Quote:
Originally Posted by Rayfry
My 49 Ford with a flathead V-8 runs on the hot side after about a 30 minute ride. It never reaches the full hot on the gauge but it is closer to the hot than the cold side of the gauge. Is this the way most flathead V-8s run or am I going to have to correct something to cool it down. New purchase and was told the engine was rebuilt.
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I would start with attempting to determine what the temp actually is. An IR heat gun is a good approach. They are fairly cheap and easy to use. Check the temperature at the head connection to the upper hose to top of the radiator. It is also informative to check the top section of the radiator and the bottom section of the radiator. The original gauge is not going to tell you much as far as actual engine temperature is concerned. I would shoot for around 185 to 190 operating range.