motor swap

[codyxs400]

i had this crazy idea and i want a ton more power on my bike and the best way that i can think for the least amount of money is a motor swap the one i got runs just fine so i think im gona build a go cart and put my old motor on that. but my question is whats the biggest motor that i can put on there with the least amount of fabricating or major changes

 

[1lowdiesel]

650 should fit fine. I've got a 920 v twin i was thinking about stuffing into mine.

 

[drewpy]

should get an R1 engine in there if you use the frame and suspension from the same bike.

really, only xs400 engines fit in xs400's