View Full Version : Fans on a Intercooler

11-20-2012, 05:48 PM
When mounting fans on an IC is the best way to mount in front as a pusher or in the back as a puller. Does one way or the other create more air blockage?


Ira R.
11-20-2012, 05:50 PM
Depends some on your setup. I have a pusher in front of the IC and a puller behind the radiator. I like to think they work somewhat in tandem.

11-20-2012, 06:27 PM
I've got 2 fans setup as pushers, rarely even turn them on.

11-20-2012, 06:34 PM
Actually it would be for heat exchanger not a IC but I figured same principle


11-20-2012, 07:00 PM
Maybe a wives tale but I have always had it in my head that a bladed fan was always a better puller while a squirrel cage type fan was a better pusher??

11-20-2012, 07:06 PM
Something I was told, if the device being cooled is in a good natural air path. You want the fan in the back if possible. The cooling fan in front will have a greater effect on airflow when not being used. In front it will tend to deflect some air away in addition to causing a restriction in the airflow to the device. Where the fan behind will not have this deflection effect, it will just be a restriction.

11-20-2012, 07:14 PM
its much more efficient to suck air through an orifice rather than blow

basic principle of airflow

11-20-2012, 07:36 PM
Good info guys, Thanks


11-21-2012, 12:05 PM
So now let us think about how a IC is mounted in conjunction with a radiator and quite possibly a condenser (in ken's case he doesn't have one).

Are you guys recommending putting the IC far enough away from the radiator to allow a puller fan?!?

In this application I would think we would want to go with the route of a pusher.

11-21-2012, 12:27 PM
I think you will have better luck asking Cobra guys this question, since all of us are air to air except a couple.

11-21-2012, 12:28 PM
I think you will have better luck asking Cobra guys this question, since all of us are air to air except a couple.

Whats a Cobra guy:D:D:D


11-21-2012, 01:41 PM
I have a full size griffin radiator in my dad's marauder with a 16" pusher fan on it and it still runs 100 IAT before a run in 70* weather. Now the IC is sitting down in a 200* motor so I'm sure that doesn't help. This winter I will try to fabricate a ice tank in the trunk. I am thinking of keeping the IC water a closed system with antifreeze and running a heater core in a tank in trunk so I can drain and fill the ice as needed.




11-21-2012, 01:51 PM
You really don't need fans on intercoolers if it's a good size and in front of the radiator support.