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  1. #1

    Join Date
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    Jett SS .40 426 motor

    I got a new motor and want to swap the venturi out for a barrel carb.

    Having a heck of a time getting the bolt / nipple out. Nut comes off, nipple comes off, but can't get the main bolt out...

    Any ideas? Tried Dub today, but got his machine.
    Dave Norman
    29w

  2. #2
    Randy Etken's Avatar
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    RE: Jett SS .40 426 motor

    Hi Dave
    The Jett is different than the Nelson, take nut off and take the venturi out. The bolt will now come out.
    Randy
    Randy E.
    www.Q500Racing.com

  3. #3

    RE: Jett SS .40 426 motor

    What props are you running
    Kevin Matney 2 wrongs don't make a right But 2 Wrights make an Airplane
    www.Matneymodels.com

  4. #4
    Randy Etken's Avatar
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    RE: Jett SS .40 426 motor

    8.8X8.75 or on a very warm day try 8.8X8.5. Want your ground RPM's high 18,000 to low 19,000.
    Randy E.
    www.Q500Racing.com

  5. #5

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    RE: Jett SS .40 426 motor

    Thanks Randy, just what I needed.
    Dave Norman
    29w

  6. #6

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    RE: Jett SS .40 426 motor

    We have to run the carb for our rules. I was wondering if anyone is having adverse (air leak) issues with no o-ring or gasket material under the carb? I noticed there wasn't one under the venturi either - just relying on the fit?

  7. #7

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    RE: Jett SS .40 426 motor

    The fuel actually comes in under the carb. The carb is really just an air valve allowing the engine to be choked off to kill. Don't think that no air seal around the carb or venturi is an issue at all


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