someone on the forum did a 2 to 1 swap, pretty sure on a 650 about a year ago. He bought a kit for the conversion, lots of work, lots of things did not line up like they were suppose to. I think he got it running eventually... that last thing he struggled with was the throttle position sensor.
Are you talking about a scratch built new frame for the 650 front end, 1100 engine and back wheel / swing arm?
the 1100 and 650 are almost identical bikes (from a distance its hard to tell them apart) - but everything on the 1100 is bigger, I dont think an 1100 engine will even fit in a 650 frame
It might be easier to rebuild the front end on the wrecked 1100, and end up with two bikes.
Maybe put a 21" wheel on the front of the 1100 - Ive seen a few modded that way, they look incredible.
Last edited by KCW; 08-08-2019 at 02:54 PM.