hybrid atv feedback

[ct_racer]

i was about to change my 400ex engine by a crf 450, i heard of some people that if i do that, i will got some problem after the installation ,my 400ex is fully built mx, i just need more power and dont want to spend 10k ( canadian) for a new bike
give me your feedback for those who have one for the reliability of your hybrid

thanks

[ct_racer]

ok but what about the reliability

[redrider05]

id deffinetly do a crf motor....power is insane just have to get the frame converted n gusseted for the motor swap

[redrider311]

right now im doing a yamaha YZ 426 motor swap into my 400ex frame.. so thats what id reccomend.. my first choice was the CRF 450 though... good luck.. hybrids rule! :p

[416exmx]

I was always a bigger fan of the CRF quads also. I have had several of each (crf and yzf) and both have their advantages and disadvantages. The CRF motors are more mellow and easier to ride, and no need to worry about an oil tank. However, the carb sits lower on the CRF's and with stock converted frames, airboot issues always pop up, CRF pipes are a lil harder to get fittin right, and you need a different water pump cover. I have never had any major problems with any of my hybrids once they were completed. There will be more maintence than is on your 400ex now. All in all it is a great swap. And if you do a converted frame, by time you sell all the 400ex parts you dont need like motor, pipe, carb, oil tank, wiring and stuff like that, you really dont end up with that much more in the swap after all is said and done.

[ss440ex]

Yamaha YZ 426
No problems, except rear tire wear!:D