i have a xr650 engine i want to put in a 400ex for a dune quad has any body rode one like this or done the conversion would it out run a yfz 02 raptor in a drag race or would it even be worth the trouble any help would be appreciated thanks mike

 

There are a bunch of these conversions around. You will no doubt need to beef up the frame quite a bit. It should be the fastest thing on 4 wheels.

 

If it were me, I'd think about selling the motor and 400ex and buying a DS650. You can pick them up in the low $3000 range. They come with a stout 650 and are built extremely tough from the factory. They will take a raptor but yfzs with light mods are tough contenders. I'm not saying that it doesn't sound like a good project, just that there is an excellent comparable factory unit that could be had for similar costs and far less hassles. the DS also has more travel and dimensions more suited for dune running. The EX would need a longer swingarm and that's alot of $$$. The earlier DS's had a long factory swingarm.

 

Someone of the forums put a XR650 into a warrior frame. So ya its possible, beef up the frame or your going to have a little to much sag [img]i/expressions/face-icon-small-wink.gif[/img] Sorry man i forgot your name! XR650---something

 

XR650 Warrior, now a healthy 717 on alky, turns a few heads in the Warrior frame [img]i/expressions/face-icon-small-happy.gif[/img]

 

One currently under construction in my 400ex frame as well , should be a runner !!!!!! [img]i/expressions/face-icon-small-happy.gif[/img]

 

XR, you remember seeing my wife on her Black R at sandfest? I should have her new 350 alky motor together soon and she might want to see some action in Louisiana.

 

Don't recall the black R, sounds like it should take care of business.

 

Dont worry, we've had our eye on your bike for a year or so. That was a strong runner before, I definitely cant wait to see it run now!

 

hey xr650 warrior i met you in kermit you have the650l motor it is sharp looking would you email me with your phone number mikesutphin@yahoo.com i also seen your picture in dirt wheels about a year ago or so i would like to talk to you about it or call me at 505 706 0383 thanks