Any luck with ebay slim fans?

I've always used push-through mounts. With the crappy radiators i use, the plastic end tanks give out far before the push-through mounts becomes a problem.

Here's a weird question. Couldn't you install a 1" thick shroud on your radiator with an outlet on the side much like an intercooler pipe, and then run that to a bullet style inline fan (that was rated accordingly) that is mounted somewhere in the engine bay, pushing air either through a vent in the hood (which I already have) or out into the fender liner area?

Here's a quick sketch of what I mean. That pipe would go to an inline fan that was remote mounted. Also, there would be flaps (not pictured) on the shroud to facilitate air moving through the shroud when the fan was off. Black is the radiator core. Silver is the shroud.

I think you could. I just think you would need a stronger inline fan to get the same job done as a conventional fan, and i think pulling air through the path of least resistance means the airflow would be less evenly distributed through the core.

Interesting idea. I'll bet the inline fan that can move that much air is going to be a big mama, though. I'd check the numbers before proceeding.

I wonder what kind of CFM a smog pump moves...

I have heard of using them to supercharge a lawnmower engine.

Vigo wrote: I have heard of using them to supercharge a lawnmower engine.

Please dont give me any ideas.

Inline marine bilge blower fans aren't that big and it seems to move a decent amount of air.

That's what I was wondering about. I use one for my defroster and I've even seen them used in brake ducts. But do they compare to engine fans? The motors are pretty small.

A quick google shows that a 4" bilge blower pulls about 240 CFM at best. The 7" fans linked earlier pull 1100 CFM each. That's a pretty substantial difference.

I think you would need a pretty serious motor to get any kind of flow through the piping... Like a big gas leaf blower motor...

And even then I think you might be getting close to a choked flow condition.