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View Full Version : Xr200 Carb On 250ex



taino_racing
04-30-2007, 08:41 PM
JUST GOT MY BRAND NEW $50 (ON EBAY) XR200 CARB AND YES IT FIT PERFECTLY ON INTAKE AND ON THE FILTER SIDE ALSO ,BUT YOU HAVE TO REALLY PUSH A BIT! THE CHOKE BRACKET SWAPS OVER PERFECTLY.NOTICE THAT SOME XR200 MODELS ACTUALLY HAVE THE BRACKET FROM FACTORY!(ON EBAY)THE ONLY THING THAT DOES NOT FIT RIGHT UP IS THE THROTTLE CABLE. THE XR CARB HAS A BIGGER PISTON AND THE 250EX CAP WONT COME OFF THE STOCK CABLE SO I PLAN ON GETTING A NEW CABLE OR MAYBE CONVERT TO TWIST THROTTLE! I WILL KEEP YOU POSTED AS WHAT WORKS, HOPE THIS HELPS SOME OF U 250EX RIDERS!



(2) 06 250EX ONE RED ONE BLACK
06 400EX RED
O7 TRX450R WHITE

BlasterEaten250
04-30-2007, 09:28 PM
Cool, let us know how it works when you get it hooked up.

taino_racing
05-02-2007, 06:31 PM
i hook up the xr carb ,found that it just barely clears the 250ex intake(the xr o-ring gasket is a lot bigger).i went to cyclegear and the manager let me go thur some throttle cables found one that look right but inner cable was too long.dying to hear what it would sound like i open the fuel to the carb(by the way the xr carb fuel inlet is a lot smaller then the ex,just use adapter) and the ex started instanly sounds great with the hmf full pipe,its runs a bit on the fat(rich) side here in tampa (sealevel).will let u know what jet i end up with!will post pics soon. i will try to get the right cable tomorrow. will keep u posted

Conman007
05-02-2007, 08:27 PM
That looks nice. Where do you ride in Florida.

mt400
05-02-2007, 09:46 PM
I am putting a carb from a crf150f on my wife's recon. Everything bolts up great except for the throttle cable. The top of the crf carb is 30mm across. Please let me know what you use for a cable. Thanks.

taino_racing
05-08-2007, 08:25 PM
OK , i finally got to work on my wifes 06 250ex again, heres a recap i bought a xr200 carb from ebay($50) took the choke bracket off the ex carb and installed on xr, fit perfect. installed xr carb on 250 with no problem!then i found that i could not use the 250 throttle cable on xr carb. cap was to small to use on xr. so as i mention before i went to cyclegear and found a motion pro cable the part number u will see on one of the pic. this outer cable was right size but the inner cable was too long, found that u can unsolder the piston side of the cable,cut the cable then resolder end back on cable.i was able to use the stock air box along with the kn filter for 250ex .u can see in one of the pic the fuel hose adapter i made,i put a small section of plastic tube inside so it would not flatten smaller fuel line!i then put on a fresh plug(original was 1yr 8 month old).i am using a hmf full pipe system .found the carb ran to low on idle so adjusted up.next found that it would bog down if i would hit throttle hard.finally after three changes, found that the clip on the fifth slot(down) work best(tampa is sealevel)i think the original jet is a 110 plan to change to 115 or 120.i have not ran it on top end,but it lift the wheels by just hardly hitting throttle!think everyone should go for this swap its fairly cheap!found many of these carb still for sale on ebay!

taino_racing
05-08-2007, 08:28 PM
below the cable on piston side of carb that i unsolder an made shorter

taino_racing
05-08-2007, 08:31 PM
this is what the throttle side looks like after i cut and resolder end,i use the original cable for proper lenght

taino_racing
05-08-2007, 08:32 PM
this is the motion pro cable i used

mt400
05-09-2007, 05:34 PM
thanks for the info on the throrttle cable. i sent my old cable and the cap from the new carb to terry racing to have them build me a new one.

taino_racing
06-03-2007, 04:51 PM
anyone else tried it out yet,like to hear u exp.

taino_racing
08-12-2007, 08:41 PM
ttt

njk4o5
08-15-2007, 03:19 PM
if you put the xr carb on the ex, can you just take the xr cable and twist throttle off the bike too and just use those?

taino_racing
08-15-2007, 05:02 PM
if it fits the thumb throttle go for it

Rider-trx_250ex
09-05-2007, 09:22 PM
You say you got the carb off ebay.......was it an "aftermarket" brand for an honda xr200 or was it an OEM xr200 carb?

taino_racing
09-07-2007, 06:51 PM
i think they are the same as far as bolting on the 250ex

09-09-2007, 10:56 AM
which carb is bigger? the bigger carb is best

taino_racing
09-09-2007, 06:17 PM
as far as i know all are 27 mm stock is 22mm

BR16250
04-01-2008, 04:57 PM
hey taino_racing i am buying the carburator for my 250ex and im looking into the throttle cable you bought and i cant seem to find it on motionpro because they only sell dirtbike cables. can you please post a link for it? thanks and good job!

