Cold Air setup???

[LiquidX]

Now there are a lot of threads dealing with the cold air intake coming up from the front bumper and making a cold air box to isolate engine compartment heat. We can all agree on the benefits of ram air induction and that with a properly built box and certain speeds you gain the ram air effect since the air has no where to go with a proper box.

My question is will adding in a cowl style vent over the box improve on any sort of airflow gains and allow for a better design.

Taking components from both designs I have made an awesome picture of what I am describing.

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As you can see the air will enter from the front and exit out the hood for improved (I hope) airflow. Also the with the way cowl vents work they help pull air through the vent so in theory there would be more air flow to the intake even at lower speeds if it wouldn't already be pulling more from the hood vent already. The vent would only be the width of the cold air box as well.

On the side I made a drawing of a plug that would be inserted into the cowl vent for when there is a lot of rain or snow so the air box doesn't get filled with either. It would be bolted in with 2 bolts from the top to withstand the pressure from the entering air.

Anyone that has knowledge with airflow design, would this help out or be a lesser design than having a solid box for a "ram air" style intake. I would also be considering putting heat tape over the aluminum box and on the intake pipe as well.

If it would only help with dropping a degree or two then I don't think it would be worth the extra effort and hacking up a perfectly good roof.

Opinions welcome as well.

 

[DGajre777]

Awesome picture!

I'll apply my theory of aerodynamics as it relates to airplanes and say no, so take it for what's it worth but I don't think it'll be a better design. The "cowl" on top of the hood will create a low pressure on top and suck air around the filter and out through that hole.

Send a PM to Andrew gixxerdrew, I'm curious to see what he has to say about this.

 

[LiquidX]

thanks for the comment on the picture.

I sent a PM so hopefully he'll input his advice as well.


Regarding your reply:

So by having the cowl, that will reduce the amount of intake air that would be allowed to be sucked in because (if I understand it correctly) the high pressure air will move around the filter and out the top because the turbo is trying to create a vacuum which would need to be stronger than the low pressured air?

So potentially high speed driving would suffer, what about low speed as that would help draw air into the box?

 

[gixxerdrew]

Yah, dont worry about outflow, just presurize the air filter. Any air that cant escape will be forced back out the hole it was trying to enter from.

 

[LiquidX]

So it would be a wasted design then and better off with an isolated air box? I appreciate the help from both of you and didn't realize that a simple hole would affect so much