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Thread: 400ex carb/350x jetting?

  1. #1
    Join Date
    Sep 2003
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    138

    400ex carb/350x jetting?

    to anyone thats running the 400ex on their 350x what are you running for a main, pilot and needle position? i have a pipe, removed the choke, no lid and an air filter. little curious how off iam on jetting

  2. #2
    bbechtel16 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2002
    Location
    Halifax, PA
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    400

    Re: 400ex carb/350x jetting?

    Quote Originally Posted by monoxide
    removed the choke
    What? How and why?
    -'86 ATC 250SX: No longer mine... Complete 350X front end, Corbra Megaphone system, 350X carb with UNI dual stage foam & outerwear bolted driectly up, Powroll/Rocky 260cc bore 10.5 to 1 compression piston.

  3. #3
    Join Date
    Sep 2003
    --
    138

    Re: 400ex carb/350x jetting?

    Quote Originally Posted by bbechtel16
    Quote Originally Posted by monoxide
    removed the choke
    What? How and why?
    What?: removed the choke butterfly

    How: easyily. unscrew some things and it drops right out.

    Why: more air flow, and it has a fuel excellerator in it, so you dont needa choke.

  4. #4
    Join Date
    Oct 2003
    --
    19
    I have a 400EX carb for my 85 350X as well, what jets and carb settings are you running??

  5. #5
    bbechtel16 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2002
    Location
    Halifax, PA
    --
    400
    Good show then.
    -'86 ATC 250SX: No longer mine... Complete 350X front end, Corbra Megaphone system, 350X carb with UNI dual stage foam & outerwear bolted driectly up, Powroll/Rocky 260cc bore 10.5 to 1 compression piston.

  6. #6
    Join Date
    Sep 2003
    --
    138
    Quote Originally Posted by ATCXman
    I have a 400EX carb for my 85 350X as well, what jets and carb settings are you running??
    iam running a 138, moved the needle up a click, and i think a 42-45 pilot (yes i know my jetting is off)

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