I'm getting ready to start the bodywork on my car, and I was thinking about tossing a roof scoop on, I can make one out of fibreglass, so aquring one wouldn't be a problem, but the only thing im' worried about is the actual design of one... I know they're popular with rally cars, but i can't seem to find any good links to the physics behind a well designed/implemented roof scoop, all the links in google appear to be cheap, 50 dollar tape on ones... anyone have any good information/links?

Thanks!

 

Roof scoops on rally cars are for ventalation for the drivers. They are not for downforce.

 

CP acing has a replica of the TII scoop for 75.00, IF I were going to do this, I would use that one. Carl

 

CP racing has a replica of the TII scoop for 75.00, IF I were going to do this, I would use that one. Carl

 

a TII hood scoop on the ROOOF!!!!!!!!!!!!!!!

 

If you see any other scoop on the top of the car, it's an Intake for the midengine or some intercooler.

If you put one on an FC, you're a ricer, and you need to be slaped.

 

I'm on crack.

 

******* quote button.

 

I thought pregout (sp?) used a roof scoop that was basically a funnel, it started out wide on the front and was open all the way though.. to help with the airflow over the top or something... perhaps i'm wrong, though....

 

DBoty311 - I believe you, but i'm annoyed at the lack of data i can find on benifits/drawbacks of them.. normally if you reasearch something for a while online, you can find out most of what you need to know, but like I stated above, all i can find is cheap *** rice "tape on" style roof scoops.

 

 

OK, It is competely stupid to add a roof scoop to an FC unless you have Lexan non roll down windows and all the dash and vents removed.

The reason why the Rally people have it is because a car can get pretty damn hot with all the windows up and no ventilation. The scoop pushes fresh cooler air in.

Unless you plan to remove your sunroof and make it functional it is just a Fast and the Furiously Rice mod.

Mid and rear engines have this to help get air to the engine since it is a struggle for them to help alleviate heat or cool an intercooler due to it being in the back.

In the end
DON'T DO IT OR THE RX7 CLUB WILL KNOW ABOUT YOU!!!!!!!!!!!

 

Coolest hood scoop evar...

 

 

Nothing wrong with a functional roof scoop. And no, not all roof scoops either feed the intake plenum or ventilate the drivers compartment. On the Bentley XPSpeed8 (2002) the roof scoop actually was the cooling for the rear brakes. for 2003 they migrated towards individual scoops above each rear wheel a la F1 brake ducting horns. When I spoke with the designer of the car he said there were no gains in the move nor losses. I prefer the car with the roof scoop myself though. If you don't think that car is rolling sex then yes, you are a fool and not an autophile.

 

RS200 one of Ford's greatest cars.

That car got kicked out of rally for being too fast.
TOO FAST PEOPLE! THAT'S HOW MUCH *** IT KICKED!

 

that's SICK!!!
i wonder how the engineers managed to route air from the roof all the way down to the rear brakes..... that's some MAD-*** fuild mechanics skills... i can't even ****** imagine.... holy ****....

yes... rolling sex....

howi

 

group b rally owns! that was like fords best rally car ever.

 

Duh. :P

 

rs. 2oo was is mid engined 4 wheel drive 5oohp turbo. 4cylinder cosworth engine.the mini 6r4 was a better car

 

The reason for the lack of data, is probably simply because it is so basic. But I aplaud you for researching the topic.

 

way too fast and killed more than its fair share of spectators, mmm good times. We are looking for a hood scoop for our rally car. Main reason to get one is because it gets hot as **** in the car with lexan windows and no insulation from the exhaust and you, well just a nice metal floor. If your car is getting really hot, get the A/c recharged.

 

a turbo II scoop on the roof would be fugly!!!!! i mean why not just by a turbo II hood and help cool the engine no the roof!

 

I want those headlights. Damn those people who drive by me with their brights on and don't turn them off. THIS WILL SHOW THEM!!!!

 

Thank you for sharing.....now, for those of us who do not share your apparent genius, would you care to explain where the hell in his post did he even mention the idea of downforce????