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Air Cleaner Vacuum line connection?
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f117rt



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    Post: #1
    Air Cleaner Vacuum line connection?

    When I took my air cleaner assembly off of my 351C with 2V, the vacuum line that connects to the bottom of the air cleaner was disconnected before I had achance to see where it was connected.
    I check the Ford Shop Manuals and it just says that it connects to the "vacuum source".

    Can anyone please point out where this connects to?

    Thanks.
    Offline 09-08-2010 04:15 PM
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    72HCODE


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      Post: #2
      RE: Air Cleaner Vacuum line connection?

      If you have the standard v2 air cleaner there should be one flapper door for the heat riser, the air intake. When the engine is cold the flapper should be closed which allows air flow from the heat riser coming off the exhaust. This heats the incoming air to help a cold motor warm up faster.
      When the engine heats up a bimetal heat switch kicks on which shuts the vacuum signal to the heat riser flapper and closes the heat riser down so cooler air flows into the intake.

      There should be a hose going from the flapper motor to a metal vacuum switch with 2 ports one port is taken by the flapper hose the other to full manifold vacuum source.
      Offline 09-08-2010 10:04 PM
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      f117rt



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        Post: #3
        RE: Air Cleaner Vacuum line connection?

        (09-08-2010 10:04 PM)72HCODE Wrote:  If you have the standard v2 air cleaner there should be one flapper door for the heat riser, the air intake. When the engine is cold the flapper should be closed which allows air flow from the heat riser coming off the exhaust. This heats the incoming air to help a cold motor warm up faster.
        When the engine heats up a bimetal heat switch kicks on which shuts the vacuum signal to the heat riser flapper and closes the heat riser down so cooler air flows into the intake.

        There should be a hose going from the flapper motor to a metal vacuum switch with 2 ports one port is taken by the flapper hose the other to full manifold vacuum source.

        Yes, thanks.
        Where or which is factory "manifold vacuum source"
        Offline 09-09-2010 09:46 PM
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        Joe



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          Post: #4
          RE: Air Cleaner Vacuum line connection?

          The vacuum source is a port on the vacuum tree behind the carb on the intake manifold, near where you also get vacuum for the brake booster and transmission vacuum modulator (if so equipped).
          Offline 10-02-2010 11:47 PM
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          f117rt



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            Post: #5
            RE: Air Cleaner Vacuum line connection?

            (10-02-2010 11:47 PM)Joe Wrote:  The vacuum source is a port on the vacuum tree behind the carb on the intake manifold, near where you also get vacuum for the brake booster and transmission vacuum modulator (if so equipped).

            Thanks!
            Offline 10-03-2010 04:15 PM
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