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Frame/engine pairing for 7-11 swap?

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    #1

    Frame/engine pairing for 7-11 swap?

    Was spit balling ideas for a no-holds-barred GS build the other day with a friend, and I mentioned the 7-11 swap (1100 motor in a 750 frame).

    Did a few searches, but cannot nail down the year/model range of the frames and engines that work for this swap. I'd assumed it was just another mod for the 77-79 GS 750 bikes, but now am not so sure.

    So what's the Venn Diagram for frames and engines that can cross-breed into a 7-11 build?

    TIA
    Tags: None
    #2
    7/11 swap

    Last months' issue of Classic Motorcycle Mechanics has a decent article on that subject, you can order back issues (from a US distributor) at
    www.classicbikebooks.com. Unsure of any source material for the 8-valvers, though.
    sigpicSome of the totally committed probably should be.
    '58 + '63 Vespa 150's' (London, GB/RI, US)
    '67 X6 T20 ('67 Long Beach, Ca.- misty-eyed)
    '71 Kaw. A1-ugh ('71 SF, CA- worked @ Kaw dlr)
    '66 Yam. YL1('72 SF-commuter beater)
    '73 Kaw. S2A-2Xugh ('73 SF-still parts slave)
    '78 GS 750C ('77 SF-old faithful-killed by son)
    '81 KZ 750E ('81 SF-back to Kaw. dlr)
    '81 GS 650G ('08 back to NE&ME- (project)
    '82 GS '82 (2) GS650GZ, L, Middlebury, G current

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      #3
      There was an article in Classic Motorcycle Mechanics dated July 2005 that described A GS 750 with a GS 1000 engine.
      It doesn't mention what had to be done to fit the engine in the frame but I believe the lower brackets have to be modified?
      sigpicJohn Kat
      My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
      GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020

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        #4
        You must be talking about an 1100E 4 valve engine, the 1100 2 valve engines were all shaftys . I dont know about pre-80 frames, but 80-82 750 accepts the 1100E, not the 83 & up.

        Comment

          #5
          Originally posted by gearhead13 View Post
          You must be talking about an 1100E 4 valve engine, the 1100 2 valve engines were all shaftys . I dont know about pre-80 frames, but 80-82 750 accepts the 1100E, not the 83 & up.
          The GS1000E's are 8V chain drive, like the Cooley replicas

          Suzuki GS1000, GS1000E, GS1000S, GS1000L
          http://www.suzukicycles.org/GS-series/GS1000.shtml

          Comment

            #6
            So is the 7-11 swap strictly a 16-valve affair?

            Comment

              #7
              Originally posted by MisterCinders View Post
              So is the 7-11 swap strictly a 16-valve affair?
              Well, no but you said 1100 and yours is a chain drive, the 1000E was chain drive, the 1100G is shaft and the 1100 chain drive is a 4 valve.
              I believe you can stuff an 1000E engine in there and possibly an 1100E.

              Comment

                #8
                Originally posted by gearhead13 View Post
                Well, no but you said 1100 and yours is a chain drive, the 1000E was chain drive, the 1100G is shaft and the 1100 chain drive is a 4 valve.
                I believe you can stuff an 1000E engine in there and possibly an 1100E.
                This would be a totally different bike, not my current 7/850.

                Comment

                  #9
                  Interested in hearing this. I keep looking at the Kats and ES's, but want to stay around 1100cc. Would love to see an 1100 or 1150 shoved into this... http://cincinnati.craigslist.org/mcy/3776181155.html

                  Probably easier to just wait around and find a decent 1150E with a fairing and deal with the subtle differences.

                  Comment

                    #10
                    So what about 1100/1150 top end and cranks on a 1000 chain drive bottom in a 750 frame?

                    Heh.

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