Cajun ELESS-ONE

ok. cool. jw. did u notice any problem driving through the rain? it rains real hard in Louisiana and kinda concerned that water can get sucked up through the intake easier.

HioSSilver

iTrader: (8)

You did not make heat extractors. The air at the base of the windshield is high pressure......you just pressureized the under side of your hood.

metalmilitia606

iTrader: (8)

Pretty sure heat is still coming out because there are big friggin holes in the back now

BlackBirdDaddy

iTrader: (16)

Well, I really don't drive it in the rain. But if I do, I have a close-out panel I clip in with drain tubes.

HioSSilver

iTrader: (8)

Not at all. The base of the windshield is high pressure. Air will be pushed into those holes. Ever heard of cowl induction?? Ever look at a Cup car to see where they pick their air up for the engine?......they don't get it from there because it's low pressure.

WarShrike

iTrader: (5)

Simple initial test would be to remove the rear rubber trim gasket.

Cajun ELESS-ONE

[QUOTE=BlackBirdDaddy;17106512]Well, I really don't drive it in the rain. But if I do, I have a close-out panel I clip in with drain tubes.



ok. might have to keep the cut out piece and make it removable

BlackBirdDaddy

iTrader: (16)

You are correct in your statement that the base of the windshield is a high pressure area. But. I respectively disagree with your estimation that "you just pressurized the under side of your hood."

Just to confirm, I talked with two of the aero lab engineers here at GM Tech Center and they stated that with just the bottom feed through the radiator, and the openings I made in the front ducts of the hood, that sq. in. intake frontal areo area is more than enough to offset the sq. in. openings I made in the back of the hood hence, no pressurization issues.

Fun fact:
They had pulled up the data for the ZL1 and hood at the domed area near the base of the windshield actually shows a lower pressure than the sides near the windshield. So essentially they were saying that the "domed humps" on the WS6 hood will probably have close to the same results dependent on windshield angle.

And actually this year I will not have the air box blocking the "ram air" openings because I am eliminating it and going turbo.

You had brought up a valid point but there is no concern here for the reasons stated above and also this project is just meant to be a fun street machine and nothing more.

HioSSilver

iTrader: (8)

Cool as long as your having fun.

You would need to test other ways to determine which would be best for sure. But typically louvers in the hood will work the best for releaveing under pressures.

AmDWs6

good job, i envy you tbh

if only i had the time & $$...

zacht

iTrader: (18)

yeah i would think it would work good. our cars are slightly more aerodynamic than say the 70 chevelle with the cowl induction... i would like to see some aerodynamics tests on them to see about the pressure at the rear of the cowl...

HioSSilver

iTrader: (8)

You can tape small lengths of yarn to your car and see what the air is doin in those areas.

Shane

BlackBirdDaddy...that is amazing!

KissMyTushZ28

iTrader: (4)

BlackBirdDaddy: Do you have a thread concerning what steps you took to get your true ram air setup? I want to do this to my hood!

BlackBirdDaddy

iTrader: (16)

Honestly, it is just cutting f/g and laying-up f/g in the areas you want filled. I used expanadable foam in the corners as my backing then placed 3 layers of f/g on top of it to form my surface. Then just fill and sand, fill and sand and so on... It takes time and patience.





























Bad picture, but you get the idea

KissMyTushZ28

iTrader: (4)

Gotcha. Thanks man!