e fans and over heating

[ROCKSBITE]

i did all the research and saw what everyone is running. everything from 2 fans in an expensive shroud to 2 fans attached to the radiator..

well i pick the cheeper way. i bought 2 e fans and all the controls. the thermostat screws in to the top of the manifold. the wiring is all corect. but on the hottest day of the year when i installed them i couldnt get the truck to not over heat. the fans turned on and pulled air the correct way.

so i tore it all out went back to stock and threw it all in a box.. well now i want to up size tires and think the e fans will help give me a little more power.

i havnt found a post or bit of info leading to believe that 2 fans cant cool this motor with out the shroud! so im thinking either the thermostat is bad or i may have a clogged radiator. BUT i have NO issues with the stock fan!

 

[tonydiv]

Fully 3/4 of the equation is CFM. You need to pull enough air through that radiator. The expensive Flex-a-lite system that you mentioned pulls 5500 cfm and it STILL isn't rated for really heavy duty towing applications.

If you picked up some cheap fans, chances are that you weren't even pulling 1/4 of that.

A shroud will help pull air through the entire radiator, instead of just the area that the fans cover. It's important to make sure that the shroud, (and the fans, for that matter) are sealed to the radiator, so that they only pull air THROUGH the radiator, not from AROUND the back side of the rad.


I'm not saying that you can't find a cheap way to do this, (many have) but I will say that there is a reason that the pricey solutions are so expensive.... They work. They have been engineered by pros and use high quality components.

 

[KWT2000]

im running 2 pusher fans that only come on with the a/c they are rated at 1100 cfm each

plus i am running 1 puller fan that is therstat controlled and rated at 2600 cfm total cost is under $150 for everything and on a 100degree day in stop and go traffic the a/c stayed ice cold and the truck didn't even get hot