My 1974 BMW 2002

From shell to road, the rebuilding of a classic automobile my way.

Electric Fan Install

This the 12" one, it works but the 14" would be better. Even though this says it is an Imperial cooling fan, I think it is actually made by Hayden, as the mounting pieces all say Hayden. I got the 12" one because I didn't think the 14" would fit. Apparently it does thought since Jim K in Denver is running a 14" on his sweet 71.
This the box the fan came in. Got it at Advance Auto parts for about $70.
The install was actually quite easy as was the electrical. Since it does have a quick connect plug it would be best to get most of your wiring done first and test the fan. As you can see mine is located in front of the radiator so it has to push the air through. Also called a pusher. The other option is a puller that would be on the engine side of the radiator. Mine did not have enough room on the other side even with the engine fan removed.
 
I had to turn the fan around, which is quite easy if you follow the directions, and redo my wiring in order to get the fan to turn the right way and be most efficient.
 
Mounting the fan requires that you push the plastic mounting wires through the radiator fins. It doesn't hurt the radiator if you do it right. You then put the caps on and secure them in place.
 
Once you have everything in place it is time to hook up the temp sensor. Even though I have the 320 radiator with the sensor on it I didn't use it. I wanted a little more control over the temp so I bought a temp control unit, about $18, and installed it. It goes in line with wiring and has a heat sensor that you push into the radiator. It also works if you put it near the radiator as I saw with Keith's (of my2002tii.com) MG.
 
Setting the sensor is quite easy, fire up your car and turn the control knob on the sensor all the way in one direction. As your car heats up start tweaking with the knob until it turns on the fan. From there adjust it until you get the operating temp you like. Mine is just under 3 o'clock.