Induction- how to heat the fuel?

    Bob Mannel's book chapter-2 2-22 shows two pictures top and bottom of a carburator spacer which included provisions for heating the fuel air mixture on all 1962- 221 and 260 engine's.Ford later went to a duct with a thermo heat flap on the air cleaner which worked off the pass side exhust manifold's on the 289's to achive appox. 100 degrees.On the Hi-po's with the open air, air cleaner's how is the mixture heated?

    It's not. The heat flap in the air cleaner really helped with carb ice build up in cold damp conditions. But, if you have the factory intake, I think there is a heat crossover that runs under the carb, from one head to the other. I have not looked at a factory manifold in years, correct me if I'm wrong. It should be checked for carbon build up and blockage.

    This passage is blocked off or non-existing on most performance intakes.


    Edited by - 289kford on 03/31/2011 07:13:51

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