Originally Posted by Mudguts
That would be a big no , 690 trellis perimeter frame 450 ,530 back bone frame
There be a hell of a lot of chopping and welding , it would be easier to fit a 450, 530 motor in. 690 frame .
If I get seriously bord one week end I might see if my 500 motor will fit in the 690 but that will be when the 690 motor is out get a 730 bib bore
I don't see how the frame type would make that much difference.
I thought it would be about the same amount of hassle as grafting a different subframe on (with the exception of air box and shock location)...
"Far to the general now, and without great final hope of victory, he has nothing to lose. And it must above all have rabies. For the moment, it dominates this special."