Thermo fan questions

[Pazuzu]

Hi All.

Anyone on this list installed a thermo fan in a 2-litre Mk 2 Escort? Can anyone recommend brands, styles, fan positioning etc.?

Cheers & Beers.

[Puzzlescort]

I run a Davies Craig fan on the front of my radiator which just copes.... are you going just as a booster fan or stand alone? is it highly modified ??

Stand alone look for the highest air volume fan that will fit!

if its just as a booster look around at pinch part for a front mounted thermo fan off a late model car

[Pazuzu]

Just as a booster fan. The engine isn't really modified at all as yet, I'm just doing a little research & gathering parts, with a planned carby conversion, headers & new exhaust system on the way, but nothing planned yet for the motor itself. The temperature gauge climbs a fair bit to the worrying end of the scale when stuck in Brisbane traffic, my boss suggested getting a thermo fan fitted to help alleviate the problem (now that summer's on the way...).
I've heard arguments about where to mount thermo fans- some say in front of the radiator, some say behind. Anyone have 2 cents to throw in?

[Quickshift]

Originally Posted by Pazuzu

Just as a booster fan. The engine isn't really modified at all as yet, I'm just doing a little research & gathering parts, with a planned carby conversion, headers & new exhaust system on the way, but nothing planned yet for the motor itself. The temperature gauge climbs a fair bit to the worrying end of the scale when stuck in Brisbane traffic, my boss suggested getting a thermo fan fitted to help alleviate the problem (now that summer's on the way...).
I've heard arguments about where to mount thermo fans- some say in front of the radiator, some say behind. Anyone have 2 cents to throw in?

Greetings,

With any finned tube forced air convector (radiator), there is a manufacturer's design tolerance called fouling factor, which is the allowance of additional cooling surface area, to accomodate in service fouling. After years of service the internal fouling of the tubes in the radiator by rust and scale and the deterioration of the fins, inhibit the effective exchange of heat to the air.

Due to this it may be prudent to have your radiator cleaned, cooling system flushed, thermostat checked/ replaced and the cooling system filled with coolant. When the cooling system is working efficiently, the engine should not overheat, as the system was designed to handle the heat rejected into the coolant, at ambient temperatures of up to 40 degrees C. Should you wish to modify the engine to extract more power, then you would be advised to increase the size of radiator to allow for the increase in heat rejected into the cooling system.

Placement of the electrically powered fan depends more on whether the fan pushes or pulls the air. The operational efficiency is basically the same whether it is mounted fore or aft of the radiator.

Regards Wayne