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65 352 exhaust manifold

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  • inventoryboy
    Newbie
    • Dec 7 2014
    • 5

    65 352 exhaust manifold

    I have two small tubes coming off the exhaust manifold on the passenger side of the car. One goes to the automatic choke and the other tube comes out and turns down towards the back of the manifold. It does not hook to anything now it just ends. It has suction in it but don't know what it is for. Does it connect to something, trans, some other vacuum operated item?? thanks for any help.
  • simplyconnected
    Administrator
    • May 26 2009
    • 8811

    #2
    I never liked this system. They're called stove pipes and they are supposed to pull heated air off the exhaust manifold. The carb sucks it up and around a bi-metal 'spring' sets the choke. One problem with carburetors is, you need to push the gas pedal to set or release the choke, which is fine if you are driving a cold car.

    In Michigan, we immediately start our engines, then we use that warm-up time to brush snow and ice from our windows. If the car is left to run, it starts racing because the engine is warmer. A simple push on the gas pedal releases the choke, but you have to be there with your foot. Aahh, the days of carburetors...

    Some restorers use electric chokes because those stove pipes rust away. They simply connect +12 to the bi-metal cover. The idea is, by the time electricity heats the spring, your engine should be warm. Of course, if your engine died, the electric choke would never know it. Otherwise this 'blind' method works. - Dave
    Member, Sons of the American Revolution

    CLICK HERE to see my custom hydraulic roller 390 FE build.

    "We've got to pause and ask ourselves: How much clean air do we need?"
    --Lee Iacocca

    From: Royal Oak, Michigan

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    • Yadkin
      Banned
      • Aug 11 2012
      • 1905

      #3
      One tube goes to the choke and the other picks up filtered air from the air cleaner assembly. Cold filtered air is drawn through the heat exchanger on the exhaust manifold, back up to the choke to heat the bi-metal spring, powered by the higher intake manifold vacuum at the base of the carburetor.

      There is usually a hot water hose that passes on the outside of the choke as well to keep it hot during operation.

      Comment

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