trebien

Those people are going to be really, really fast... like they don't even have brakes.

Yargk

Let us know. What's the benefit of the camber plate if you can get -3 degrees with shims?

ShakeNBake

There are a couple benefits of using camber plates with/with out shims.
1) It gives you an extra degree of freedom when trying to stuff a wider tire. Plates move the top of the wheel in in, shims pull the bottom out. Shims move the stance of the car wider, so if you have a wheel that already has an aggressive offset, you might be challenged to run a wider tire.
2) My setup guy (Eric) at ATX has a hypothesis that using shims is lowering the wheel rate and making the roll issue/understeer/tire wear worse. Not a huge amount, maybe 2-4% but enough to impact.

The issue with the old Tarret camber plates is that they rotated the strut, which removed a couple degrees of caster, somewhat negating the impact of running higher negative camber. Higher caster gives you more negative camber as the steering input increases. The new design is supposed to address the caster reduction.

Vintage72

I just had my stock GT4 suspension adjusted. Now the front has a -1.8 camber and the back -1.3. It should help a little.

myBailey07

That will definitely help; however, knowing you, just give up and get the suspension goodies to get proper camber ;-)

Vintage72

I know, I know - but I am trying to be GOOD!!!! First, let me keep getting better behind the wheel as I have a long way to go; that is what I keep telling myself. Since I am new at this track stuff I have promised myself I will get better before modding. Plus, another car will show up in a bit. I need to be better for that one. Eventually, suspension bits will show up on the GT4.

OlsenMotorsports

Thanks!

Here are the pictures. I can do a write up on install procedures etc. Kind of a pain to get to as the whole side skirt has to come off.

Made out of 308 stainless. Laser cut, laser bent, then hand welded. Same screen style and material as all our screens. Super Beefy

-Tim

Don't know why the mounted one's image is rotated! Sorry about that.

Jenner

How much will that grill reduce airflow for engine cooling and intakes? 30-50%?

OlsenMotorsports

Great question. We have not seen power loss's with the screens on the dyno. Many of our dealers have bought them and put them on the Clubsports in PCA, havent seen any problems stem from the screens.

I'm sure it is something that you can quantify mathematically, we have not done that. Our research showed that 1/4" screen has zero net airflow decrease, and 1/8" has 20% and we made our decision based on that (we use 1/4) We don't think there is a severe reduction in overall airflow, just turbulence is affected of course. We left the IGV's and the factory screens also in place that are up the snorkel from there.

Same screen design as all our radiator screening and temperatures/airflow were never a problem.

-T.O.

TrackDays247.com

Aerospace engineer here: The above jives with what I've been trained,. Great job!

ML///

How are those screens mounted? Factory mount points or are new holes required?

OlsenMotorsports

The tab has a 5.10 MM hole for a 5mm screw or 3/16" rivet. A hole is required in the black insert on the side skirt for installation.

Nagata-San

Just had my car setup by Rechteiner Racing in Switzerland.
http://www.rechracing.com/

Car got lowered about 3cm (1,2 inch), is fully stock and values are:

Camber 2.8° front
Camber 1.8° rear (maxed)

Total toe
Front 0'
Rear 25' IN

Alignement
F-L 157mm
F-R 153mm
R-L 158mm
R-R 158mm

Car height, ground to highest point of the fender
F 676 (L+R)
R 696 (L+R)

Weight, with 55L of fuel SP100
F-L 313
F-R 311
R-L 404
R-R 402
Total 1430kg with fuel (around 3140 lbs)

Tires Dunlup Sport Maxx Race 20"
Clubsport, 918 seats, 2 harness etc...

Mech33

Was the rear camer "max" at -1.8 deg because you ran out of threaded stud length for shims?

To anyone that knows, how much camber can one achieve front and rear before you run out of stud length and need to add monoballs just for thread length alone? Thanks.

Bill Lehman

I've got -2.8 F and -2.4 R using shims. Didn't look for more. Needed rear toe links to get proper toe.