Text: Brent Co / Photos: Porsche Press | posted March 05, 2013 15:05
New 911 GT3 makes 475 hp
Porsche debuts the new 911 GT3 to commence the 50th anniversary celebration of the 911 badge in 2013. Since its first introduction in 1999, a total of 14,145 GT3 cars have been built, spanning four generations.
The new 911 GT3 is powered by a new 3.8-liter flat-six engine producing 475 hp at 8,250 rpm, revving all the way until 9,000 rpm. While the engine is essentially based on the same one as the 911 Carrera S, it is highly tuned with parts like an upgraded crankshaft, valve train, titanium connecting rods and forged pistons to achieve its high revving characteristics. The new GT3 engine will also use direct injection for the first time to deliver maximum power and efficiency.
The engine is mated to a close ratio seven-speed Porsche Doppelkupplung (PDK) dual-clutch gearbox, with no manual transmission option available. The PDK also comes with two adaptive settings - Sport and Race Track. The PDK system is configured with a 'lightning shift' mode which allows reaction times of less than 100 milliseconds, making for race driver-like shifts. It also comes with a paddle neutral function which allows the driver to 'dip the clutch' by pulling both paddles in useful in certain situations.
The new 911 GT3 achieves 0-100 km/h in 3.5 seconds, and less than 12 seconds to 200 km/h; it has a top speed rated at 312 km/h. Porsche claims a lap time of less than seven and a half minutes on the Nürburgring-Nordschleife.
To further lower lap times or help make better drivers, various electronic driving aids have been added to the new 911 GT3. Porsche is using active rear-wheel steering for the first time. Depending on the speed, the system steers in the opposite or the same direction as the front wheels, thereby improving agility and stability. Among the other new driving dynamics features are the electronically-controlled, variable rear differential lock, and the dynamic engine mounts.
The newly-developed all-aluminium suspension still comes with adjustable height, toe and camber. New 20-inch forged alloy wheels with central locking wrapped with ultra high-performance tires are used for optimal contact with the road. The rear end has also been widened by 44 millimeters to offer a wider track; this is finished off by a large, fixed rear wing.