Bigger Engine for a 1985 GS550E??

[bobbysick]

I am looking to fit a larger engine (preferably a GSXR or Katana model) into my 1985 GS550E frame. What will fit is the question???

I am willing to go the extra route of steering stabilizers and reinforcing the frame, even as far as to reweld the mounting brackets...anybody have any ideas or expperience behind this situation?

[jimcor]

Our very own Robinjo has pictorial proof you can put an early Gixxer 750 in a 550 frame. Been a while since it was posted, but you might try a search. Me, I'd just go looking for another bike...till I remember the BSA B-25 Starfire I have that I'd really love to have a 350 YPVS in...\\/ \\/

Plus Nerobro from the Windy City has used GS 650 jugs and top end parts to hot rod a 550.

[robinjo]

Not sure if the 750R motor fits in the later 550, is it a 2-valve engine and dual shock chassis?

[skreemer]

naw the 85 is the monoshock rear 16 valve jobber...