Cooling Fan Push or Pull

[NinJa_FLiP]

Finally got my 92 Accord w/h22a1 running right, but I just found out that both fans are dead. I hooked them up straight to the battery and nothing. So I'm looking at getting 2 slim fans (maybe 12") but I saw that they can be wired to either push or pull. I don't know whether I want them to push or pull, so if someone can help me out, that would be great. Tried searching through different threads and couldn't find the answer. Thanks everyone...

[visualpoet]

They should pull air from outside the car through the radiator into the engine compartment.

[slammed4thgen]

They should pull air from outside the car through the radiator into the engine compartment.

if they pushed they would pour engine heat into the radiator canceling the purpose!

[PR CB7]

from my point of view

you want to know whats better?
to mount the fans behind the rad(pull)
or to mount the before the rad (push)


if you can get them behind, go ahead (clean look), be careful on the type of fan you choose just because is a slim fan does and doesnt mean is better
look at the fans CFM b4 buying

also dont have them running all the time, you'll over spin them after 50mph

[slammed4thgen]

from my point of view

you want to know whats better?
to mount the fans behind the rad(pull)
or to mount the before the rad (push)


if you can get them behind, go ahead (clean look), be careful on the type of fan you choose just because is a slim fan does and doesnt mean is better
look at the fans CFM b4 buying

also dont have them running all the time, you'll over spin them after 50mph

yeah, i forgot to tell you that lol.

id hook one up like the oem one is, and one on a switch so if needed you can turn it on or off.

[Teddy]

if you mount the fan on the inside [stock location ]it`s pulling ..if you mount it behind the grill on the radiator it`s pushing .. hope this helps...i like the stock location if you have the room

[visualpoet]

if you mount the fan on the inside [stock location ]it`s pulling ..if you mount it behind the grill on the radiator it`s pushing .. hope this helps...i like the stock location if you have the room

It doesn't matter where you mount them, it's which polarity you wire the motor that decides whether it pushes or pulls.

[PR CB7]

It doesn't matter where you mount them, it's which polarity you wire the motor that decides whether it pushes or pulls.

it depends on the way the wings are on the actual fan

a fan that used for pulling air, if you invert polarities it might push air an a 360 degree all around the base instead of forward

[visualpoet]

it depends on the way the wings are on the actual fan

a fan that used for pulling air, if you invert polarities it might push air an a 360 degree all around the base instead of forward

WHAT? It's a fan, if you spin it one way, it pulls, if you spin it the other way it pushes. That's why ceiling fans have a reverse switch.

[PR CB7]

that type of fan is only good for pulling, it sucks on reverse polarity
unlike an OEM one

[NinJa_FLiP]

Ok, got it fellas. Thanks for everyones input! Now I know what to look for.

[visualpoet]

that type of fan is only good for pulling, it sucks on reverse polarity
unlike an OEM one

How do you figure? I've been doing HVAC for over 7 years, and I've never seen a fan that worked less efficiently in one direction. Those blades move just as much air either way they cut through it. I'd have to see it for myself before I'd believe it.
Now, if the motor isn't designed to run as efficiently with the polarity reversed, I could maybe see it, but the fans the OP was asking about are designed to run either way, hence the question about wiring them to push or pull.

[PR CB7]

i tested w a digital temp gauge,

the same fan as you see in the picture

in a pulling position it took 1.45 seconds to shut off (OEM FAN SWITCH)
in a pushing position it took 2.94 seconds to shut off
wo no condenser fan pushing again 2.80 seconds to shut of

OEM fan, OEM location took 1.20 seconds

maybe i tested it wrong, but thats what i base my results with

[NinJa_FLiP]

Woah, its getting pretty technical in here. lol.. One more question.. I have an aftermarket aluminum radiator, but not one of the racing ones like Koyo or Mushimoto, mine has the plastic end tanks. My question is, are 2 small fans completely necessary or will 1 big one suffice and how much CFM should I look for if I go with 1 or 2? This car, is going to be a daily driver and visit the track only a couple times a year.

[PR CB7]

Woah, its getting pretty technical in here. lol.. One more question.. I have an aftermarket aluminum radiator, but not one of the racing ones like Koyo or Mushimoto, mine has the plastic end tanks. My question is, are 2 small fans completely necessary or will 1 big one suffice and how much CFM should I look for if I go with 1 or 2? This car, is going to be a daily driver and visit the track only a couple times a year.

just get the stock OEM one and leave it, condenser fans is....... well for the condenser


still 2 small fans should suffice, fans, bigger rad, ETC your thermostat is what controls your temp, and fans are mainly for idling or standing still, once you get rolling they'll shut off