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Chevy Cobalt SS
Supercharged Smokes Competition at Toyo Tires Time Attack
FWD Cobalt
finishes with fastest time overall besting AWD, FWD and RWD
competitors
BUTTONWILLOW, Calif.
The Chevrolet Cobalt SS Supercharged continued
its Time Attack assault at Buttonwillow Raceway Park on Nov. 8,
finishing with the fastest time overall (1:51) and first in the
Front Engine Front Drive (FF) Unlimited Class at the Toyo Tires
Time Attack presented by Super Street and eurotuner
magazines. It is the second fastest time ever for a Time Attack
run at Buttonwillow and eclipses the previous records set for FF
Unlimited (1:57) and all-wheel-drive (AWD) Limited (1:54) classes.
Race-prepared by GM Performance
Division for FF Unlimited Time Attack competition and driven by
current SCCA driving champion John Heinricy, the Front-Wheel-Drive
(FWD) Cobalt SS Supercharged bested more than 50 competitors
driving such established AWD racecars as the Nissan Skyline and
Mitsubishi Lancer Evolution among others, and was one of only
three domestic entries along with the Ford Mustang and Dodge Neon.
Our team was outstanding and
this win is further proof of the credentials GM Performance
Division and Chevy are building with the street tuner crowd for
the Cobalt SS and its Ecotec engine, said Heinricy,
director of High Performance Vehicle Operations for GM
Performance Division. The competition was tough, but the
graciousness in defeat shown by Tarzan Yamada, one of the
preeminent drivers in Japanese street racing, was very telling as
to how far GM has come in a relatively short period of time.
Based on Chevys new factory-built
FWD tuner car, the Cobalt SS Supercharged was also
chronicled on the SPEED Channels Street Tuner Challenge
during its 13-week build in preparation for the shows Time
Attack event on July 21. In that contest, the Cobalt bested an
801 hp twin-turbo Nissan Skyline and a nitrous-charged Volkswagen
Jetta by seven and 15 seconds respectively with a posted time of
1:58 on Buttonwillows #13 track configuration.
The Cobalt SS Supercharged has
largely maintained its production roots from a parts standpoint,
but was further tuned in preparation for the Nov. 8 event,
including an added nitrous boost increasing the horsepower to 380
and torque to 387 lb.-ft. among other aerodynamic improvements
and chassis tuning.
The premise behind Time Attack is
to take a street vehicle and using DOT approved tires
turn in the fastest lap on a racetrack for the vehicle
class. The vehicle must be from a model originally produced for
legal street use and it must have a silhouette largely faithful
to the original.
The Cobalt SS Supercharged has
strong performance credentials in factory trim. Powered by a
supercharged and intercooled 205-horsepower, 2.0-liter Ecotec
DOHC four-cylinder engine and equipped with a finely-tuned
suspension developed on Germanys famed Nurburgring race
track, the production Cobalt SS Supercharged has brought more
heat to the already red-hot sport compact segment, and has been
quite a dealer draw since its introduction in late 2004.
GM Performance Division in
collaboration with Chevrolet, GM Powertrain, GM Performance Parts
and GM Design created the Cobalt SS for Time Attack competition
to demonstrate the ultimate capabilities of the Ecotec engine.
Time Attack challenges involve multiple runs, so the engine must
be powerful and durable.
The engine features an Eaton M-62
Gen 5 Hybrid supercharger, and delivers 283 horsepower at 6840
rpm and 243 lb.-ft. of torque at 4200 rpm without the nitrous. It
is also Stage 2+ equipped, using a smaller pulley than the Stage
2 kit available soon through GM Performance Parts to achieve even
greater torque.
Some of the production Cobalt
elements were replaced with carbon fiber counterparts, including
the hood, doors, roof, decklid, rear wing, side rocker extensions
and Sparco car seat. The vehicles glass has also been
replaced with Lexan, and interior trim has been kept to a minimum.
The end result is a vehicle weighing a mere 2,350 pounds.
Powell Motorsport, Lotus
Engineering and Martin Technologies provided GM Performance
Division with vehicle preparation, logistical support and
engineering collaboration for the Toyo Tires Time Attack event.
Chevy Cobalt SS
Supercharged Time Attack Unlimited Specifications
| Body/chassis
structure: |
Unibody
|
| Body
material: |
Two
sided galvanized steel; carbon fiber doors, hood,
decklid, rear wing, front and side rocker extensions,
roof |
| Chassis
material: |
Two
sided galvanized steel, carbon fiber roof
|
| Suspension
|
|
| Front:
|
Macpherson
strut, no front bar, increased spring rates, Ohlins
double adjustable struts |
| Rear:
|
Twisting
beam with adjustable sway bar, increased spring rate,
Ohlins double adjustable shocks |
| Wheels:
|
9.5
x 17 |
| Tire
size |
|
| Front:
|
245/40R17
|
| Rear:
|
Same
as front |
| Tire
brand: |
Hoosier
DOT |
| Brakes:
|
310
x 26 - vented discs front 270 x 14 - solid discs rear
|
| Powertrain
|
|
| Engine:
|
Stage
2+ equipped 2.0L ECOTEC LSJ with Eaton M-62 Gen 5 Hybrid
supercharger, larger injectors and 77.9 mm pulley |
| Engine
displacement (cu. in / cc): |
122
/ 2000 |
| Horsepower
maximum (hp): |
283
@ 6840 rpm 380 @
6700 rpm with nitrous
|
| Torque
maximum (lb.-ft.): |
243
@ 4200 rpm 387 @
3500 rpm with nitrous
|
| Transmission:
|
F35
5-speed manual with 4.45 final drive |
| Dimensions
|
|
| Height
(inches): |
55.7
|
| Length
(inches): |
180.3
|
| Width
(inches): |
67.9
|
| Wheelbase
(inches): |
103.3
|
| Track
|
|
| Front
/ rear (inches): |
57.1
/ 58.1 nominal |
| Weight
(lbs / kg): |
2350
/ 1066 |
|