Can a '93 gsx1100g motor fit in an '80 850g frame?

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  • 80GS850GBob
    • Jan 2026
    #1

    Can a '93 gsx1100g motor fit in an '80 850g frame?

    My question is can a 93 gsx1100g motor fit into an '80 gs850g frame? I have an opportunity to acquire said motor and rear drive ...just wondering?
    I've seen a few swaps here but they've only gone to the mid '80s motors...this would be even newer.

    My current 850g motor runs fine...the questioned gsx1100g motor is a decent price and there's always the old adage...there's no replacement for displacement...
    Tags: None
    • Steve
      GS Whisperer
      • Jun 2005
      • 35924
      • southwest oHIo
      #2
      All I can say is ... please take lots of pictures to share with us.

      I have no information on the (exterior) size difference of the GSX motor, but at least the 850 frame is the same full-size frame that is shared by the 1000G and 1100G.

      .
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      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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        • Buffalo Bill
          Forum Guru
          Past Site Supporter
          Super Site Supporter
          • Jun 2008
          • 6004
          • New Buffalo, Michigan 49117
          #3
          I don't remember any such project published here. You would probably be the 1st.
          1982 GS1100G-
          1990 GSX750/1127
          1987 Honda CBR600F Hurricane
          1985 Kawasaki GPz750

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            • thebrandonbeezy
              Forum Sage
              • Aug 2016
              • 1233
              • vero beach
              #4
              Frickn do it, ive thought about trying it.. but the old 8v is the entire reason i got into the gs in the first place
              I build Pipers

              https://farm5.staticflickr.com/4842/...b592dc4d_m.jpg

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                • 80GS850GBob
                  #5
                  Originally posted by Buffalo Bill
                  I don't remember any such project published here. You would probably be the 1st.
                  I searched before I posted....sort of figured that newer engine was out of the forums time frame...but I thought I'd toss it out anyway.
                  The car crowd I hang out with is all about swapping out motors for bigger/better/newer...I come by it honestly...

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                    • 80GS850GBob
                      #6
                      Originally posted by thebrandonbeezy
                      Frickn do it, ive thought about trying it.. but the old 8v is the entire reason i got into the gs in the first place
                      The thought is there, for sure. Haven't seen it yet...just heard about it. Heard the bike has other issues that the current owner doesn't want to address...{bad starter - marginal paint}.

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                        • 80GS850GBob
                          #7
                          Originally posted by Steve
                          All I can say is ... please take lots of pictures to share with us.

                          I have no information on the (exterior) size difference of the GSX motor, but at least the 850 frame is the same full-size frame that is shared by the 1000G and 1100G.

                          .
                          True on the frames - but the '90s frames go mono shock rear so the layout might be somewhat different...might not. A whole cycle sitting in front of me would aid in measurements to compare to...hoping to hear back from my friend this weekend about this other guy who has the '93.

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