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Thread: 350x carb mod on 250sx

  1. #1
    Join Date
    Jun 2008
    Location
    Lewiston, N.Y.
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    1,479

    350x carb mod on 250sx

    Is any miss required or is this bolt and go? Any real advantage to this seeing as the sx is not really a sport trike? I have a fresh top end with a Rocky brand dome piston and a full supertrapp, for what its worth

  2. #2
    Join Date
    Oct 2002
    Location
    Northeast
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    17,493
    Yes, in your case it will allow more air and more gas (jetted up).

    You lose the cable mounted choke and the stock 350X choke has to be bent/ground to work but you will have gains over the stock carb.
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  3. #3
    Join Date
    Jun 2008
    Location
    Lewiston, N.Y.
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    1,479
    Just getting up to speed quicker ? Or do I gain 3 power bands?

  4. #4
    Join Date
    Oct 2002
    Location
    Northeast
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    17,493
    Quote Originally Posted by userj8670 View Post
    Just getting up to speed quicker ? Or do I gain 3 power bands?
    "3 power bands" My god, this is why I usually don't answer these questions..... I hope you were kidding.

    It will rev faster and get places quicker. The power, is adjustable by the amount of discs in your Supertrapp. You can get more low end or top end, but the SX is not a fast machine unless it's in the back of a truck.

    Your question was, is the carb an upgrade, and in your case it is.......
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  5. #5
    murfman is offline Just Too Addicted Arm chair racerJust too addicted
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    Apr 2011
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    After rebuilding both my 350x and 250sx carbs it looks like the cable operated choke can be adapted to the 350 carb, but I did not look too closely.

  6. #6
    Join Date
    Jun 2008
    Location
    Lewiston, N.Y.
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    Yes it was meant as a joke

  7. #7
    Join Date
    May 2011
    Location
    eden,ny
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    3,481
    Quote Originally Posted by userj8670 View Post
    Yes it was meant as a joke
    I hope it was ! with that setup you could easily exspect 4 or 5 powerbands and maybe more! lol

  8. #8
    briano is offline Got The Holeshot Arm chair racerJust too addicted
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    May 2010
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    Michigan UP
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    1,005
    For more power you could take out the power band and put in a super strong rubber band. Lol

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