slate blue

I posted this in the Carbon Thread, just in case others are interested here's the pics. Also just in case others can/want to photoshop this properly just let me know.



The piece that needs to be welded in.



So what do you think? I plan to actually use the vents, it can be used for coolers and aerodynamic advantage as high pressure develops here.

Greg

blown 87

looks to much like something off of a C3 Corvette, oh, wait, nevermind.

RevAgent

It is somewhat Corvette-esque, however, at the same time I like it

What vehicle are these panels actually from?

-Mark

Mogans

The look doesn't do much for me, sorry. Not sure about the functionality.

Nicole

Why would you want to open up an area that seals-in and protects the components mounted under the fender, when there really is not any reasonable way to connect it to the engine compartment for ventillation?

I'd rather install a belly pan from a later model, along with an adapter piece in the front.

Nightfly

That plus the red makes it remind me of a certain Ferrari. I like the normal shark look (just without sidestrips).

FlyingDog

Duct high presure air from the wheel well to reduce drag, increase downforce (or reduce lift) and improve brake cooling.

slate blue

By Flying Dog

Give that man a beer, you are correct.

I also think it has a distinct shark like character. The high pressure air will be ducted through coolers mounted in that area. I also plan some small bonnet ducts that release the high pressure and hot air from under the bonnet. It is referred to a zero drag cooling.



Greg

GlenL

Jeez. Gotta be expensive to cut up Ferrari's but some guys...

I like it. It looks cool and updates the car.

linderpat

I don't like it - it clutters up ther clean look of the sides of the car. If it is being added strictly for a racing function, then have at it - that is different, since all cars that are raced are modified in ways that often detract from the original aesthetics but add to functionality deficiencies in order to go faster at the track.

S4ordie

Purely functional to me. The appearance, though "gill-like" and therefore "shark-like as well looks over stated for the car IMO.

Seems like you would have to move a number of things from that area as indicated by Nicole.

As a racing adjunct, yes definitely.

ptuomov

I like the looks. It works especially with the pre-S4 style rear spoiler and with the rub strips removed.

On functionality.

I thought that the area behind the wheel well had a relatively low pressure, lower than typically under the hood or on top of the hood right in front of the windshield. The air would be flowing out of those fender vents, if the other side has the underhood pressure. Perhaps this is what you wrote anyway and I just misread it.

I also thought the spinning wheel causes a low-pressure area inside the wheel well. At least in front of the front wheel, there's a low pressure area. Perhaps it's different behind the wheel, but doubt it. Just punching it thru to the wheel well may not generate much flow. You'd have to duct it to the engine compartment somehow.

In my opinion, for a normally aspirated car, the best way to cool front brakes is cut a hole in the bumper under the headlights (a high pressure area) and run a duct to brakes. It might also be beneficial to duct the hot air out from the top of the fender in the low pressure area.

The hood vents work for sure as long as they are not too close to the windshield. I am wondering if you've photoshopped an example of those yet?

76FJ55

I am also a little unclear as to the brake cooling benifit of these vents. it seems to me that it will actually decrease brake cooling as I under stand it to work. To cool the brakes the vented rotor acts similar to a cetrifugal compressure (think inlet side of a turbo). air that enters the center of the brake rotor is slung out through the vented section of the rotor where it comes into contact with the rim. the rim then using the same principal slings the air out through the slot in the rim to the outer edge where it exits to the outside. in order for this to work you want to get as much air flow into the center of the brake rotor, decteasing the pressure inthe wheel well and encouraging the inducted air to exit through the fender will decrease the flow through the brake.

Ragnar Joensen

First: I have had a glass or two of red wine. That gives You honesty and gives me a headache in the morning.

Second: I think it is a non-solution to a non-problem (the automotive industry is full of it). Additional cooling/venting. Why would You want that ? To my knowledge, the stock venting is adequate, provided that things work as intended.

That leaves the design change as a cosmetic thing and should be judged as such. My judgement: Spend the money on regular maintenance or renewing suspension parts. On any 928 those are the areas that can be improved the most. At least in 95% of the cases.


Ragnar

dprantl

I like it, but I think a longer single slit would look better and not clutter the lines of the car up so much.

Dan
'91 928GT S/C 475hp/460lb.ft