Replacing stock coolant fan with electric fan

[skythegod]

I know how to do it I just need to know how powerful does it have to be?

[seang]

My E-fan draws less than 4 amps. It in a pickup truck with ka24e. The fan itself is one of two that were next to each other in my GF's broke down Nissan Sentra that I got for free. I only used one of them.

I live in a cool climate, so it does okay. The fan is dual coil, so I could double the amperage draw (and fan speed) by running both. They are nice Calsonic made units.

I have it wired directly to a toggle switch that I have to control all the time. A thermo-switch wouldbe more practical, especially in heavy traffic where it's easy to forget to look down at the temp gauge. On a country road, it's no big deal to monitor it all the time.

I kept my clutch fan around just in case this old e-fan takes a dump on me. They are from 1994 after all.

It freed up maybe a few lb.ft. of torque, and it's not as loud.

Here is my thread... zerothread?id=437764

There has to be others

[skythegod]

can't you just connect the fan to the fuel pump fuse and make it turn on whenever the car is on?

[seang]

You don't want to overload the fuel pump circuit.

I think you can hook it up to the ignition switch, but IDK how exactly.

I wouldn't do this on my truck, it's just too damn cold sometimes.

Some e-fans draw alot of amps, these are for high performace turbo, v8, and towing applications. I don't tow trailers and my motor is stock, so my 4 amp fan is enough for me.

My truck's radiator is also in an ideal position to be bombarded with fresh air, unlike the 240sx which is aerodynamic enough to move air away from the radiator, probably. I can't say which fan would be the best for you.

The best thing is a fan that draws the least amount of amperage while still being powerful enough to cool the radiator. Overkilling it is just drawing more current from your alternator, and more hp from the tires.

Keep your engine fan around just in case you want to go back to it. Nothing cools like the clutch fan.
Modified by seang at 8:04 PM 11/28/2009

[localtechyguy]