Thats a lot of change in the nose area. I wonder if it's really that bad. I would hope not.

I've seen this airflow sheet in Jack Yamaguchis FC book. So it's been around since the prototype days of the FC. I know aerodynamics haven't changed since then.

Oh well, I'm rambling on.

it would change with the rake of the car though...



mike

hmm if I cut a rad hole out between the FTP's does that mean air would come out instead of in https://www.nopistons.com/forums/pub...IR#>/dunno.gif

yah prolly, you need to cut the moulding like the japanese



mike

actually, I think the longer the lines are, the more pressure there is i.e. long lines = lots of air pushing against that spot.

I was thinking, just put a large NACA duct in the front of the hood between the headlights.

guys......no ****...aero works good at 120+mph dont **** with it..this is from personal experience in the racing industry



a naca duct in between the headlight would cause a low pressure surge in the front or the car..that is why you will never see one set up like that on a production racing car..



just watch speedvision/espn2 and observe how the vents are setup/ mounted..and please dont look at nascar for aero advice https://www.nopistons.com/forums/pub...#>/biggrin.png

Perfect illustration why a cowl induction hood works.

and the t2 hood scoop doesnt



mike

stupid scoop, why couldnt they at least center the damm thing,

you know how many cars in the 80's had those stupid offset scoops?

The t2 scoop/intercooler is awful.

I think they just put it there for looks, cause it sure does look purdy.

I was thinking about that the other day...yeah, I'm that boring. Is there some way to measure the airflow going into the scoop at certain speeds? I'm curious to see just how bad it is.

yes there is. in the 80's racing beat glued string to their imsa car and took video of how the wind blew the strings around as it was driving on the track.



mike

pressure sensor

Maybe I'll just glue a string to my intercooler and see if it comes out of the hood...lol.

yah, thats what i was hinting at, i actually wanted to try it



mike

I wish I had a little sister...I could steal the streamers off of her Barbie bicycle....I'm certainly not taking them off of mine.

yah those streamers would work prefect



mike

so cowl induction works by using the vacuum created at the base of the windshield to suck the air through? or am I just way off base...

yes, and they been putting cowl induction hoods on cars since the 60's.

It would be cool to use a cowl induction hood on a RX-7 and run a cold air set up with the intake being right in the cowl induction area at the base of the windshield versus the front of the car where the car gets no air flow thru the radiator support.

hense panspeed has that nice big reverse scoop in the center of the hood. Ohh now i've started talking about panspeed. help us all

So do as the japanese do, Use washers between the hood & the hood hinges (not sure of the scientific word for those). According to that drawing it should help with air circulation? I know they do it for cooling in japan.

supposidly you can just take the 2 bolts out of the hood closest to the

windshield and the hood will automatically lift a bit and draw in air, I wouldnt

reccomend doing it, but there are some that do, they think its some kind

of high tech cooling trick.

i wouldnt do that either, my friend had the hood come off his car....



mike

yea i prefer to keep the hood attached to my vehicle while driving https://www.nopistons.com/forums/pub...#>/biggrin.png



I might stick a washer or two between the hood & bracket when I put it back on. if it helps.. it helps.. if it doesn't help.. my hood looks fuxor'd heh