Porsche 997 GT3 RSR (Bilder og specs)

[marcos_eirik]

Based on the 911 GT3 RS, a particularly light and sporty derivative of the 911 GT3, the current GT3 RSR is designed to comply with the A.C.O (Automobile Club de l’Ouest), the FIA-GT and IMSA (International Motorsports Association) as well as VLN (Veedol Langstrecke Nürburgring) regulations. Porsche decided to build the new GT3 RSR after analyzing the relevant A.C.O. and FIA regulations in a specification which allows a minimum weight of 1,225 kilograms - 2465 lbs. (predecessor: 1,125 kgs) and permits the tire width to be increased by two inches to now 14 inches. Thirty-five kilograms of the required additional weight may be placed as ballast in the vehicle, resulting in a lower centre of gravity.

 

For the normally-aspirated Porsche engine, this specification allows a capacity of 3.8-litres with two 30.3 millimetre air restrictors (predecessor: 3.6-litres, 29 mm diameter). The increase in displacement was achieved through the enlargement of the bore to 102.7 millimetres with the unchanged stroke of 76.4 mm. With the mandatory air restrictors, the unit delivers 359 kW/485 hp at 8,500 revs per minute. Maximum torque increased to 435 Nm (320 ft. lbs.). Top engine speed is reached at 9,000 rpm. Thanks to the increase in capacity and the corresponding reprogramming of the electronics, the top performance as well as the response and driveability have further improved. The new positioning of the mid-front radiator and the use of side radiators - taken from the high performance Carrera GT sports car – contribute to the thermal health of the engine. Customer vehicles for 2007 will be delivered with a new sequential six-speed transmission featuring the gears of the RS Spyder which competes in the American Le Mans Series.

 

The body shell of the GT3 RSR with the welded-in safety cage is ten percent stiffer than its predecessor. Distinctive wheel arches widen the body by 50 millimetres on each side. The track is enlarged correspondingly; wheels and tyres of the maximum allowable dimension can be fitted.

 

The relocation of the supplementary oil tank (option), the power steering and the battery to the front improve the weight distribution. The front and rear lids, the front mudguards, the wider rear, the doors as well as the front and rear panelling and wing consist of carbon-fibre composite material. The rear and side windows are manufactured from light polycarbonate.

 

The newly-developed aerodynamic package improves the aerodynamic efficiency compared to the forerunner (type 996 GT3 RSR) by a total of around seven percent. Airflow to and from the radiators, the brakes and the engine were further optimized. In compliance with the FIA and A.C.O. regulations the new GT3 RSR features a flat underbody.

 

The suspension with Porsche-optimized struts at the front and the Porsche multi-link axle at the rear corresponds to the configuration of the standard car. The modified kinematics is set-up for the wider tyre footprint and for the lowest possible camber change in rebound and compression. The new ZF-Sachs shock absorbers feature the Through-Rod-System with considerably lower chamber pressure and hence less friction than conventional dampers. As a result they offer a significantly improved response characteristic. The position of the rear axle was optimised. The axle features a new anti-rollbar, an adjustable upper link and an optimized lower link.

 

The brake system features six-piston aluminium callipers and 35 millimetre thick brake discs measuring 380 mm in diameter at the front and 30 millimetre four-piston aluminium callipers with 355 mm diameter discs at the rear.

 

 

 

 

 

 

 

 

 

 

Mer informasjon finner dere på Porsches motorsportside...

[|Massern|]

Rå bil! Hadde vært noe å fått prøvd på en bane:)

[Handy-Andy]

Engine

Type: Flat-6

Displacement cu in (cc): 219 (3596)

Power bhp (kW) at RPM: 415(305) / 7600

Torque lb-ft (Nm) at RPM: n.a.

Redline at RPM: 8400

Brakes & Tires

Brakes F/R: ABS, vented disc/vented disc

Tires F-R: n.a.

Driveline: Rear Wheel Drive

Exterior Dimensions & Weight

Length × Width × Height in: n.a.

Weight lb (kg): 3031 (1375)

Performance

Acceleration 0-62 mph s: 4.2

Top Speed mph (km/h): 187 (310)

Fuel Economy EPA city/highway mpg (l/100 km): n.a.

 

"Beyond its unique livery, the GT3 RS is distinguished from the GT3 on which it’s based by broader rear flanks and reduced weight, further distilling the driving experience to that of a racing car, but one which meets all the requirements for street-legal sports cars. This purist’s variant of the 911 GT3—a model particularly well-suited for track outings—will arrive in time for spring 2007.

 

Not since the venerable 1973 911 Carrera RS has such a production Porsche been available in this market. The Carrera RS was a special, lightweight 911 produced to homologate the vehicle for racing. That tradition continues with the new Porsche 911 GT3 RS, which is modified to serve as the homologation model for a range of worldwide racing series.

 

The RS’s immediate predecessors have garnered more than 50 victories and five championships in the American Le Mans Series, as well as overall victory at the Rolex 24 at Daytona.

 

The modifications made to the 911 GT3 RS begin with the bodywork. Compared to the GT3, the rear of the RS is 1.7 inches wider, as it is based on the fuller-bodied 911 Carrera 4 models. The muscular-looking rear end conceals a wider track that not only improves directional stability, but also increases the potential for lateral grip on this two-seat coupe.

 

Despite its specialized body, the Porsche GT3 RS is lighter than the GT3. This weight-saving was achieved through the use of—among other solutions—a carbon fiber composite for the front lid, and an adjustable carbon fiber wing. Modifications on the GT3 RS geared specifically toward race-regulations include the rear wheel carrier, split rear-suspension wishbones, and the carbon-fiber components.

 

The quick-revving nature and peak output of the Porsche 911 GT3’s 3.6-liter flat-Six remains the same, with the highly-tuned Boxer mill generating 415 horsepower at 7,600 rpm, on the way to an 8,400 rpm redline.

 

The new 911 GT3 RS will be available in two standard finishes: Black or Arctic Silver metallic. As an option, the GT3 can also be decked out in brilliant orange or green paintwork. All vehicle insignia and the wheels themselves are styled in orange or black to contrast with the body color. The 911 GT3 RS’s interior lives up to the vehicle's race-derived styling. Internal trim is black, with the roof lining, steering wheel and gear stick trimmed in high-quality Alcantara leather.

 

The 2007 Porsche 911 GT3 RS will reach the North American market in the spring of 2007, at a price to be announced."

 

 

 

 

 

 

 

 

 

[Bullitt_Mustang]

Nydelig bil!

Vært morro å sett den der på Nurburgring. m'm

[marcos_eirik]

Med tanke på hvor mange 996 GT3 RS som kjøres der støtt og stadig, så kan du regne med å se denne der også... ;)