Cooling questions/suggestions

Add another "I bought a super cool aluminum radiator with super cool electric fans and my car overheats" post

The two 10" fans and the "shroud" are blocking more airflow than they are providing.

I guarantee you will have heat issues on the interstate.

Pull the fans and shroud off. Put even a (and I hate to say it) flex fan and 80 percent of your cooling issues are gone

If you have worked yourself into a corner with that super cool aluminum radiator, sell it to someone else and get a stock type brass / copper with stock fan whether that is thermostatically controlled or fixed, be sure it is 7 blades. 5 on a thermostatically controlled might work.

The point of the fan is to move air through the radiator.

The point of a shroud is to assist in the fan moving air through the radiator at idel or slow speeds, at 30 to 40 and above the shroud only blocks airflow. A properly engineered one will not have much effect at speed but the super cool ones that are basically flat to the back of the radiator only block air flow.

Do some math... Length of your core times height of your core, that's the square inches of your core. 17x22=374 sq in

Now take 10" diameter fan hole A =πR^2
3.1415926 times 5 (hole diameter devided by 2) squared
3.1415926x25 = 78.5 sq in ( one hole)

Two holes total 157sq in opening
157/374= .419

This means that about 1/2 of your radiator has no airflow through it. Your trying to cool a 318 with a radiator for a Toyota Corolla from the 80s.


The Chrysler engineers figured out how to cool a 440 in a 69 dart, maybe they know something. Use what the factory manufactured for the application and don't have issues.


RANT OVER!