Decklid Air Scoop - Help Identify & Source

[tdw28210]

Originally Posted by msort81

From the Porsche Parade Monterey in '73 thread over at ESR.

Very cool pics. But what's with the naked, one-legged invisible man hanging out in his white boot?

[msort81]

Originally Posted by tdw28210

Very cool pics. But what's with the naked, one-legged invisible man hanging out in his white boot?

He's putting some gas in the yellow car

[Scotty2H]

Some really good information / pictures. Thanks all. Sent an email to seller to find some more information. Looking to see if anyone is willing to fab up something similar; maybe under a group buy.

[mickey356]

Originally Posted by racer

Wouldn't this image show that air does run down the back of a 911? So it would run right down into the scoop?

Again, its not for aero.. and no doubt, subsequent Duck tail/carrera/whale tails were willing to sacrifice cooling for lift management. But a scoop like the OP had might be lighter and just as effective on engine/oil temps vs the weight and complexity of running lines and a cooler to the front of the car. Don't really know.. just speculating..

It would make sense that racers adding something like this piece would be doing it because it had an advantage, on the track at least.
I'll never understand the people on here that come right out and poo poo anything that isn't original from the factory.
Honestly, how bad could this piece be? Some of you make it sound like these cars are so temperamental that the slightest mod will rain fire and brimstone from above. I think it's safe to say these air cooled cars can take a little modification here and there and still survive. I mean they're still on the road now, 50+ years later, and we all know that most had previous owners that may not have been the most maintenance conscious.

OP - if you like this piece and you can find one, or have one made, put it on your car if for the only reason is it looks bad ass

[nb6179505]

Originally Posted by msort81

What are those wheels? Those are awesome

Sent from my Pixel using Tapatalk

[kenikh]

Originally Posted by msort81

Those wheels! WANT...


Sent from my iPhone using Tapatalk Pro

[manbridge 74]

Millions of bugs south of the border can’t be wrong...

[enzo1]

Originally Posted by nb6179505

What are those wheels? Those are awesome

Sent from my Pixel using Tapatalk

+1 .... ??? What are those wheels, LIKE!

[TheMetalSurgeon]

Originally Posted by manbridge 74

Millions of bugs south of the border can’t be wrong...

that's very true ,and a good point ....i found this thread very interesting

[Reuben911]

If that scoop didn't work then why Porsche's Turbo Exclusive and Techart using them ?

[offroader1006]

The roof angle is much different on the new 911's.

You would need a wind tunnel to test the difference between the ram air effect and the low pressure area formed by the windshield slope. The grill is designed to let heat run upwards and out, and a low pressure area behind the windshield would help this at speed.

Forcing air into it might work better at certain speeds, but it does look cool.

As for the bug, they didn't convert their factory grille, they opened up another hole to allow heat to escape. That's a big difference.

[kreeshp]

Originally Posted by msort81

From the Porsche Parade Monterey in '73 thread over at ESR.

I really like this design and it seems to this lay person's eyes to be the most functional of all the designs in this thread. Here we have retained the original grille and added a scoop to the lower portion of the decklid for enhanced cooling.

If I were doing this mod today, I would choose this design.

[Reuben911]

Another scoop by Gunterwerks

[gptom]

The wheels look like what Farrari used in the 70s

[mikedsilva]

Originally Posted by Scotty2H

I ran accross a sale ad for a car with an interesting decklid scoop. I've long wanted something just like this but have never seen anything like it.

Does anyone know anything about these scoops? A search didn't really turn anything up. Anyone make a replica? or have a line on a pile of them in a barn somewhere (a guy can dream right?)

1967 911 S Coupe

Would a scoop like this, benefit a turbo with an intercooler?
I've run my car with no decklid and the intake temps are quite stable and "low".
With the spoiler added, I found that hot air had no way to escape and once heat soaked the intecooler, it was quite difficult to get the temps to lower again.

Curious if anyone with a turbo has used a scoop like this?
I'm guessing if it was effective, plenty would be doing it...

[Tom_in_NH]

Those are JAP (J.A.Pearce Engineering) "Magna" wheels

Originally Posted by kenikh

Those wheels! WANT...


Sent from my iPhone using Tapatalk Pro

[stownsen914]

Thanks to Tom for answering the 7 year old question about the wheels!

The black 911 in pictured just above sure is pretty.

As for the scoop, I'd have questions. Not saying it doesn't work, but the grill area on a 911 is a lower pressure area, not the ideal place for a low scoop like that. And the "open area" of that scoop is substantially less than the plan area it feeds. The engine fan does a lot of the work to bring in air through the decklid grill, so a scoop like that may have limited benefit on an early 911.

[draucci]

Similar concept. Perfect Power in Buffalo Grove, IL.

[Showdown]

Given that the various engine fans pull between 1300-1500 l/sec (~2700-3100 cfm) which is a ton of air (a 20’x20’x8’ 2-car garage), it seems suspect that a small scoop that obscures most of the fan’s access to air would significantly increase the cfm.

https://forums.pelicanparts.com/porsche-911-technical-forum/332048-5-blade-fan-vs-11-blade-fan-3.html

It’s cool looking in a very 1960s lack of data type way but effective…?

RUF did have a scoop on some cars but iirc that was to aide in cooling the internet, not the engine. Again, not sure how effective.

Singer puts naca ducts on the quarter windows and sends that air to the engine… not sure if that’s for show or backed up with data…

I think one of the conclusions from Frere’s 911 book was that the fan does amazing and that a ducktail (or similarly shaped scoop) won’t increase the amount of air entering the engine bay but it might take some (tiny amount?) of the load off the fan… but this was all at race speeds where everything is a bit different that tooling around town…

Now, do grille scoops limit the amount of dust and exhaust that gets pulled into the engine bay from the rear of the car… maybe, and that’s something to consider if you’ve ever taken your car into gravel or dry dirt roads!