94Brodyf150

What is the cfm of our factory clutch fans? Yes, I am doing electric Fans. I bought one fan with 1250 and an auxiliary with 800. Both will come on at the same time. ( I don't use a/c...period) what temp should I have it preset for on and off...I'm thinking on at 170 ish and off at 200ish, Right or wrong

rikard

The CFM can depend on which cooling package came with the truck. I think mine is about 2500-3000 Cfm, I can feel and hear it when it engages. On my old van I had the fan come on at 200 and off at 175. The sensor was located about 3/4 down the radiator tank on the cool side.
The OEM electrics seem to be better quality than many of the after market units. Use a relay and the proper size wires. An electric fan will tax your electrical system so make sure its up to snuff. I would wire the fans to come on at different times.
YMMV
rikard

Scraptor

You won t believe how much better it works without the clutch fan.
The Electric fans will run a constant speed rather than up and down with engine speed.

I think what you got should be big enough, mine came off a cavalier and cools the six just fine . I would make a bracket of some sort to support the fans off the fan shroud mounts, or off the Rad support, I don t trust the zip tie things that go through the Rad, it s a leak waiting to happen.


This how I framed the one on my Duster, junkyard fan 1x1/4" flat bar, nothing to puncture the rad, note the relay, and NHRA legal 12oz overflow tank, crude, and cheap, with a delightful lack of refinement. I need a lighter set up for that car.
the one on my truck is so crude I can t show anyone.

94Brodyf150

Looks good to me...thanks guys...I was just worried that I wasn't pulling enough cfm.

1990-5.0-4x4

i just put on an electric fan from an early 90's taurus 3.0L v-6. this things seriously sucks some juice from the system and move A TON OF air. way more than oem fan. i just upgraded to a 130 amp alt and would HIGHLY recommend it. at a min of 130 amps. mine will still dims my lights and drop my volt meter.

Scraptor

Is that the three wire, dual speed fan ? I had fits with her old Taurus burning up relays.
Lincoln mark 8 fans are killer too, and fit a 5.0 rad really well.

1990-5.0-4x4

yeah it is. i've only got the highspeed hooked up though. i've gone through a couple fuses, but still on the original replay thankfully. i was looking for a dual fan set up, but i couldnt find one. plus it was seriously freezing with freezing rain right after i got to the junkyard. lol just found the closest one to me and pulled it.

Scraptor

Try running both sides of the motor, the best I can figure, high side and low side run together, low speed runs on its own, the old Taurus we had burned out the low speed side of the motor, I wish I'd never saw that car. Without the low side of the motor the otherside has to torque way harder to get up to a speed where it runs easy, so it pops fuses, btw you can get self resetting circuit breakers thats what's on the power window, and wiper circuits, great for a fan, etc. I m too lazy to Google a pic, so look in your
fuse panel, little gray buggers.

superhemicobraboss

I run 2 electric fans on my 306 and it stays really cool. In town or on long drives

1990-5.0-4x4

what do you mean run both sides of the motor?