#Electric radiator fan shroud for free#
#Electric radiator fan shroud trial#
#Electric radiator fan shroud free#

#Electric radiator fan shroud trial#

I have confidence that you can do it too, you just might be in for a fair amount of trial and error.Ĭlearance from the pulley to the fan? Not touching under torque. But they also have a million-dollar R&D budget. The air being pushed through the grille is being slowed down by most electric fans.

#Electric radiator fan shroud free#

When you're moving, the big difference is that belt fans allow almost free-flow of ambient air, whereas electric fans tend to reduce the amount of free flowing air. The rated flow of a belt-driven fan and an electric fan are apples-to-apples when you're standing still.

#Electric radiator fan shroud for free#

To get the flow from electric fans, you either need a shroud with the fans pulled away from the radiator and some mechanism for a TON of bypass for free-flow, or you mount properly-sized fans tight up against the radiator with no shroud so you have free space beside them for free flow.īut forcing all of the air to go through those strainers is a recipe for overheating. If you put a shroud on it and force the air through the fans, they might move 4000 sitting still.

The picture you show right now, if those fans can move 4000 sitting still, you might still be able to get that 10,000 cfm on the highway. If you think about it, a belt fan might move 4000 cfm when you're sitting in the driveway revving the engine, and it might move 10,000 while you're on the highway because you have all kinds of space for free-flowing air. You'll be effectively choking the passive airflow down to two small holes, each of them 50% blocked by plastic. Now you will be forcing passive air to go through those mesh baskets. If you are doing a fan style like the ones you are showing, you will likely make things much worse with a shroud. Over on the hot rod forums, I wish I had a nickel for every time I heard someone's sob story about how they put this massive electric fan on their old car and now it overheats on the highway. Electric fans are great at being active flow-generators, but often times horrible at allowing passive flow. Not only do those electric fan blades cover about half the real estate, the plastic grate behind it does as well.

It's a little like the difference between a tiny engine that spins to 10,000 rpm to make 100 hp, versus a 5.0L V8 spinning to 3000 rpm to make the same 100 hp.įirst, take a look at the electric fans you have and then compare them to a belt-driven fan. Electric fans can't really move as much air as a big belt driven fan, so they need a bit different engineering to function properly. They need to be set back from the radiator a bit for air flow, but also so they don't contact the radiator when they flex or when the engine moves under torque. Belt fans use big blades spaced far apart. I love you guys, but y'all going overboard here.įirst, electric and belt fans have to be viewed from different mindsets.