Use a puller fan.
Radiator auxilliary fans
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,472
Likes: 18
From: Lake Ozark, MO
Radiator auxilliary fans
What is the best way to mount auxillary cooling fans - pushing or pulling air thru the radiator? The guy I bought my BB from had the 2 electric fans pulling air (engine side of radiator) thru the radiator. I have the car apart and want to put it back together to cool the best. My logic is to push air through??
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Originally Posted by Hvymtlc5
What is the best way to mount auxillary cooling fans - pushing or pulling air thru the radiator? The guy I bought my BB from had the 2 electric fans pulling air (engine side of radiator) thru the radiator. I have the car apart and want to put it back together to cool the best. My logic is to push air through??
Le Mans Master
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
Racer
Joined: Apr 2004
Posts: 271
Likes: 0
From: Alpharette GA
Most (I believe) are referring to a puller mounted on the engine side of the radiator. If you mounted a pusher on the engine side (you are right) it would be impended as it would be pushing against the normal air flow.
A pusher fan on the front side (head light side) of the radiator would be just as efficient as a puller but their is a space issue with the hood in the open position their not enough room on the upper half of the radiator for a fan.
A pusher fan on the front side (head light side) of the radiator would be just as efficient as a puller but their is a space issue with the hood in the open position their not enough room on the upper half of the radiator for a fan.
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,472
Likes: 18
From: Lake Ozark, MO
Good point. The flex-a-lite fans are reversable. I had the hood off while everything was coming out and didn't notice that there may be a clearance problem if the fans were mounted on the "outside" of the radiator (logical place to put them in my thinking).
Le Mans Master
Joined: Mar 2004
Posts: 7,502
Likes: 1,510
From: Little Rock AR
The General likes "puller" fans. I have both the engine mounted factory "puller" one and the factory auxiliary electric "puller" fan on my '80 L-82.
I "think" pulling is more efficient from a fan performance issue. Probably has something to do with the open area behind the fan creating a low pressure area vs high static pressure from blowing directly at a radiator. I used to design HVAC equipment so I realy should know this.
I bet it is something like that.
-Mark.
I "think" pulling is more efficient from a fan performance issue. Probably has something to do with the open area behind the fan creating a low pressure area vs high static pressure from blowing directly at a radiator. I used to design HVAC equipment so I realy should know this.
I bet it is something like that.-Mark.
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