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Thread: Primary Throttle Shaft

  1. #1

    Default Primary Throttle Shaft

    I have an Ultra HP the was converted as a blow-through carb. I have a remote TPS sensor that's supposed to connect to the end of the primary throttle shaft. Of course, what do I find, the ultra throttle shaft does not go all the way through the throttle plate. There's a brass looking plug in the hole where the shaft comes through on normal 4150s. Can I replace the shaft with a 4150 shaft. Will the bushing for the shaft fit the hole where the plug is. Or do I have to replace the whole throttle body plate with a normal 4150 plate. Thanks.

  2. #2
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
    Posts
    1,750

    Default

    Rick, remove the primary shaft, drill a small hole in the plug, fit a tight self tapping screw, pull the plug. Then a stock high flow 4150 shaft can go in place of the shortened factory shaft. Gary
    Regards, Gary

  3. #3

    Default

    Thanks Gary.

  4. #4
    Join Date
    Jan 2010
    Location
    Brisbane, Australia
    Posts
    1,750

    Default

    You're welcome.
    Regards, Gary

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