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View Full Version : DRZ vs. Z400


tholt
01-16-2005, 07:50 PM
I just built a drz/250R hybrid and finally got to fire it up today and ride it. My brother rides a kfx400 and the after market parts for the two motors are the same parts.

They both have both in and ex hotcams, wiseco highcompression piston. They both have the thin base gasket and both an fcr 39 carb. His bike has a dyna ignition where mine has a stock drz400s cdi.

For exhaust he has a yoshimura on his kfx and on my bike i have a stockz400 head pipe modified to fit with a gytr slip on.

The drz motor feels a lot stronger then the kfx400 motor. We have been trying to figure out why the drz feels stronger when the internals are basically the same.

The only difference i can think of is that the gear ratios might be different and that could make a difference. Just curious what you guys thought.

Tim
JMRPowersports
440z17
01-19-2005, 04:42 PM
That might be what it is. Sorry its off topic but i saw the bike on z400central.com and it looks bad.:eek2:
tholt
01-19-2005, 04:50 PM
I have been real pleased with it so far. I just wanted to use the drz motor to use something different.

Now i just can't wait to go out and race it and see how it is going to do compared to everything else.
Zyklon_B
01-19-2005, 05:12 PM
Maybe cuz ur hybrid dont have tha reverse weight and it have a kick start . Do u know how ur 250r/drz weight ?
bone705
01-19-2005, 06:47 PM
attach a pic of this hybrid.:eek2:
Zyklon_B
01-19-2005, 06:57 PM
http://www.jmrpowersports.com/pics/Quad1.jpg
bone705
01-19-2005, 06:59 PM
ver nice:eek2: what frame is it?
tholt
01-19-2005, 08:28 PM
For right now i just took a stock 87 frame and gusseted it and changed the motor mounts for the motor. I also built the swinger to.



Tim.
bone705
01-19-2005, 08:32 PM
did you have to modify the upper frame rails? you usin a cr500 link?
tholt
01-19-2005, 09:01 PM
yeah i modified the upper frame rails. i'm using a no-link setup. Had to raise the top shock link for a no link shock.
zowdy
01-20-2005, 11:57 AM
very nice build.i would think the gearing could have some to do with the felt power diff.z/kxf's are heavy.i think your weight diff between the to quads is the biggest factor.if we could cost effectively cut,15-25 lbs off a mx z/kfx,think of how much performance could be gained.:eek2: