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Thread: over heating

  1. #1
    Join Date
    May 2007
    Location
    sunshine state
    Posts
    93

    Default over heating

    I am helping someone out. this thing overheats in 15 laps, first ti was throwing the belts, put aftermarket ps pump on no belt throwing issues. my question is on the crank and water pump pulleys. 1-1 or 20% reduction? i also have a 3/4 restrictor in it. any help would be good and apreciated thanks mark
    mark41

  2. #2
    Join Date
    May 2007
    Location
    Illinois
    Posts
    1,690

    Default

    I had better luck with reduction pulleys, other things to consider...
    What radiator?
    What water pump, stock or hi flow?
    What type of fan?
    Any openings in the nose?

  3. #3
    Join Date
    May 2007
    Location
    Guysville, Ohio
    Posts
    391

    Default

    Go to Stewart's website, excellent tips there. I will say they do not recommend any restrictor. They say nothing or a racing t-stat in the neck. I went to nothing in the neck and it fixed my problem.

  4. #4
    Join Date
    May 2007
    Location
    sunshine state
    Posts
    93

    Default

    it has a stock short pump on it, 28 inch afco radiator,appears to have a smaller crank pulley than water pump pulley and 3/4 restrictor. when he changed the power steering pump from a stock one to a race pump they put the pulleys on it, this is when the overheating started. previously it would throw the belt off and the reason for changint to the race pump.
    mark41

  5. #5
    Join Date
    May 2007
    Location
    Auburn, IL
    Posts
    2,854

    Default

    single or double pass radiator, no restrictor, 1:1 pulleys, 4 blade fan with a good shroud with the blades half in on/out the shroud should fix your problems. Also check your plugs to ensure your not too lean and timing is not over 36 degrees.

  6. #6
    Join Date
    May 2007
    Location
    sunshine state
    Posts
    93

    Default

    its a single pass radiator. no restictor? i did a lot of the things you suggested and what a difference it made!! I am in the process of building them a new chassis, the old one is bent i the right rear corner down about 1 5/8"...
    mark41

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