Hey all, im a lil lost and i really couldnt find any info, but if you have a thread please send it to me thanks, OK my ? is this, i want to throw a fan on my ic i have the ARC RACE SPEC SMIC and later ill be droppin my t-78 in so i need max efficancy while staying with the SMIC. I want to buy a 8 inch fan to go on the back of the IC, but i dont know if i want to pull the air away or push the air onto the IC, im thinking with the hot engine bay air it will be beter to pull it off the IC, what do you guys think? Oh yea the specs for my SMIC are: W 13.5 CORE X H 12 X THICK 4 INCH


7 BOUND

 

i think goodfellafd3s was selling a good fan for this purpose.

 

Mine (PFS intercooler) is set up to pull the air thru.

At a standstill it's drawing air from the duct routed to the radiator opening.
In motion the ram air flow easily over comes it.

If you set it up to blow in reverse, it's drawing warm air from the engine bay. With the car in motion the fan would be working against the air flow.

BTW it's "BRAKES" not Breaks in your sig.
Plus, Hawk HPS are technically Brake "Pads"

 

HAHAH THANKS sled driver i didnt know that, ill chage that up right now, good to know that others are looking out for you, GOD BLESS you guys thanks again

 

He was talking about the fan pushing air thru the intercooler mounted in front or pulling air thru mounted in back, same air flow direction.

 

http://www.maxcooper.com/rx7/how-to/ic_fan/index.html

 

Good point, sorry.

I mounted the fan on the back & have it pulling the air thru.

The idea was not to block the incoming air with the body of the fan.

Now some will argue that the fan body impedes airflow in any position.

Look at it this way. The air has to flow thru the core prior hitting the fan. The inlet of the core is wide open to allow maximum airflow & cooling.

If the fan were mounted on the front, besides clearance issues with the duct, the air flow would be choked off prior to flowing thru the core.

 

Besides the point that Sled Driver mentioned, you get more efficiency from a pull-type fan setup than a push-type, because the airflow is already slowed down by the radiator, and you're not creating turbulence at the surface like you would with the push-type. It's the reason that the vast majority of OEM setups are pull-type.

 

If you do not seal the fan to the backside of the IC it will only recirculate hot underhood air thru the core, the hot underhood air gets pulled in around the outside of the fan. This happens because of the restrictive duct making it easier to pull air thru the IC cor than from the duct inlet. Only works well to cool the IC down with the hood up unless it's sealed well to the IC core, look at the stock radiator for example.

In the duct I would expect the effect to be similar unless it's sealed to the duct or the front of the IC core.