gs1000 frame and gs1100 motor installation

[Anonymous]

hi everyone...i have a question...i own a 1978 gs1000c...and i also have a 1982 gs1100e motor....i want to put the 1100 motor in the 1000 frame...has this ever been done??? i believe back in the late 70s, or early 80s, some bike publications featured some bikes with this mod.....i've made measurments..and the 1100 motor seems close to the 1000's dimensions for the mounts...some mounts will have to be modified...thanks...oh yes..i am building a retro cafe racer..using the tracy body fairing from ebay, raask rearsets, etc...(i read discussion on the fairing...it's in pretty poor shape...will have to reglass the tank area...cracks, leaks, etc...but can be saved....thanks.....mark.

[robinjo]

I'm not sure about the engine fitting, it probably will fit, but I do know that me and a lot of other people here on the forum would like to see the progress of your project, do you have a digital camera? Want to keep us updated as the work progresses?

[Anonymous]

You will have to fabricate a motormount for the bottom left side, under the shifter. Not a big problem. The fuel valve on the "78" model tank will rest on the top of the CV carbs. You can use a longer bolt for the rear tank mount. & use washers to shim up the rear of the tank enough keep the fuel valve off the carbs. Also will need to adapt wireing harness for the 1100's electronic ign. Use a GS 1100 4 into 1 pipe, it should work on the 1000 frame, with a little mod. to right rear foot peg mount. Can't think of anything else. Good luck

[saaz]

In addition to the above, I seem to remember that one of the front engine mounts needs to be changed from an offet one to a straight one, or vice versa. Otherwise a straight swap using the original mounts.