Porsche 911 GT2

Porsche 911 GT2
Overview
Manufacturer	Porsche
Production	1993 – 2010
Assembly	Stuttgart, Baden-Württemberg, Germany
Designer	Pinky Lai Harm Lagaay
Body and chassis
Class	Sports car
Body style	2-door 2 seater coupé
Layout	RR layout
Related	Porsche 911 GT3 Porsche 911 Turbo
Dimensions
Curb weight	3,175 lb (1,440 kg)

The Porsche 911 GT2 is a sports car built by the German manufacturer Porsche since 1994. It is based on the 911 Turbo, and retains the turbo, but features numerous upgrades, including a more powerful engine, larger brakes, and stiffer suspension calibration. The GT2 is significantly lighter than the Turbo due to the use of rear-wheel drive instead of all-wheel drive, and the lightening or removal of interior components.

Road car

993 generation

Porsche 993
Overview
Production	1993-1998
Powertrain
Engine	3.6L Twin-Turbo H6
Transmission	6-speed manual
Dimensions
Wheelbase	2,272 mm (89.4 in)
Length	4,245 mm (167.1 in)
Width	1,855 mm (73.0 in)
Height	1,270 mm (50.0 in)

The 993-generation GT2 was initially built in order to meet homologation requirements for motorsports. The GT2s were developed as Porsche's customer entry in international grand tourer racing, replacing the 964-generation Carrera RSRs. Because the cars were built to meet the GT2 class regulations, the road cars were named accordingly. It featured widened plastic fenders, and a larger rear wing with air scoops in the struts. The 993 GT2's original 3.6 litre engine developed 430 hp (321 kW); in 1998 it was upgraded to 450 hp (336 kW). 57 road cars were built (seven of which were right-hand drive).

Technical specification:

• Configuration Air Cooled Twin Turbo Flat 6
• Transmission 6-speed manual
• Valvetrain SOHC 2 valves / cylinder
• Displacement 3600 cc / 219.7 cu in
• Power 335.6 kW (456 PS; 450 hp) @ 6000 rpm
• Torque 585.71 Nm / 435 ft·lbf @ 3500 rpm
• Bhp / Liter 125.0 bhp (93.2 kW; 126.7 PS) per litre
• Bore 99.1 mm (3.9 in)
• Stroke 76.2 mm (3.0 in)
• Weight 1,295 kg (2,855 lb)
• Length 4,245 mm (167.1 in)
• Width 1,855 mm (73.0 in)
• Height 1,270 mm (50.0 in)
• Wheelbase 2,272 mm (89.4 in)
• Front Track 1,475 mm (58.1 in)
• Rear Track 1,550 mm (61.0 in)
• Top Speed 301 km/h (187 mph)
• 0 - 60 mph 3.9
• quarter mile 12.1 at 117mph

996 generation

Porsche 996
Overview
Production	1999-2005
Powertrain
Engine	3.6L H6
Transmission	6-speed manual
Dimensions
Wheelbase	2,355 mm (92.7 in)
Length	1999-2003: 4,450 mm (175.2 in) 2004-05: 4,445 mm (175.0 in)
Width	1,830 mm (72.0 in)
Height	1,275 mm (50.2 in)

In 1999, the 993-generation 911 was replaced with the new 996 model. It would be two years before a new GT2 model would arrive, but in that time Porsche had decided to abandon the GT2 for motorsports use, instead concentrating on the new naturally-aspirated 911 GT3.

The new GT2 featured a turbo-charged version of the GT3's 3.6L H6 engine. It featured an output of 462 hp (345 kW), which was later increased to 483 hp (360 kW). Like the 993 GT2, its body differed significantly from those of other 996s; major differences included wider fenders, a more aggressively-shaped nose, and a large rear wing.

The torque curve reaches its top a little higher in the rpm range, there's very little lag in the turbo spool-up. According to a test of Car and Driver the 2002 GT2 delivered right-now passing punch even in sixth gear. Despite a 10-millimeter reduction in static ride height over the 911 Turbo, the drag coefficient was slightly higher — 0.34 Cd vs. the Turbo's 0.33 — due to the fixed rear wing.

Technical specification:

• Displacement 3.6 litre, 4 valves per cylinder

• Bore × stroke 100.00 mm (3.9 in) × 76.40 mm (3.0 in) 3.94 in (100 mm) × 3.01 in (76 mm)
• Compression ratio 9.40:1
• Bore/stroke ratio 1.31

• Maximum power 475 hp (354 kW) @ 5700 rpm
• Specific output 132.2 bhp/litre

• Maximum torque 640.0 N⋅m (472.0 lb⋅ft) @ 3500 rpm
• Specific torque 177.78 Nm/litre

• Wheelbase 2,355 mm (92.7 in)
• Length 4,450 mm (175.2 in)
• Track front 1,485 mm (58.5 in)
• Track rear 1,520 mm (59.8 in)
• Width 1,830 mm (72.0 in)
• Height 1,275 mm (50.2 in)
• Kerb weight 1,430 kg (3,153 lb)

• Fuel capacity 89 L (24 US gal; 20 imp gal)

• 0-60 mph 3.7 s
• 0-100 mph 8.3 s
• 1/4 Mile 11.9 at 120mph
• Top speed 319 km/h (198 mph)
• Power-to-weight 332.87 bhp (248 kW; 337 PS) / ton

997 generation

Porsche 997
Overview
Production	2008-Present
Powertrain
Engine	3,600 cc (3.6 L; 220 cu in) H6
Transmission	6-speed manual
Dimensions
Wheelbase	2,350 mm (92.5 in)
Length	4,469 mm (175.9 in)
Width	1,852 mm (72.9 in)
Height	1,285 mm (50.6 in)

The Porsche 996 911 GT2 was superseded by the 997-generation GT2 in 2007 after a brief hiatus, with cars arriving at dealerships in November after an official launch at the 62nd Frankfurt Motor Show.

