1100 jugs

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  • cyclefvr2

    #1

    1100 jugs

    anyone know if 1100 jugs will fit 80-83 750 cases??
    the heads fit ppl say, the motors fit the frames
    so couldnt the jugs be used,and wiseco pistons made to fit the 750 rods,and 1100 bore
  • Guest

    #2
    Different cases so I'd say no.

    Comment

    • Graham

      #3
      The 750 crank wouldn?t have the stroke for the 1100 jugs. Just put a 1100 engine in the 750 frame.

      Comment

      • rapidray
        Forum Guru
        GSResource Superstar
        • Oct 2006
        • 8195
        • So Cal

        #4
        The 1100 engine bolts into the 80-82 750 chassis but NOT the 83. Ray.

        Comment

        • Larry D
          Forum Sage
          Past Site Supporter
          • Jul 2008
          • 4926
          • Indianapolis,IN

          #5
          Originally posted by rapidray
          The 1100 engine bolts into the 80-82 750 chassis but NOT the 83. Ray.
          Are the engine mounting points the same on the 80-82 750 whether it's an "E" or an "L" ?

          In other words, can I bolt right up an 1100E engine in a 750L frame or vice-versa ?
          Larry D
          1980 GS450S
          1981 GS450S
          2003 Heritage Softtail

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          • rapidray
            Forum Guru
            GSResource Superstar
            • Oct 2006
            • 8195
            • So Cal

            #6
            As long as it is 16 valve engine in a 16 valve chassis as that is what I believe he is referring to. Ray.

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            • gs1428

              #7
              yes they fit. you have to cut the bottom of the 1100 sleeves and take just a little out of the cases. you can go as big as 1197. using a 1150 block .. a 750 with stock 1100 pistons and block on it equates out to a 963cc motor. built many of them. makes a dang strong little motor

              Comment

              • blowerbike
                Forum Guru
                GSResource Superstar
                • Aug 2008
                • 7057
                • Ohio Closer to KY Than Cleveland

                #8
                i have to disagree.
                the 80-82 750's are far from strong.
                i have had to many stock 750's with spun rod bearings...
                i'm also thinking that the 750 has smaller wrist pins than 18mm.
                not positive but seems likely.

                Comment

                • gs1428

                  #9
                  i ment a strong running motor. they are 18 mm wrist pin. we get about 2 seasons on the rod bearings.. i set them around 40 thousands in the hole and cams at 114 116.

                  Comment

                  • silverhelme
                    Forum Apprentice
                    Past Site Supporter
                    • Jul 2010
                    • 95
                    • Republic, WA

                    #10
                    Originally posted by gs1428
                    yes they fit. you have to cut the bottom of the 1100 sleeves and take just a little out of the cases. you can go as big as 1197. using a 1150 block .. a 750 with stock 1100 pistons and block on it equates out to a 963cc motor. built many of them. makes a dang strong little motor
                    I would be interested in hearing more about this set up. 1100 engines seem to be hard to come by around here or expensive because of racing. I am retired and on fixed income so can't afford big costs all at once but could slowly buy the pieces a little at a time to build something like this for my 82 750 E.
                    1982 GS750EZ
                    1978 GS750EC

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                    • blowerbike
                      Forum Guru
                      GSResource Superstar
                      • Aug 2008
                      • 7057
                      • Ohio Closer to KY Than Cleveland

                      #11
                      purchase an 1100/1150 engine and have more HP and be cheaper in the long run.
                      plus WAY more reliability.

                      Comment

                      • silverhelme
                        Forum Apprentice
                        Past Site Supporter
                        • Jul 2010
                        • 95
                        • Republic, WA

                        #12
                        Originally posted by silverhelme
                        1100 engines seem to be hard to come by around here or expensive because of racing. I am retired and on fixed income so can't afford big costs all at once but could slowly buy the pieces a little at a time to build something like this for my 82 750 E.
                        I would if I could afford the cost because I loved the torque my 81 had. As an auto mech I did engines for 40 years so I have no problem with the mechanical end and I can currently afford to spend only about 150 a month on parts and this usually gets eaten up by my V8 Fiero, my turbo Subaru or my swapped and lifted 78 F150.
                        1982 GS750EZ
                        1978 GS750EC

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                        • blowerbike
                          Forum Guru
                          GSResource Superstar
                          • Aug 2008
                          • 7057
                          • Ohio Closer to KY Than Cleveland

                          #13
                          another option is the 78/79 GS1000 engine..
                          these are dirt cheap and don't spin rod bearings and can be built up over time to make good HP and torque.
                          and they bolt in 750/1100 16v. frames.

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