# Aero=Hood Venting/Scoops Theory Application

**URL:** <https://forums.speedlife.net/t/aero-hood-venting-scoops-theory-application/112509>\
**Category:** SON240sx Automotive\
**Created:** [January 17, 2008, 2:25pm UTC](https://forums.speedlife.net/t/aero-hood-venting-scoops-theory-application/112509 "2008-01-17T14:25:37Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![NoSkillz](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/noskillz/32/5606_2.png) [@NoSkillz](https://forums.speedlife.net/u/NoSkillz)\
**Post date:** [January 19, 2008, 8:43am UTC](https://forums.speedlife.net/t/aero-hood-venting-scoops-theory-application/112509/20 "2008-01-19T08:43:56Z")

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> [@260hp + 1350lbs = Sweet](https://forums.speedlife.net/t/260hp-1350lbs-sweet/15590/6):
>
> it actualy increases drag on the car by cooling the top of the engine bay…
> 
> when the engine bay is not hot the cold air running under the car runs up into it as well as down into it from the hood…
> 
> then the engine bay is sealed and hot, cold air naturaly is always lower than hot air. so the air going under your car goes stright back and not up. there for giving you better areo because theres no hood vents. know what im saying?

ok i understand it will cause drag. And i think i understand what u r saying and that does seem right. I also think that sacrificing drag on the top would decrease overall drag in my theory. I do agree that the vents will cause more drag then a stock hood.

Now in question to what u said. If the cold air passing under the car flows faster and faster does it not create a vacuum like effect sucking air from above and out below the car. Plus any pressure in the bay it would help exit out below. Now this would be good for cooling but horrible because it would cause lift especially at high speeds.

Now the slits on the top of the hood that i added would be bent upwards causing drag however creating a vacuum sucking air upwards just as air is sucked under.

Also note that doesn’t drag in specific places also causes negative lift. example “spoilers, lips, splitters, valances” (correct me if i’m wrong)

i totally have no clue what to do now lol

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