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FCR 41mm

This is a discussion about FCR 41mm within the Old School Bikes section, where you will Nobody gets left out with this forum; Is FCR 41mm too big for my 1117 downdraft motor ?

  1. 04-29-2010, 03:52 AM #1
    MM1117RF
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    Default FCR 41mm

    Is FCR 41mm too big for my 1117 downdraft motor ?
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  3. 04-29-2010, 02:22 PM #2
    RobWebber
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    Default Re: FCR 41mm

    Nope! Run em!

    Just watch your plugs the first couple times.
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  4. 04-29-2010, 04:04 PM #3
    MM1117RF
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    Default Re: FCR 41mm

    Thanks for the input.
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  5. 04-29-2010, 04:19 PM #4
    RobWebber
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    Default Re: FCR 41mm

    Quote Originally Posted by MM1117RF View Post
    Thanks for the input.
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  6. 09-24-2010, 08:26 PM #5
    MM1117RF
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    Default Re: FCR 41mm

    Hi guys.
    Got a set of used FCR 39's that was on a dwarf car from Egay...
    I will have to re-rack them as they don't make it for RF head of course.
    Carbs are on the way from Michigan.
    Spacing is 80-93-80 for my RF head.
    Any advices on how to re-rack them and parts i'll need ?
    It's nice to have guys with experience helping out...

    Thanks

    Martin.
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  7. 09-24-2010, 11:31 PM #6
    TunerRacer
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    Default Re: FCR 41mm

    37 to 39 is all you need, your not gettin anymore out of a 41 and more low throttle headache.

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    "Was the Worlds Fastest No-bar Bike"

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  8. 09-24-2010, 11:32 PM #7
    TunerRacer
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    Default Re: FCR 41mm

    37 to 39 is all you need, your not gettin anymore out of a 41 cept more low throttle headache.

    -
    "Was the Worlds Fastest No-bar Bike"

    ECS Performance Tuning "Mobile Dyno Service, Chassis, Clutch, and Track Setup"

    "NLR Turbo-Hays Machine"
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