xr 650 motor

[renegade_400ex]

would a XR650 or XR 600 fit in the 400ex chassis without too much trouble. just wondering i think it would be cool to have the 400 as a spare or something. i would swap them back and forth. also how much power u think it would put out? z-400 and banshee eater?

[BKVIEW4U]

well ive seen a 650 in a 300ex so i know it will fit a 400ex. and yes it would be a everything eater

[Quadracer5]

I was thinking about swapping in an XL650R motor myself. May be a bit less in the HP department(not sure), but its got an electric starter. :devil That would be perfect imho.

Kyle

[bradley300]

i beleive the tranny gears in the xl motor are too tall to use off road, something to check into.

[rob-u/21]

I am also thinking on doing this project. I just need to find an engine. It's not as easy as it sounds. First of all the only the xr650r (watercooled) will work the xr650L (aircooled) the head is to wide. You have to move the top motor mount that goes across the frame. You also have to shorten a couple of tubes that sit under the engine. You also have to shave off a little on the rear mount of the engine. You also need a bigger oil tank, a carburator the edlebrock will work, plus other things that come up. I spoke to the person who built a couple of XR quad for the BITD series and this is what he told me. He is actually selling these quads.

[McGivern]

Who is the guy who is building/selling the 600/650ex?
Do you have a url or phone number?

I have an XR600 hopped up and a 400ex and want to swap the motors. the 400 would be enough for the bike.

Mark

[mikesutphin]

i seen a warrior with an xr 650l motor in it and he was out runnig raptors and banshees bad im talking 15 bike lenths and kept pulling away in a drag race hes in the october 2002 dirt wheels in the letters section anyway im going to do this conversion also as soon as i find a xr650r for a good price i talked to ken at rockyridge racing and he can do the conversion and powdercoat the frame i cant wait to get this done later

[jerry-89-250R]

there's a 650ex for sale atvconnection, owner says 95+ mph

[rob-u/21]

sombody posted some pictures of this quad some time ago.

why would a 650 engine outrun a raptor?? i know displacement doesnt have a lot to do with it. is it because dirt bike engines are not detuned? or does it weigh less. im just wonderin what makes them so much faster than 660's

[TRX_Thumper]

its becasue the raptor 660 is detuned.....or could we say doesnt put out the power it should for a 660