Adding a hood scoop?

[Diesel_Dave]

Originally Posted by camopaint0707

Yes I'm aware of cowl induction but most of those are for performance. I just want a little cooler air into the engine. The air wouldn't even hit near the intake at all more like the top of the block. I would just like to know if or how bad it would mess up the aerodynamics.

I guess I was wrong about the low pressure region. I didn't know about cowl induction (I'm always learning). And I misunderstood you--I thought you were talking to about connecting the hood scoop to your intake, not just into the engine compartment.

[Quasimoto]

Originally Posted by camopaint0707

Would adding a hood scoop with the opening facing the windshield cause a significant decrease in MPG's? I have a 1995 acura integra that gets a pretty hot engine and wanted to add a scoop but not if it's gonna severely hurt my fuel economy.

I am considering doing exactly the same thing. I seriously doubt whether you would notice any decrease in FE. It would also vent some of that hot air under the hood; and maybe give your radiator a little better cooling. There's only one way to find out though. Just do it and see what happens. You might surprise alot of people.

[Daox]

Actually, since its a high pressure zone, air will come into the engine bay at the hood/windshield transition point. This means more air goes under the car to an aerodynamically dirty underside. Thus, the aero is worse. Also, I do recall reading a while ago people using spacers to prop up the back of their hood. Some actually saw worse cooling with the hood spaced up. The airflow into the engine bay increases the pressure inside the engine bay. This in turn reduces the flow through the radiator and reduces the cooling capacity.

[camopaint0707]

So your saying it would be a bad idea?

[Phantom]

What you could try is to seal the bumper to front of the radiator, so the openings have to push the air past the radiator. That should help cooling some and when you are at it straighten out any bend fins on the radiator, they make a tool to do that but a cheap comb like they give kids on picture day will work if you cut the ends off.