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Thread: Mikuni MJN or Keihin FCR 39 mm

  1. #1
    Join Date
    Aug 2008
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    Mikuni MJN or Keihin FCR 39 mm

    After some Other Carbs, dont ask lol Mikuni MJN or Keihin FCR 39 mm low mileage carbs or does anyone know where.s the best place to buy

    cheers

    marky
    I RIDE because every morning feels Like a weekend, rush hour is a total rush and my bike makes going to work almost worth it.

  2. #2
    Join Date
    Jun 2005
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    Re: Mikuni MJN or Keihin FCR 39 mm

    Could try pdq , zrxoa or the usual jap websites.

    Either way , they won't be cheap .

    mp
    Hants chapter , more of a sentence now though.

  3. #3
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    Quote Originally Posted by mp View Post
    Could try pdq , zrxoa or the usual jap websites.

    Either way , they won't be cheap .

    mp
    Hi MP.

    YUP looks like map sites as PDQ can't get me a price.

    gonna wait a while

    cheers
    I RIDE because every morning feels Like a weekend, rush hour is a total rush and my bike makes going to work almost worth it.

  4. #4
    Join Date
    Feb 2007
    Location
    Colchester Essex
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    2,859

    Re: Mikuni MJN or Keihin FCR 39 mm

    I'm sure Morri (Drew) is still about
    Another 1 of 6. " Essex Geezers "

  5. #5
    Join Date
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    Re: Mikuni MJN or Keihin FCR 39 mm

    You should stop being a wuss and sort your 40's
    What Goes Around..........!!!

  6. #6
    Join Date
    Aug 2008
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    Quote Originally Posted by ZRXNige View Post
    You should stop being a wuss and sort your 40's
    bastardooooo lol

    I've got em pretty sorted and I'm very impressed with the results.
    I RIDE because every morning feels Like a weekend, rush hour is a total rush and my bike makes going to work almost worth it.

  7. #7
    Join Date
    Feb 2007
    Location
    Colchester Essex
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    Re: Mikuni MJN or Keihin FCR 39 mm

    Quote Originally Posted by exesspeed View Post
    I've got em pretty sorted and I'm very impressed with the results.
    Yes, but do they rattle ?
    Another 1 of 6. " Essex Geezers "

  8. #8
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    Re: Mikuni MJN or Keihin FCR 39 mm

    Quote Originally Posted by AndyC View Post
    Yes, but do they rattle ?
    as trick as the MJN's are, Kehin's will ultimately give you more performance.

  9. #9
    Join Date
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    Re: Mikuni MJN or Keihin FCR 39 mm

    Why ?

    Please feel free to start a new thread with a decent answer.

    Mp
    Hants chapter , more of a sentence now though.

  10. #10
    Join Date
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    Re: Mikuni MJN or Keihin FCR 39 mm

    Quote Originally Posted by mp View Post
    Why ?

    Please feel free to start a new thread with a decent answer.

    Mp
    They work better at upper mid and high rpm. Might just be because they're narrower which would explain the higher rpm side, the MJN's are smoother lower down. when I had them both on a dyno(not the same day) but same ish temps and same dyno, the FCR's were stronger from about 6.5k onwards.

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