42@124mph
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                        Comment


                          #13
                          Back in the 70's, there was a 500cc Vincent single running the 1/4 mile under 9 seconds in England - Brian Chapman... supercharged and running nitro.

                          http://www.britishdragracinghof.co.u.../brian-chapman

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