400ex framed hybrid

[tar]

Hey I got a 400ex that I really can't get rid of but need way more power. I was thinking a crf450, yz450, or a yz426 motor. Anyone have experiences with any of these motors? good or bad. Also how easy was the install? Let's see your hybrid and your opinion on it. I am open to anything.

[CSR400EX]

i just got my YZ426 hybrid about a month ago, and i absolutely love it. it pulls all the way to the rev limiter. i have been through this bike to fix some of the quick fixes they did to get rid of it, like the throttle cable, wheel spacers, and a few bolts that were left loose. but from what i can see, it is fairly easy to install a 426 into a 400EX frame. the only thing that i dont like is the way the carb has to angle to attach to the intake tube from the airbox. here is a pic, the only one i have so far. any more questions feel free to ask

http://i220.photobucket.com/albums/dd193/CSR400EX/joneswheelrside.jpg

[pro-rider46]

i know the crf motors are extremely similar to a 2006+ 450r, the crf 450r motor is a really strong engine, and it pulls really good. take a 450r for a ride and compare it to a 400ex, the trx is a little less powerful than the crf engine.

[tar]

I know there is a kit that a member on this site sells to transfer a yz426 motor in a 400ex frame..has anyone purchased this or have it on their quad? Right now i am leaning to a yz426 motor because of this kit and I have heard good of this motor. I need all the help I can get so just throw anything you have out there.

[CSR400EX]

yeah, ss440ex is who you are thinking of. my bike has one of his kits in it minus the oil tank. someone installed the wet sump kit in my motor. i have no problem keeping up with 450's and 700's anywhere.