GS upgrade?

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  • MaurieG
    Forum Apprentice
    • Aug 2010
    • 74
    • Jarrow-North East-UK

    #1

    GS upgrade?

    Morning guys.
    Is it possible to fit an 1127 (or 1200 B12) oil cooled head and barrels to an Aircooled GS1100 bottom end? Has anyone on GSR done it?
    GS750EC, GS1100E, GS1150EG, Harris Magnum 2 (GS1170E motor), GSXR750F, Mk1 GSF1200, and finally Mk1 GSF600.
  • dorkburger
    Forum LongTimer
    Past Site Supporter
    • Jan 2013
    • 10769
    • Stupid Freehold Boro NJ

    #2
    I think Racing Jake has a similar setup. He hasn't posted in a while though.
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    Glen
    -85 1150 es - Plus size supermodel.
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    • MaurieG
      Forum Apprentice
      • Aug 2010
      • 74
      • Jarrow-North East-UK

      #3
      To expand a bit. If it's possible, I'd fit the bigger barrels, along with a 'Dot' 750 head, and RS 36's!
      GS750EC, GS1100E, GS1150EG, Harris Magnum 2 (GS1170E motor), GSXR750F, Mk1 GSF1200, and finally Mk1 GSF600.

      Comment

      • posplayr
        Forum LongTimer
        GSResource Superstar
        Past Site Supporter
        • Dec 2007
        • 23673
        • Tucson Az

        #4
        I think at that pint you should just do the entire 1127. I know of at least two active members that have st least one. Figure on a suspension upgrade while at it.

        Comment

        • MaurieG
          Forum Apprentice
          • Aug 2010
          • 74
          • Jarrow-North East-UK

          #5
          I'd rather stay with the GS bottom end. The motor is in a Harris frame, so suspension geometry is spot on to start with! To go with a full 1127 motor would entail using exhaust stub extensions, which don't look right, and the motor looks too small in the frame anyway. Whereas, the GS motor fills the frame perfectly.
          GS750EC, GS1100E, GS1150EG, Harris Magnum 2 (GS1170E motor), GSXR750F, Mk1 GSF1200, and finally Mk1 GSF600.

          Comment

          • Chuck78
            Forum Sage
            Past Site Supporter
            • Aug 2012
            • 3691
            • Columbus, Ohio

            #6
            Mmmmmm.... Harris frame GS... (drooool...)

            porn, errrr...umm, photos, plz?
            '77 GS750 920cc heavily modded
            '97 Kawasaki KDX220R rugged terrain ripper!
            '99 Kawasaki KDX220R​ rebuild in progress
            '79 GS425stock
            PROJECTS:
            '77 Suzuki PE250 woods racer
            '77 GS550 740cc major mods
            '77 GS400 489cc racer build
            '76 Rickman CR1000 GS1000/1100
            '78 GS1000C/1100

            Comment

            • Chuck78
              Forum Sage
              Past Site Supporter
              • Aug 2012
              • 3691
              • Columbus, Ohio

              #7
              Just send Rapid Ray your 1100 head for some serious porting work, cams, etc and a set of JE or CP pistons bored into it. No need to try and make something work that may require totally custom pistons (pin location/compression height, pin diameter, etc) and a lot of custom fixes to fit it together and make the gaskets all match up etc...
              '77 GS750 920cc heavily modded
              '97 Kawasaki KDX220R rugged terrain ripper!
              '99 Kawasaki KDX220R​ rebuild in progress
              '79 GS425stock
              PROJECTS:
              '77 Suzuki PE250 woods racer
              '77 GS550 740cc major mods
              '77 GS400 489cc racer build
              '76 Rickman CR1000 GS1000/1100
              '78 GS1000C/1100

              Comment

              • Steve
                GS Whisperer
                • Jun 2005
                • 35924
                • southwest oHIo

                #8
                Originally posted by Chuck78
                Just send Rapid Ray your 1100 head ...
                Great idea, but it's gonna get EXPEN$IVE.

                Did you notice that the OP in in the UK?

                .
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                mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
                hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
                #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
                #2 son: 1980 GS1000G
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