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EFV-8 Club Forum / General Ford Discussion / using an electric fan

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Discussion Topic: using an electric fan

georgeod1

05-03-2019 @ 11:18 AM

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My V8 overheats in parades where temperature is above 90 degrees. I am considering installing an electric fan.

What is recommended, a push or pull?

Any brands found to work better than others?

sarahcecelia

05-03-2019 @ 12:00 PM

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(1) Buy 2 quarts of Thermo Cure. (2) Drain your coolant. (3) Add the Thermo Cure and top off with water. (4) Drive the car, and put at least a 1/2 hour or so on it. ( 5) Let it sit a a coupe of days, or so. (6) Drain the system and watch all the dirt come out!!( 7) Leave the drain open, and put the garden hose in the top of the radiator and fill the system-when it's full, just keep enough water flowing in enough to keep it from overflowing. (so the fan won't spray water all over the motor) (8) Start the motor and run it until the water runs CLEAR!! (9)Shut the motor down and let it all drain out (10)Let the motor cool down a bit. 30-45 minutes or so. (11) fill the system with 50/50 anti-freeze. (you might find that you need a quart or so of water to top it off. If so, USE ONLY DISTILLED WATER!!) My cars-2- 1950's, 1 -1940 and 1- 1957, NEVER EVER OVERHEAT, and I'm in Florida!! My 50's, and my'40, with flat head V 8's , run with the needle just a needle width below the 3/4 mark, and I can let them idle for hours!! In their day, these cars were in Arizona, Florida, and Hawaii, and never had an overheating problems!! That flat heads overheat is an "Old Wives Tale!! If they do over heat, something is not right!! Fix it!!

Regards, Steve Lee

kirkstad

05-04-2019 @ 7:12 AM

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I mounted the fan in front of my radiator on my 36, because I wanted to retain my stock fan. It pushes the air tru. I also use plain distilled water in the summer, along with CRC additive to prevent rust and help lube pumps.My car has never overheated even before mounting the fan,but after about an hour into a long parade the coil would overheat because of its location. The air from the electric fan keeps it cool.I no longer have to put a cold rag over the coil to get going again.
Frank

supereal

05-04-2019 @ 2:38 PM

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If you haven't changed to the improved "turbine" water pumps, it is a better solution than an electric fan, in most cases. The main problem with electric fans is the high current demand that most original charging systems can't provide, usually 30 amps or more. Overheating in parades or heavy traffic where engine speed is low reduces cooling circulation below the ability of the system to operate properly.

GK1918

05-06-2019 @ 5:21 AM

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Just my thoughts; no fan or wetter water will cure a block loaded with years of sediment from stop leak, putting saw dust. pepper, eggs and all those quick
fixes back then, that also plugged up the radiator. I say you need to back
flush the block and radiator with a special tool that uses water and shop
air around 15 or so psi. and watch out what will come out. One side at a
time from the lower hose and if you have thermostats take it out . I'm
sorry but a garden hose just does not have the jolt or the shock of a reverse
flush / years of sediment almost has to be jack hammered ; I bet there is
3-4 inches of dry compacted material in there that a garden hose won't touch....Think of, its like a septic tank with two feet of sludge on the bottom
always caused by washing machine soap dishwater soap no good, bacteria
gets killed by soap. Engines get sludge by poor maintenance, back then.

georgeod1

05-06-2019 @ 3:10 PM

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Thanks for responding. I have rebuilt the engine (less than 500 miles on it) and radiator has a new core.

trjford8

05-06-2019 @ 4:59 PM

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If you are 12 volt and have an alternator I would buy a Cooling Components brand fan or a Cooling Solutions brand fan. Both have their own shroud and are "puller fans". They make different models due to the different width of radiators. They pull a lot of air and I think they are the best fans on the market. You do need an alternator and they need a 70 amp relay.

georgeod1

06-04-2019 @ 3:11 PM

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Thank you for your response. I will research the two fans you suggested.

40cpe

06-04-2019 @ 6:45 PM

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I have a Cooling Component puller fan on my '38 with a 276" engine. It has a head mounted sensor set to come on at 195. When the fan comes on the temp starts dropping. They have a 4" clearance model that only requires a 40 amp relay while the 2 7/8" version requires the 70 amp. With some careful measuring you might can use the 4" motor, I did. My engine was throughly cleaned at rebuild and my radiator was cleaned/checked.

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