1991 kdx250 question

[89kdx200rdr]

does anyone have any idea if the engine from a 1990 kdx 200 will fit in the frame of a 1991 kdx 250?

 

[Matt90GT]

not a drop in. The 200 is based off the 125 motors.

The 250 is based off the 88-91 KX250 motor.

 

[89kdx200rdr]

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

 

[Matt90GT]

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.

 

[89kdx200rdr]

that post was so informative i printed it. thanks a bunch for all the great info

 

[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?

 

[89kdx200rdr]

oh and what kinda carb do the 250's have

 

[Matt90GT]

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

 

[Matt90GT]

Originally posted by 89kdx200rdr
oh and what kinda carb do the 250's have

Kehin PWK 38

 

[89kdx200rdr]

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?

 

[Matt90GT]

Where do you get your info: Get it directly from the source!

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

Same as the KX500

 

[89kdx200rdr]

well slick your link says 94-96 kdx250 not 91

 

[Matt90GT]

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