1991 kdx250 question

Joined
Apr 19, 2003
Messages
488
Likes
0
#1
does anyone have any idea if the engine from a 1990 kdx 200 will fit in the frame of a 1991 kdx 250?
 
Joined
May 3, 2002
Messages
1,517
Likes
1
#2
not a drop in. The 200 is based off the 125 motors.

The 250 is based off the 88-91 KX250 motor.
 
Joined
Apr 19, 2003
Messages
488
Likes
0
#3
thanks, i found the 250 in the trading post for 1200 or best offer. says gc but i'm going to look at it monday. if i can get it for 1000 should i get it? dont know much about the 250's
 
Joined
May 3, 2002
Messages
1,517
Likes
1
#4
The 250s require more work to setup, but are faster than a 200 once done.

You need a 88 KX head gasket , .26" thick
remove the silencer
new pipe
V force II reeds
Carb - #6 slide, 1367 needle, and 38/155-158 jetting.

Once you do that, the motor rips. Especially with a port job. Like any used bike, watch the bearings and linkage for slop.

The bike is heavier, but you can remove about 10 pounds by swapping out to a 90-91 KX 250 rear fender and ditching the metal supports there. The forks are sensative since they only have compression adjustment. You can swap to a 91-94 KX fork easily if you get it complete. Even use your stock clamps. That helps a ton right there!

They have good points, large fuel tank, WR gears 5sp, and a 70w lighting coil. I have seen most ones in good shape go for around $2k lately, but like said watch what you get. When I got mine it cost about $700 to get the rear bearings, axles, pivot bolts and new unitrak link since the entire rear end was gone.
 
Joined
Apr 19, 2003
Messages
488
Likes
0
#6
matt90gt i just checked the moto tassinari website they dont list the kdx 250. while the vforce 2's out of my 200 work?
 
Joined
May 3, 2002
Messages
1,517
Likes
1
#8
Originally posted by 89kdx200rdr
matt90gt i just checked the moto tassinari website they dont list the kdx 250. while the vforce 2's out of my 200 work?
look again! It is there
 
Joined
Apr 19, 2003
Messages
488
Likes
0
#10
V2M03 93-00 KX 125 $ 148.00
V2M03B 2003 KX 125 (Available 11/02) $ 148.00
V2M03A 01-02 KX 125 $ 148.00
V2M08 87-03 KX 500 $ 148.00
V2M08A 87-03 KX 250 $ 148.00
V2M031 89-96 KDX 200/220 $ 148.00


i dont see it is it the same as the kx250?
 
Joined
May 3, 2002
Messages
1,517
Likes
1
#11
Where do you get your info: Get it directly from the source!

http://www.mototassinari.com/PDF/MotoATVweb.pdf

Same as the KX500
 
Joined
May 3, 2002
Messages
1,517
Likes
1
#13
Originally posted by 89kdx200rdr
well slick your link says 94-96 kdx250 not 91
Well if you know something about the KDX250 it was only made from 91-94. So they have a typo there. The engine was the same on all years from 91-94