Which electric fan?

[Kingb]

I have a M20 with a radiator from an AC car and have the Aux fan zip tied to my radiator right now but it is not wired. I have been looking on summit. But what fan do I get and from where? I have the 75 degree thermostat and ordered the 82? temp switch from pelican which is in the mail. I want to get a different fan and fan install kit. I Don't want to learn the hard way. Help please

[e30guy]

The aux fan should measure 16" and Spal fans seem to be popular with people that convert from clutch fan to electric.

http://www.a1electric.com/catalog/cat_spal.htm

[jlevie]

Don't try to mount a fan directly to the radiator fin tubes. In time those mounts will wear a hole in a fin tube and you'll have to replace the radiator.

In cooler climates a 16" fan rated for 1800cfm will suffice if the car doesn't have A/C. If it does or the car is located in a warmer climate, go with a 16" fan rated for 2300-2400cfm.