The new 997 GT2 remained based on the 3.6 litre flat-6 engine, but now featured twin variable geometry turbochargers, which generated 390 kW (523 hp) at 6500 rpm. The GT2 accelerates in 3.6 seconds to 100 km/h (62 mph) and in 10.6 seconds to 200 km/h (124 mph) and has a maximum top speed of 331 km/h (206 mph). This makes it the first Porsche 911 to exceed the 200 mph (322 km/h) top speed, with the exception of the 1998 Porsche 911 GT1 which has a mid-mounted engine, unlike any other car bearing the 911 moniker. The Porsche 997 GT2 also has a curb weight of 1,440 kg (3,175 lb), 680 N⋅m (500 ft⋅lbf) of torque from 2200 to 4500 rpm, and a 6-speed manual gearbox.

The American auto magazine Motor Trend recently tested a 2008 Porsche 911 GT2 0-60 mph at 3.3 seconds, and 11.3 seconds at 129.1 mph (207.8 km/h) for the quarter mile. The GT2 also recorded a braking distance from 60 mph (97 km/h) to 0 of 98 feet (30 m) and recorded 1.10g lateral grip.

The appearance of the 997 GT2 once again differs from its sister-car, the 997 Turbo. It has a revised front lip, also carries a newly designed rear wing with two small air inlets on either side, and it has a different rear bumper now featuring titanium exhaust pipes and shark fin outlets.

German Porsche test driver Walter Röhrl recently lapped the Nürburgring Nordschleife on a public day in 7 minutes 32 seconds in the new 997 GT2.

On May 4, an RS variant has been announced to German dealers in Leipzig. The GT2 RS is rumored to develop 620hp and weigh 200 pounds lighter than the standard GT2.

Technical specification:

• Cylinders 6
• Displacement 3600 cc
• Engine layout Rear engine
• Engine power 390 kW (530 PS; 520 hp)
• Torque 680 N⋅m (500 ft⋅lbf) @ rpm 2,200 - 4,500 rpm
• Compression ratio 9.0 : 1
• Front brakes: 6-piston monobloc aluminum-fixed calipers
• Rear brakes: 4-piston monobloc aluminum-fixed calipers
• Top Speed 331 km/h (206 mph)
• 0-100 km/h 3.6 s
• 0-200 km/h 10.6 s
• 0-30 mph 1.2
• 0-60 mph 3.3 s
• 0-100 mph 7.3 s
• 0-150 mph 15.9
• 0-186 mph 34.0
• 1/4 Mile 11.3 130.1mph
• Length 4,469 mm (176 in)
• Width 1,852 mm (73 in)
• Height 1,285 mm (51 in)
• Wheelbase 2,350 mm (93 in)
• Drag coefficient (Cd) 0.32
• Curb Weight 3,167 lb (1,437 kg)
• Luggage Area Volume 0.1 m³ (3.5 cu ft)
• Fuel tank 67 L (18 US gal; 15 imp gal)

Motorsports

In 1993, Porsche had experimented with the use of a turbocharged 911 in international motorsports with the use of the extensively modified turbo 964, named the Turbo S LM-GT. Seeing the potential of the car not only to be fast and reliable, as well as customer demand for a car to replace the 964 generation Carrera RSRs, Porsche chose to develop the turbocharged 993 for customer use.

The 993 GT2 race car would featured a stripped interior, built-in rollcage for safety, minor adjustments to the bodywork and wings in order to decrease weight as well as increase downforce, as well as wider fenders to handle racing slicks. The suspension would be modified to better handle racing use, while the engine would be slightly tweaked for endurance use. Twin KKK turbochargers running mandated air restrictors allowed for 450 hp (336 kW).

At the same time, Porsche would also develop a GT2 Evo, able to run in the GT1 category. This further modified the GT2 by increasing power to 600 hp (447 kW) through the use of larger turbochargers. Other modifications included a new rear wing mounted higher, larger fenders to allow for the wider tires allowed in GT1, and a decrease in weight to 1,100 kg (2,425 lb) . The GT2 Evo would be short-lived however as Porsche decided to replace it with the purpose-built 911 GT1 in 1996.

The GT2 and GT2 Evos were initially campaigned in the BPR Global GT Series as well as several other smaller national series, and earned seven wins in their class out of eleven rounds in their first full BPR season in 1996, as well as a class victory in the 24 Hours of Le Mans, and again in 1997. In the new FIA GT Championship that year, although Porsche faced factory-backed competition from Chrysler, the 911 GT2s managed to win three races. By 1998 however, the capabilities of the GT2 were unable to combat the increased number of Dodge/Chrysler Viper GTS-Rs in the series, earning only a sole victory.

By 1999 the GT2s had been overpowered by the Vipers, as well as newcomers Lister, however Roock Racing managed to win the GT2 at the 24 Hours of Daytona. An increase in engine displacement to 3.8 litres in 2000 was unable to help Porsche, and support for the project ended. Porsche chose instead to concentrate on the new N-GT category with the GT3-Rs that same year. GT2s continued to be used by small teams up to 2004.

With the launch of the 996 generation GT2, several privateers attempted to continue on the motorsports history by building their own racing versions. Belgian PSI Motorsports' 911 Bi-Turbo and German A-Level Engineering's 911 GT2-R were used to mix success in national series such as Belcar, but were unable to be successful in international series.

External links

• Porsche Cars North America - Porsche 997 GT2 microsite
• Porsche Cars North America - 1995 Porsche 911 GT2
• Porsche Cars North America - 1995 Porsche 911 GT2 Evo