I have an 02 coupe. I believe our stock popup spoiler just reduces lift but creates no downforce. Does anyone know of options that are street/track (i.e. not a huge wing) that can create some downforce or at least better reduction of lift than stock spoiler? I have just started my research and have briefly looked at some of the items on Getty, Mashaw, stuff on ebay, etc.

If you do have a particular wing/spoiler, what difference was felt on the track vs your stock setup (higher cornering speeds or stability, etc.).

Thanks.

 

The MKI GT3 wing - which is also the MKII aero wing - is adjustable. The neutral setting may interrupt laminar flow but may not add any downforce. To adjust the wing, you loosen the bolts at the top of the uprights and insert a shim. Porsche makes 4-degree shims and 8-degree shims.



I imagine you could also make your own custom shim if you wanted a more specific wing angle.

In high-speed driving (above 120MPH), I have found that the 8-degree shims make a significant difference in how the rear end of the car feels. I have also noticed a decrease in fuel economy with daily driving, but it has not been significant and I have not noticed any additional tire wear (the 911 isn't exactly easy on rear tires anyway, so I don't know that I'd be able to tell).

Since this wing was available on the GT3 MK1 996 as well as the Aerokit II, it's common enough for daily driving (i.e. it's not a massive metal-and-carbon contraption suitable only for the track).

This is a photo of my 996 with the 8-degree shims installed - you can see that the rake of the wing is significant.



Because my car is running 19" tires, the tire sidewalls are very short, and that plus a bouncy suspension resulted in the rear end being skittish when I first got the car with the wing in the neutral position. Adding the shims definitely helped make the rear end less jumpy at normal (highway) speeds.

 

5CHN3LL=> what you have is the OEM GT3 not a reproduction, correct?

 

The aero parts on my car are Porsche, not aftermarket. I believe they were sold as an "Aerokit Cup" kit for fitment on a MKI 996, but I have not run the part numbers to confirm this.

 

I think the GT3 look aero kit on yours is for a Mk2 GT3/gt3 look. The MK1 is the taco wing that was found on MK1 GT3 and GT3 look aero cars (like mine).

 

USA didn't get the MK1 GT3 996, only the MK2 afaik

 

This.

Plus us MK1 aero taco wing guys don't need no stinkin shims.

 

Taco wings are heinous, and the GT3 taco adjusted for max downforce is just unforgivably ugly. Like, Roseanne Barr and John Madden had a baby ugly.

 

That is your opinion and you are certainly entitled to it. I like it because it is unique to Porsche and a signature mark, sorta like the turbo twist wheels, whereas the mk2 gt3 wing looks like a lot others out there and more plain jane. Different strokes for different folks...

 

What Alpine said... plus MK2 GT3 wing looks like a plain serving tray and lacks character. Taco rules! It's da bomb.

 

[QUOTE=996_North;12378590]What Alpine said... plus MK2 GT3 wing looks like a plain serving tray and lacks character. Taco rules! It's da bomb.

Agreed,
The MK2 GT3 wing looks like a book shelf bolted to the rear of a 996. All it needs to be complete is a matching pair of bookends.

 

Ok besides looks between the two. Does one have more downforce than the other?

 

I think if you are going for max downforce (or negative lift) the RS spoiler is the most effective. Don't forget they are called "spoilers" as they spoil the flow of air across the rear and mimic an upside down wing.

There are a few threads including this one below that discussed the RS. Do a search in Google, there is not much quantifiable info though.

It might be safe to assume that the MK2 complete aero is a more advanced than the MK1, and have more downforce. Keep in mind the front and sides need the aero bits as well. Just a spoiler will be unbalanced.

https://rennlist.com/forums/996-foru...ent-shims.html

 

Both are negligible unless you're going well past 100mph but for max rear downforce, you'll want a cup car rear wing as it has a larger surface area but more importantly, elevated above the roof level where they function more effectively.

As for mk2 being more "advanced" in aerodynamics, lol, I don't feel like participating in a oil/tire type debate.

If you wanna "one up" the mk2 picnic table, you can always do the quasi-race mode mod on your taco. Lol

 

That's the "chalupa" wing, right?