350x Carb upgrade - yz400 Keihin 39mm

[jaykup]

I am looking for an upgrade to my stock carb with a 39mm Keihin carb. The one in the auction is the exact one I am looking for. These carbs provide excellent performance.

Does anyone know of it will fit?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=010&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=200087729688&rd=1

[Dirtcrasher]

I don't know but it sure looks like alot of crap just to get fuel and air into the motor. What do you plan on plugging it into? Whats the plug for?

Most guys seem to go with the 400EX carb upgrade. Lets us know if you find a better conversion....

[NOS_350X]

If you get it ill trade you a 400ex carb for that one. That is an FCR carb, they are by far the best 4 stroke carb. BUT its going to be close if the top of the carb will clear over the gastank.

[jaykup]

Yeah, thats what I've heard. Even for some 400ex carbs.

I lost the bidding by 3 dollars :( But I will find another one like it and let you know how it bolts up.

[NOS_350X]

Honestly dude a 39 is going to be too much carb for a 350x. probably better with a 37. One off of a new 4 stroke 250 bike would be perfect. Right now on my BUILT X i have a carb off of the trx450. I think its a 40, and its just too much. The bike ran much better witht he 400ex carb. Actualy had more top end with the smaller carb, the engine kept some velocity through the intake.

[jaykup]

I don't think that will be an issue for me, my engine is currently being rebuilt with the 430 Powroll kit in it. Plus, your going to port the head :) I'll be sending that out in a day or so, I just need to clean it up.