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Subject: Ford NAA Golden Jubilee 1953 - over heating

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Rusty    Posted 06-10-2018 at 19:08:52 [URL] [DELETE]        [Reply] [Email]  
  • Ford NAA Golden Jubilee 1953 - over heating
  • I have a Jubilee that is having a problem with overheating. The thermostat is not sticking because it doesn't have one in it. I have thoroughly flushed the radiator and the block. I am still having a problem with overheating. I have also replaced the water pump and cooling fan but, still having a problem. Does anyone have any advice to fix said problem. Also there is not a leak from the head gasket.

    Bruce Dorsi    Posted 06-11-2018 at 20:58:47 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Check the ignition timing at idle and at higher rpm to verify that the centrifugal advance is working.

    Improper ignition timing can, and usually will, cause overheating.

    Rusty    Posted 06-11-2018 at 22:29:13 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Thank you, will have to check the timing.

    Tim Daley(MI)    Posted 06-11-2018 at 04:06:44 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • You should always use a thermostat. Often overheating is caused by overfilling or underfilling. Is it original 6V/POS GRN or a 12V switchover job? Either way, have you checked the fan belt tension? Do you have the correct fan belt? Often times 12V jobs use the wrong fan belt. Does the radiator leak?

    Tim Daley(MI)

    Rusty    Posted 06-11-2018 at 22:16:09 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • It is a 12 volt switch, belt tension is good and the radiator does not leak.

    steveVa    Posted 06-11-2018 at 00:30:02 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Can you see water circulating in the radiator when it is cold. Radiator could be clogged for fluid flow inside or for air fliw outside. Under what condition does it over heat?

    Rusty    Posted 06-11-2018 at 22:30:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Thank you for info.

    steve19438    Posted 06-10-2018 at 21:06:34 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • is it possible the rad. cooling fins are clogged? maybe wrong belt size?

    Rusty    Posted 06-11-2018 at 22:20:29 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Fins have been cleaned. I'll check the belt.

    Tony C    Posted 06-11-2018 at 08:51:34 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • 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.

    Rusty    Posted 06-11-2018 at 22:27:14 [URL] [DELETE]        [Reply] [Email]  
  • Re: Ford NAA Golden Jubilee 1953 - over heating
  • Thank you, this info is very informative and will have to see if this will work.

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