Any possibility to add Louvers?

 

Louvres are a much better solution IMO I'd like to know too, since IMO i think the DIY vents only really help idling/hot traffic scenarios.

If we could seal the underneath and sides of the car then the DIY vents might come into there own.

 

I talked off an on with a few different companies about designing a louver style to direct air more effectively with the stock hood vents, but a few things came into account.
1 - Not all hood vents are identical... one may have no side wall, one may have half an inch, etc...
2 - Sell seperately? or a kit? some people dont do all 3
3 - Unique designs, as you see above, he has a design unique to his car, therefor, he would need a specific one custom
4 - Ultimately, it WOULD be more beneficial, but financially it would be a loss... so go for it DIY guys

I still keep debating trying to make a prototype but i just ordered a vented hood.

I am an Electrical Engineer Major @ USC and i worked up some flow drawings and such, and yes, the oem hood vents actually would hurt you while moving, and are only beneficial at a stop, because of their angle to the wind this is not a good way to go.

 

Love the look of the vented hoods in this thread. I'm seriously reconsidering, but the vents will certainly detract from my sleeper status

 

Could you please explain your theory on how this could possibly be hurtful while moving? They certainly don't create more heat.....

 

I believe he meant they would hurt aerodynamics, not power. (I'm sure cutting vents in your hood alters the aerodynamics of the car, but the difference is likely marginal).

 

In that aspect, I'm sure.

However, cruising down the expressway, trying to keep underhood temps down. I don't see how this could be anything BUT beneficial

 

Make sure to check and clean out the exposed areas under the vents on occasion. Battery, and any ground cable or wires. They will collect dirt and grease.

 

In order for the heat to escape while the car moves it either must force air in, or allow air out. at the angle its approaching while moving forward the rising heat is not able to flow out and it creates turbulence. you engine vents out the back side and the turbulence actually would have a negative effect on the airflowing out of your bay. louvers or directional vents would be ideal. if anything buy hood risers and call it a day. try n search my old thread i explained better and has drawings.

 

I've spoken with aero engineers who say the vents in my hood ARE beneficial in terms of expelling heat and in terms of handling even to a small amount. The vents he has with the larger in the rear isn't a good idea, the air should be vented in the front of the hood. IF you want a good design have a look at the ASM hood, it's done right.

My vents though, do work in terms of heat at least, I logged it with aem with and without hood on and off on multiple runs down the same area and logged over 20 degrees drop average with the hood vented reverse of how the black car is done, meaning larger vents in front.

-Greg