Porsche 911 GT3
Fifth Generation w/PDK
Press Release - March 2013
The completely-redeveloped fifth generation of the 911 GT3 occupies the top position among Porsche sports cars with naturally-aspirated engines. Following the total production of 14,145 GT3 cars since 1999, the fifth generation of the 911 GT3 is a new car from the ground up. Both engine and transmission, as well as body and chassis, are entirely new, and extend the 911 GT3 concept with an impressive performance made possible with new active rear-wheel steering, as well as other features. This ensures that all successful characteristics of this track-developed sports car are preserved, with improved dynamic capability while preserving day-to-day drivability and most importantly, a highly emotional fun factor.
The powertrain of the new 911 GT3 is composed of a 3.8-liter boxer engine yielding 475 hp featuring a 9,000 rpm redline and a specially developed Porsche dual-clutch transmission (PDK) which drives the rear wheels. The six-cylinder engine is based on the 911 Carrera S engine, but shares only a few common parts. All other components, particularly the crank - shaft and valve train, were specially adapted or developed for the GT3. For example, Porsche is once again using titanium connecting rods and forged pistons.
The Porsche dual-clutch transmission in this application has been specially developed for the 911 GT3: the characteristics are based directly on a sequential gearbox from racing, thereby providing further performance and dynamic advantages to the driver. Highlights include shorter gear ratios with closer spacing, even faster shifting, and shift paddles with shorter travel and increased tactile feedback, which now allow the driver to place the PDK in neutral simply by pulling on both paddles at the same time.
For the first time, Porsche is employing active rear wheel steering to achieve even higher steering precision and improved lateral dynamics. Depending on the speed, the rear wheels steer in the same or opposite direction of the front wheels, improving stability and agility. Other new features that improve driving dynamics are an electronically controlled, fully variable rear differential lock and dynamic engine mounts. The newly developed all-aluminum chassis can still be adjusted by height, toe and camber. Contact with the road is made by new 20-inch, forged alloy wheels with center-locking hubs in place of conventional wheel bolts.
The 2014 911 GT3 is based on the light yet stiff body of the current generation 911 Carrera, which employs a hybrid steel and aluminum construction; however, it comes with unique front and rear parts specific to the GT3. In addition, the 911 GT3 is 1.7 inches wider than a 911 Carrera S in the rear. Another distinctive feature is the large, fixed rear wing, which contributes to the exemplary aerodynamics.
By combining low air resistance with even more power, the 2014 911 GT3 sets new per - formance records. At full acceleration from standstill, the 60 mph mark is reached after just 3.3 seconds, and 124 mph is reached in less than twelve seconds. The top speed of 195 mph is reached in the seventh, the top gear of the PDK transmission. The lap time on the Nürburgring Nordschleife is even more impressive: the new 911 GT3 is capable of lapping this track, commonly regarded as the most difficult in the world, in less than 7:30 minutes.
Completely new: Sports engine with high-revving concept
The Porsche Motorsport Department has developed an entirely new engine for the 911 GT3. This engine is a synthesis of the previous GT3 high-performance engine and the new engine generation of the current 911 Carrera series. For instance, the new engine comes with typical motor sports technologies, such as dry sump lubrication, a high-revving concept, and titanium forgings. These are combined with the cutting-edge technologies of production engines such as direct injection, a demand-controlled oil pump, and lightweight design and materials. The resulting engine weighs around 55 pounds less than the previous model, and features a power output of 125 hp/liter of displacement.
The structural changes to the base engine were done with one principal goal: enhancing the high-revving character for which the 911 GT3 is known. These developments made it possible to increase the maximum engine speed to 9,000 rpm.
Switchable sports exhaust system with special exhaust manifolds
Naturally, the new 911 GT3 still comes with a sports exhaust system, which was largely adopted from the previous model. This means high-performance system uses two catalysts which are close to the engine and integrated into the manifolds. Two switchable front silencers and a common rear silencer with two central tailpipes ensure that the 911 GT3 meets noise requirements for road use.
Doppelkupplung with special 911 GT3 attributes
The dual-clutch transmission Porsche Doppelkupplung (PDK) originates from Porsche racing. With the 911 GT3, it returns to the mapping developed on the track: The motor sports engineers have revised the PDK extensively both in terms of mechanics and control technology for the new high-performance sports car. The resulting transmission provides the driver with all the essential driving dynamics of the previous manual transmission, complemented with the performance benefits of the dual-clutch transmission. It can even be driven much like a sequential manual gearbox – with even more performance and emotional driving fun.
Two modes are available to the driver: manual shifting or an adaptive shift program. Manual shifting is done using two paddles on the steering wheel, the left for upshifts and the right for downshifts. Shorter shifting travel and optimised actuating force result in even faster gearshifts with concise feedback, similar to the operating characteristics of the new 911 GT3 Cup race cars.
Alternatively, the driver can also shift using the selector lever, with a shift pattern based on that used in professional motor sports: shifting up is done by pulling the lever back, shifting down by pushing it forward.
The wheels, developed from scratch, round off the package of measures for further improvement of driving dynamics. Compared with the 19-inch wheels of the previous model, the current 20-inch GT3 wheels are not just one inch bigger, but also half an inch wider at the front. The tires on the front axle are also wider. The new 911 GT3 therefore rolls on wheels of size 9 J x 20 with sports tires 245/35 ZR 20 on the front axle, and size 12 J x 20 with sport tires 305/30 ZR on the rear axle.
The wheels are made of forged aluminium for the first time, resulting in low weight and high strength. In spite of the dimensions, the total weight of the wheels including special UHP tires (Ultra High Performance) is less than that of the previous model. This reduces not only the vehicle weight, but also unsprung mass to enhance driving dynamics. Again, the wheels come with a central locking system, which has been optimized further.
Further increase in braking power
Quintessentially Porsche: In the new 911 GT3, more dynamic driving performance goes hand in hand with further improvements in braking performance. At the rear axle, larger braking discs with a 380 mm diameter are used, the ventilation holes of the discs have been redesigned, and cooling was improved by way of additional brake cooling ducts on the rear axle. To reduce unsprung weight, the new 911 GT3 comes with racing-derived composite brake discs with friction rings made of cast iron and aluminium pots, just like its predecessor. The two components are still connected by stainless steel pins.
Unique appearance
The wide body, the special front and rear design with a large wing, and the large wheels make the new 911 GT3 unmistakable at first glance. In addition, the new high-performance sports car is now also available optionally with a new generation of headlights that exclusively consist of LED light sources, giving the coupé a special appearance.
In visual terms, the full LED headlights differ significantly from the standard Bi-Xenon™ system. Instead of a cone-shaped light housing with round projection lens, two tube-shaped light housings are arranged in stages, and the lens contour is truncated at the top and bottom. The basic module in the upper tube is part of the low beam and illuminates the road in a wide and homogeneous manner. The second part of the low beam is located underneath in the Porsche Dynamic Light System (PDLS). Thanks to its swivel function and variable light distribution, this permits various functions such as dynamic cornering lights and low and high beams. The auxiliary high beam in the upper part of the full-LED headlight consists of two components to the left and right of the base module. Its high position provide an even better illumination of the road. The daytime running light consists of four LED spots and a revolving light ring.
3.8L Flat-6
Max. Power:
475 hp
9000 rpm
Max. Torque:
324 lb.-ft.
7-speed Dual-Clutch PDK
$130,400 US Starting


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