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GS750 Motor Interchangeability

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    #1

    GS750 Motor Interchangeability

    I have an 1980 GS750E and I am wondering if a motor from a 1983 GS750E with mono shock will fit into my frame. The newer motor has only 5k miles and is pretty much in show room condition, plus it always good to have spares. Any info would be appreciated.

    Thank you
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    #2
    Yes, it will fit. It is, physically, a smaller engine. It is NOT a bolt in, however. The rear lower mount should bolt up & then it is a matter of fabbing the rest of the mounts. Not all that hard if you have any skills.
    Ray.

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      #3
      Better yet can I fit a GS1000 motor in a 750 frame? Looking for a winter project... I love the way my bike handles now but I think extra power would be nice, think the 1000 motor will be to heavy?

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        #4
        spoke to a guy overhere in the u.k. at a local show,his gs.750was fitted with a gs1000 motor.slots in the frame o.k.rear mounts fit but he had to fab some new front engine mounts.

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          #5
          Why waste time on an 8 valve engine when a 16 valve 1100 or 1150 will make a LOT more power & there are a LOT more parts available for those engines?!! And those engines are a BOLT IN!!!
          Ray.

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            #6
            Originally posted by rapidray View Post
            Why waste time on an 8 valve engine when a 16 valve 1100 or 1150 will make a LOT more power & there are a LOT more parts available for those engines?!! And those engines are a BOLT IN!!!
            Ray.
            Do they literally bolt in or is some custom Fab work necessary?

            Comment

              #7
              Originally posted by ericeder141 View Post
              Do they literally bolt in or is some custom Fab work necessary?
              The 1100 will literally bolt in. I know for sure the 80-81 16 valves will for sure, they use the same frame. Lordy, I would love to bolt in an 1150 into my 750E frame and leave the 750 badges on it heheheh.
              sigpicMrBill Been a GSR member on and off since April 2002
              1980 GS 750E Bought new in Feb of 1980
              2015 CAN AM RTS


              Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

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                #8
                Awesome Just need to track down a donor bike now!!

                Comment

                  #9
                  Originally posted by mrbill5491 View Post
                  The 1100 will literally bolt in. I know for sure the 80-81 16 valves will for sure, they use the same frame. Lordy, I would love to bolt in an 1150 into my 750E frame and leave the 750 badges on it heheheh.
                  The 1150 valve cover would give it away. Use the 1100 motor for the same look. An 1170 motor would be good to surprise unsuspectors with!!
                  Ray.

                  Comment

                    #10
                    sleeper bikes! i'd kinda like to do that with my 650g.

                    Comment

                      #11
                      Originally posted by rapidray View Post
                      The 1150 valve cover would give it away. Use the 1100 motor for the same look. An 1170 motor would be good to surprise unsuspectors with!!
                      Ray.
                      No body around here knows what a 1150 motor looks like. It will work lol. Ooooo a 1170 motor eh? How much lol.
                      sigpicMrBill Been a GSR member on and off since April 2002
                      1980 GS 750E Bought new in Feb of 1980
                      2015 CAN AM RTS


                      Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

                      Comment

                        #12
                        Originally posted by mrbill5491 View Post
                        No body around here knows what a 1150 motor looks like. It will work lol. Ooooo a 1170 motor eh? How much lol.
                        I have a used set or 3 of 1170 pistons if you are really interested.
                        Ray.

                        Comment

                          #13
                          Originally posted by rapidray View Post
                          I have a used set or 3 of 1170 pistons if you are really interested.
                          Ray.
                          Thanks Ray, just wishful dreaming here for now.
                          sigpicMrBill Been a GSR member on and off since April 2002
                          1980 GS 750E Bought new in Feb of 1980
                          2015 CAN AM RTS


                          Stuff I've done to my bike:dancing: 1100E front end with new Sonic springs, 1100E swing arm conversion with new Progressive shocks installed, 530 sprockets/chain conversion, new SS brake lines, new brake pads. New SS fasteners through out. Rebuilt carbs, new EBC clutch springs and horn installed. New paint. Motor runs strong.

                          Comment

                            #14
                            Finally trackeddown an 1100 motor question is can I use my stock 750 electronics on the 1100motor (coils, plug wires, etc..) or do i need to also buy the electronics???

                            Comment

                              #15
                              Yes they are the same. I think even the rotor pickups are (but use the one from the new motor).

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