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Thread: What size fcr carb to use for a 440ex?

  1. #1
    Join Date
    Jan 2008
    Location
    indianapolis
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    409

    What size fcr carb to use for a 440ex?

    I'm just curious as to what fcr carb to use on a 440. It has an edlebrock on it now.
    I was thinking a 250f fcr would be better then a 450fcr. So I figured I would get some opinions from other people.
    White Chassis

  2. #2
    Join Date
    Dec 2010
    Location
    Indiana
    Posts
    1,040
    Hi fellow Hoosier, not sure why you think a smaller carb would be better? I ran a Doug Eichner edlebrock for years and it was good but just too stiff a throttle. I haven't read anyone finding a better carb than the trx450R carb, and soft throttle control.
    1984 Honda 200M ATC
    1985 Honda 200X ATC
    1986 Honda 200X ATC
    1999 Honda 406EX....11:1, Web Cam / Hardened rockers. Ported. WB CDI. CT Racing header. WB E-Series slip on. Lonestar swinger.
    2001 Honda/KTM 520 Hybrid Quad. Its like a 400EX but twice the horsepower.
    2014 Artic Cat Wildcat Trail XT

  3. #3
    Join Date
    Jan 2008
    Location
    indianapolis
    Posts
    409
    I'm just curious to what people are running.
    White Chassis

  4. #4
    Join Date
    Apr 2005
    Location
    WI
    Posts
    8,922
    im running a 450 carb on my 440. its ok, nothing to write home about...

    the days that it runs poorly far outweigh the days that it runs great. it seems to be very finicky on mine at least. it was even more finicky with the smaller bore stuff i ran previously (416cc). it seems like a constant battle to keep it tuned, i really just gave up, made sure it was rich enough to cover me and left it alone.

    ive heard good things about the FCR's though, many here have ran it and had good luck with it.

    steve
    2019 Maverick X3 XDS Turbo R
    2003 TRX 400EX
    2016 HONDA RANCHER

  5. #5
    Join Date
    Jan 2008
    Location
    indianapolis
    Posts
    409
    Thanks guys
    White Chassis

  6. #6
    Join Date
    Sep 2003
    Location
    Lafayette,IN
    Posts
    385
    honestly I ran a fcr39 on my 416 ten years ago and hand down its probably the best carb I have ran not cold blooded tat all like the 400s are and throttle response was great.my current build I got another one to run on it.honestly get the jetting correct and you wont be disappointed I think the 440s can handle the fcr 40 though.
    Punisher Performance and fabrication

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