Re: Ford NAA Golden Jubilee 1953 - over heating

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Posted by Tony C on June 11, 2018 at 08:51:34 [URL] [DELETE] :

In Reply to: Re: Ford NAA Golden Jubilee 1953 - over heating posted by steve19438 on June 10, 2018 at 21:06:34:

Put a thermostat in after you have corrected the overheating problem. The system is designed to have a restriction so the water is slowed enough for the radiator and fan to do their jobs.

Put a light behind the radiator to get an idea how much chaff and crud is in the fins. THe center will be pretty clear but the edges and bottom will probably be plugged. The fan isn't exactly a B-29 prop. Then blow it out from the engine side.

If that doesn't work, use a remote thermometer to temp the radiator top to bottom. If you don't have one, HF has them for less than twenty bucks and are handy to have around in general. It doesn't have to have laboratory grade accuracy, you only want to register wide differences in temps.

Get the engine to temp or above. Note the temps in various spots on the radiator. You will be able to figure out which sections are plugged by gross differences in temps.

If that's the case and the header and lower tank are solid, and.......assuming you have a decent radiator shop that still boils out and/or rods out radiators take it to them. The copper in the old radiators is very high quality, the tubes and headers are stout. Same for the top and bottom tanks. I'm not going to recommend or not recommend lye, Drano, or CLR for flushing. Youtube, this site, and myriad sites on the I'net have information on their use. If by some mischance someone has installed an aluminum radiator in your machine DO NOT use those caustic cleaners.

Back in the days when machines were actually repaired and components rebuilt rather than simply replaced, many automotive shops and most radiator shops had stands where a radiator could be mounted, the radiator filled with water and the lower outlet opened quickly. The flow was timed. There were charts available determining the max/min flow rates for adequate cooling, based on size, application, etc.


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