600cc engine in a 400 frame [Archive]

View Full Version : 600cc engine in a 400 frame

400exstunta

11-08-2002, 07:42 PM

so if i wanted to stick a gsxr engine in my 400 frame, what things would i need to take into consideration? anyone have any good pics of this done?

forum

11-09-2002, 12:10 AM

things like that are stupid unless you plan on going straight and thats it. If you do any trial riding or Motocross dont do it. Keep to offroad engine like the Xr lineup

400exstunta

11-09-2002, 06:42 AM

i didnt ask if you thought it was stupid. i asked what i should take into consideration....

this forum gets worse and worse everyday...

Tommy 17

11-09-2002, 08:31 AM

ur probably gonna hace to cut the frame in half to wedge the motor in it... and then extend it, make motor mounts, reinfroce the frame bc its ment for 28 hp not 128... its probably gonna twist the frame from the torque of the motor and crack it... and then its probably gonna vibrate so bad its gonna crack the frame...

basically stick to a crf