FOR RELEASE: 2005-11-11
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 Chevy’s new factory-built FWD “tuner” car, the
Cobalt SS Supercharged was also chronicled on the SPEED
Channel’s Street Tuner Challenge during its 13-week
build in preparation for the show’s 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 Buttonwillow’s #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 Germany’s 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 vehicle’s 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 |
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