CAI hood vent?

[uofom3]

one of the main reasons that louvers are used on hoods is to dicipate heat. This is not done to cool the air on the intake path, or to create a "cold air intake" but to reduce the amount of heat tripped under the hood to reduce lift. Heat rises - the cooler the engine compartment can be, the less lift on the front of the car. Properly placed vents can help the rediator get better air flow and possibly reduce overall under hood temps, but to achieve what you are talking about you need to find a way to channel the air into something that will allow the air to not be turbulant when it reaches the actually intake. With your proposed setup, you'll have increased drag, imbalance the car at speed, and create a seriously turbulant air enviornment under the hood. The reason the factory uses stock airboxes with the little trumpet that sticks behind the bumper is because the air is not turbulant (read low pressure) in that part of the engine bay. The motor is able to intake more stable air - and something that is stable is easier to get - easier to get ='s a larger quantity, and the engine is happy. I run a factory "evo" airbox on my m3, and i have also had a cone filter. The car runs noticeably better and quicker (especially if its warm outside) with the factory airbox, and a factory air filter. The ultimate best solution to this problem is to remove the high beam on the drivers side and use some sort of ducting to pipe air directly to the filter. The tubing channels the air properly, and alows truly cool air to be taken in at the filter. I have seen this applied and it really does work. a really good writeup on this topic can be found at :

https://www.e30m3performance.com

[Tangent]

I know that the trapped air under the hood can generate lift but I don't think it has anything to do with the temperature of the air for practical purposes. Just think about how massive of a volume of hot air a hot air ballon needs and how little weight it can lift relative to that. Having hot air trapped in the under-hood area vs cold air probably would work out to a difference of half an ounce of lift...

I'd maybe consider venting my hood if I start tracking the car alot and have cooling issues. (There are plenty of better solutions to that problem though) Vents just aft of the radiator are great at extracting the hot air from behind the rad and promoting much faster air flow thorugh it. That what those hoods that take the big dip before the front edge are for. Plenty of ricers are using them for looks now, but lots of race cars have them as well. You can see them clearly just inboard of and back from the headlights on this Maserati racer:

[trent]

Lol, that M3 chris posted:

"Features:
- Lightweight perimeter protection
- Multi-layered ballistic glass
- Operable front windows
- Computer armor
- Protected battery
Optional Security Modifications:
- Underbody grenade protection
- Locking fuel cap
- Protected fuel tank
- Inside/outside intercom
Luxury upgrades
- Public address system and siren
- Run-Flat tires"

its armored, LOL

did you see hte pics? The windows are like 1 inch thick!!! wow!!

THe guy is on s14.net and was talking about the car...pretty unique in my opinion

[uofom3]

I know that the trapped air under the hood can generate lift but I don't think it has anything to do with the temperature of the air for practical purposes. Just think about how massive of a volume of hot air a hot air ballon needs and how little weight it can lift relative to that. Having hot air trapped in the under-hood area vs cold air probably would work out to a difference of half an ounce of lift...

I'd maybe consider venting my hood if I start tracking the car alot and have cooling issues. (There are plenty of better solutions to that problem though) Vents just aft of the radiator are great at extracting the hot air from behind the rad and promoting much faster air flow thorugh it. That what those hoods that take the big dip before the front edge are for. Plenty of ricers are using them for looks now, but lots of race cars have them as well. You can see them clearly just inboard of and back from the headlights on this Maserati racer:

I really don't think i'd ever considder venting my hood, unless as you say i had serious cooling issues on track.

the picture you posted perfeclty illustrates this venting effect doen properly. another:
[img][/img]http://www.e30m3performance.com/installs/installs-3/hood-vent/pic1.jpg[img][/img]

[uofom3]

fuck its been a long day
AGAIN:

[erik325i]

^^^^^

Ohh My God! That's hideous!

[uofom3]

and you're not understanding the concept and it has nothing to do with appearence- read the article under mods and installs on www.e30m3performance.com about why it is there before suggesting its ugly-- i wouldn't do it, but it works.

[Tangent]

Effective though it might be, it looks like it was ripped out of the wall in someones house and grafter into the hood...

[Surge]

I actually think it looks ok - it's not a half assed job or anything, it's done rather well, and remember it's only there for a functional purpose.
If everyone stuck to the norm nothing interesting would ever come about.

[franco90]

here is an e30 with a scoup, not really a grill like ur planning, but i guess u can get a better picture of it.

BTW: Car is turbo'd thats why its on the wrong side.

bas ass

[Farbin Kaiber]

What are you doing franco90? This was from half a decade ago.

[franco90]

I know looking around helping a e30 dude find hood scoops for his e30 (pics)

[Farbin Kaiber]

I know looking around helping a e30 dude find hood scoops for his e30 (pics)

From 2004/2005. He probably r3v'ed his car already and is driving a Corolla.

[franco90]

thanks dude

[Farbin Kaiber]

From 2004/2005. He probably r3v'ed his car already and is driving a Corolla.

Then I went to page one, found it was Mr. Anderson, and franco90, no, I highly doubt he needs assistance in venting his hood. Maybe a bondo center console cupholder though.