best carburetor

[linkindust313]

what would be the best carburetor to buy for a 400ex with the mods listed below? Even personal preferences would be greatly appreciated.

[JD400exrider]

I have no complaints with the FCR 39 You will find allot of people on here run them. With your mods it looks like you are after a low end machine. Stage 1 cam and a 39 rear sprocket.

I felt a better throttle responce and a good pull all the way through the RPM's They are pricey though. 350 +/- used and 425-450 new. If you get a FCR get the adjustable fuel screw it makes it easier to dial her in. ;)

For less coin you may want to get the stock carb bored and worked. 125-175 I here those will also give you a better throttle responce and a better punch through the rpm's over the stock carb. Just depends how much money ya want to spend. :cool:

[linkindust313]

cool, thanx man!

[linkindust313]

alot of people i know run lectron carbs, and say they really like them. I never really researched particular brands too much. I know edelbrock makes a pumper-style carb, edelbrock is a good name but that really doesnt mean it will run good.

[sparks400ex101]

nothing like fcr's i love um

[camsdad]

i have both fcr 39 and lectron the fcr is a bit smoother but both work considerably better over a worked stock carb.i also have a lectron w/new cable and , modified thumb throttle 200 shipped

[H_W]

Originally posted by sparks400ex101
nothing like fcr's i love um

I agree, I love mine also. It really woke my 400 up.

[sparks400]

i dont have a fcr on the ex but my dad has a fcr 41 on the z and that thing woke it up so much

[flybyyou400ex]

i hear edelbrok 440's r the best w/ +6 HP gains i may get one later on

[hondafreestyler]

I just bought a kehin fcr 39 for my 400 ... hope i like it!

[sandspanker]

no brainer the FCR39 all the way..

[westcoastmxer]

hey guys i was wonderin wuts the differnce in power betwene the fcr39mm. or 41mm.?

[wgbanks]

I have an Edelbrock on my 416 with a Hot Cams 2, Sparks advance key, PowerBomb with an eSeries WB pipe.... and I am completely satified with the setup. I am sure that the FCR is a great carb, but I have only ever used the stock and the Edelbrock. The Edelbrock is a huge improvement over stock and a breeze to dial in. No jets to change. All this IMHO.

[Rebelrider4OOex]

where can i get a fcr39mm from and can i run it with just slip on pipe? how much will it help?

[JD400exrider]

It will help in the power and throttle responce. Keep checking the for sale section or give C&D a call. That is where I bought mine. (# at top of page)

[montyjcm]

hey guys i was wonderin wuts the differnce in power betwene the fcr39mm. or 41mm

Yeah, I am wondering the same. Is the 41mm better for the quad if you have a big bore kit?