Fuel524

which is better a push ytpe electric fan or pull type. i think a pull type for one reason if you are driving lets say 30-40mph and your fan comes on and you have a push type you arents really pushing anything in a sense the air is just mixing around creating more heat. now as oppose to a pull type yes you are drawing air into the engine bay you arent creating a negative air force. just a thought seeing how i have a e-fan from a taurus and where i live my temp seemes to get in the middle range when driving around those speeds but with the e-fan off driving those speeds my temps run cooler. just a lil poll to see what people think???

Tanjo

You want a pull. I dont think Ive ever even heard of a car with a push.

peejay

Lots of cars have pusher fans.

I think you are thinking of "push" meaning it pushes air out towards the front of the car? Pusher fan means that the fan is on the front of the radiator and it "pushes" air through instead of "pulling" it from the backside.

Push fans aren't as efficient, partly because they block the airflow to the radiator, and partly because they do heat up the air SLIGHTLY.

purple82

It's funny to see that you said this. I was going to mention it but I didn't feel like going into why.

The short answer is it doesn't matter. Just have a good shroud.

peejay

Shrouds aren't all *that* important for an electric fan. They are important for clutch fans (but shhhhh I still have my clutch fan and I was too lazy to put my shroud back on... but hey it's wintertime still) because the fan is so far away from the radiator, but for electric fans it's not that big of a deal since the fan is right up against the radiator, so it won't be sucking air from anywhere but through the radiator. (assuming a puller fan here, I can't see shrouding a pusher fan)

Heck, lots of OEM's don't cover the entire radiator with their electric fan shrouds.

Tanjo

OHHHH. Ok I didnt realize that pushers were on the front fo the radiator.

purple82

Strictly speaking, if you have the space, you're better off holding the fan some distance away from the radiator. Then you'd want a shroud to keep the air going through the radiator anstead of off to the sides. This reduces the dead spot in flow from the fan hub and lets the flow straighten itself out a bit before going through the radiator.

The shroud also helps to reduce fan tip losses. Sometimes the fan has a ring around the outside of the blades to reduce tip losses too.

Fuel524

when you say front of the radiator what do you mean by front my e-fan is in between the pulley and radiator. anyways i think a pull type on the backside of radiator would be the best this way air can pass through the front of car with only the e-fan as a ristriction another possible solution to the taurus e-fan is to drill some hole in the portion of the shroud that is restricting flow through the radiator. i am going to do that today right now and do some troubleshoot driving around town.

peejay

Front of the radiator means just that - at the front of the car.

The back of the radiator would be where the stock clutch fan is - behind the radiator.

smnc

I'd usually reccomend a puller, simply for the higher efficiency, but I'm toying with the idea of getting an electric pusher for my car, due to the fact that there is a LOT more room for a fan in front of the rad than behind it. It'd be nice to free up some space for some of my future plans...

Tanjo

How about both?

Fuel524

yes but the problem with pushers type in front is that they block air passing through from front to back idealistically you would want one behind the radiator that pulled possibly. as for me i have a push type on the backside but i have modded it to working properly it is a taurus fan. the fan has a few dead spots that upon driving wont allow air to pass through so what i did is i removed it today and drilled holes on all the dead spots to allow air to pass through decreasing the radiator from being heat soaked before and after results are impressive at first i didnt think it would do much but it did my temp didnt move at all and my fan only kicked in 1 time normally it will about 2-4 times during 30 minutes of 0-40 mph stop and go. and it was only on for abouit 1 min. so for any taurus e-fan owners i reccomend removing the e-fan and drilling some holes on all the dead spots on the fan. tools needed drill larger drill bit ruler( to make checkerboard like lines for proper hole distance and pencil to mark lines down it really works!

Siraniko

iTrader: (13)

mechanical and electrical
OR
electric fan pusher & electric fan puller

rotary emotions

this discussion has been here a few months ago, maybe you should search for it, because everybody was saying the same back then as they do now. Which means: everybody says something else
Just don't bother about this because the thruth is: push or pull is just as good! In the other thread I posted a link to a chart of fans and all available models of that store could be ordered push or pull, and every single model had exactly the same efficiency...
I really don't know where all these stories come from about one setp being better then the other.
Plenty of cars use pushers, plenty use pullers. You should base your choice on available space, and what you just like best. But a good fan is a good fan, push or pull doesn't matter at all.

Fuel524

iiight i thought i had seen something on it but the thread is no longer here. i have figured it out mor m y scinario.