FULLSPEEDJUNKY
04-20-2009, 11:46 AM
I am in the proccess of doing this upgrade and found that the moition pro cable 02-0472 goes to a Honda CR 125 04-07. I ordered the new carb off ebay for $50. It is an aftermarket. I havent decided where to order the cable from yet but I will do that later today. I need to figure out the jetting on this. It is an 06 bone stock. I am going to put on a Uni filter and keep the stock pipe for now. The recomended jetting in this article is 115-120 but there has been no update to the findings and that was for a full HMF pipe. Anyone else done this swap with any input?

RCM
04-21-2009, 11:48 AM
I am in the process of doing it now myself. I have a HMF pipe, No airbox lid, with a uni.

I just ordered more jets, The jets that came with my Dynojet kit for my stock carb work in my new carb. I have a DJ112 main in it right now.

Like i said i order some more 114,116,118,120. It still seems to be running lean in mine with the 112.

I did find (here in Ohio) that i put the Eclip on the 3rd Position. But i am going to Experiment with it in the 4th position as well.

You will have to do some tuning with your fuel screw. Mine was backfiring really bad until i made some adjustments.

I got my carb from www.motopartsmax.com. 27MM

The cable is tricky, i am working with Toby at Motion Pro. He has read this link. His best suggestion is to send him the Carb. and they will make the proper cable.

I cut and re-soldered mine, but it is not perfect yet. I was impatient, and bought one and cut it down too.

I will keep everyone posted.

FULLSPEEDJUNKY
04-21-2009, 05:07 PM
I just recieved the carb today in the mail and it comes with a 108 main so I will be picking up a handful of jets to get this thing dialed in. I just finished up the widening and shock conversion with the banshee front shock in the rear and this thing handles like a dream for my son. I am very impressed with the way this thing rides. Now to smooth out the motor:blah:

hondariderdylan
04-21-2009, 08:07 PM
Originally posted by FULLSPEEDJUNKY
I just recieved the carb today in the mail and it comes with a 108 main so I will be picking up a handful of jets to get this thing dialed in. I just finished up the widening and shock conversion with the banshee front shock in the rear and this thing handles like a dream for my son. I am very impressed with the way this thing rides. Now to smooth out the motor:blah:

do you have a pic of that shee shock on the rear?
or the whole quad for that matter?

FULLSPEEDJUNKY
04-22-2009, 07:09 PM
Ill try to get a pic up for you. The banshee shock is not for jumping or anyone more then mabey 115#

hondariderdylan
04-22-2009, 07:57 PM
Originally posted by FULLSPEEDJUNKY
Ill try to get a pic up for you. The banshee shock is not for jumping or anyone more then mabey 115#

cool
thanks

FULLSPEEDJUNKY
05-01-2009, 12:14 PM
ok a little update. so far I havent put the carb on yet but I just got my cable in the mail yesterday. The carb I got was off ebay. It is a Jin Han carb which is a keihin nock off. I paid 60 bucks delivered for the carb. It has a 108 mainjet. My quad is bone stock so the begining point will be the 108 main. I did a good amount of reaserch before I figured what style jets come in these carbs. I used a micrometer and found that these are small round Keihin jets. I found a website jetsrus.com and they have some good info and prices. they have a complete size conversion chart for different jets that will be helpful.
I am going to install the carb and modify the cable now. It is raining here now so not sure if I can get out to ride but I will post updates.

FULLSPEEDJUNKY
05-01-2009, 03:43 PM
ok the carb is on and runs nice. The fuel line on the carb is 3/16, and the line from the tank is about 1/4 so plan for that you will need to make up an adapter for the line as stated earilier in the post. I put the needle clip on the 4th slot up and ran the 108 main that came with the carb. The idle did need to be adjusted up some. the motor seems to breath much better but it seems flat when I jab the throttle. Ill post up some more info as I dial it in better and do some more mods.

oh forgot to mention that I do not like the throttle cable that I modified and might work with motion pro to make a better cable when I get some time.

Eric

pitbiker2269
12-29-2010, 03:39 PM
ok so i am currently doing this carb swap to my quad. i got a xr200 carb off of ebay.a xr 200 throttle cable off of ebay (which you can make work with the thumb throttle on the 250ex you just have to shorten the cable a little bit, but the adjuster threads are the same so it screws right in.) I also ordered a xr 200 twist throttle. i put the carb on the quad and ran the throttle cable. now i need to make the fuel line adapter and get the twist throttle which is still being shipped. i will post some pics of this swap.

pitbiker2269
12-29-2010, 03:41 PM
:)

powerbomb400
03-21-2011, 11:16 AM
You can use a cable that fits a Yamaha Bear Tracker. It will screw in a the top of the cap at the cable adjuster. We did the same mod to my wifes quad. We also put a race cam from Webb Cams in it. Also put a Powroll piston with a high lift rocker on the intake.

tjar66
06-24-2011, 03:16 PM
Hey when doing this carb swap do we want the 27mm or 30mm carb?

pitbiker2269
06-24-2011, 03:34 PM
27 mm carb