The Porsche 911 GT2 is a high-performance sports car built by the German automobile manufacturer Porsche from 1993 to 2009, and then since 2010 as the GT2 RS. It is based on the 911 Turbo, and uses a similar twin-turbocharged engine, but features numerous upgrades, including engine upgrades, larger brakes, and stiffer suspension calibration. The GT2 is significantly lighter than the Turbo due to its use of rear-wheel-drive instead of all-wheel-drive system and the reduction or removal of interior components. As a result, the GT2 (now GT2 RS) is the most expensive and fastest model among the 911 lineup.
The 993 GT2 was initially built in order to meet homologation requirements for GT2 class racing. Because the cars were built to meet the GT2 class regulations, the road cars were named accordingly (but badged as the 911 GT). The 993 GT2 featured widened plastic fenders and a larger rear wing with air scoops in the struts for improved engine cooling. The 993 GT2's original 3.6 L (220 cu in) engine generated a maximum power output of 316 kW (430 PS; 424 hp); in 1998 it was upgraded to 331 kW (450 PS; 444 hp). 57 road cars were built (thirteen of which were right-hand drive).
In 1999, the 993 was replaced with the new 996 model. The new GT2 took two years to develop and during that time, Porsche decided to abandon the GT2 for motorsports use, instead concentrating on competing in GT3 class racing with the new naturally aspirated 911 GT3.
Developed primarily as a road car in contrast to its predecessor, the new GT2 featured a twin-turbocharged version of the GT3's 3.6 L (220 cu in) flat-six engine. It generated a maximum output of 340 kW (462 PS; 456 hp), which was later increased to 355 kW (483 PS; 476 hp). Like the 993 GT2, the body of the 996 GT2 differed significantly from those of other 996 variants; major differences included wider fenders, a more aggressively shaped nose, and a large rear wing.
According to road testing performed by Car and Driver magazine, the GT2 suffers from hardly any turbo lag. Despite a 10-millimeter reduction in ride height from the 911 Turbo, the drag coefficient is slightly higher — 0.34 Cd vs. the Turbo's 0.33 — due to the fixed rear wing.
The 996 GT2 was superseded by the 997 GT2 in 2007 after a brief hiatus, with cars arriving at dealerships in November after an official launch at the 62nd Frankfurt Motor Show.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 GT2's engine was based on the 3.6 L (220 cu in) flat-6 engine as seen on the Turbo, but featured two variable geometry turbochargers. The engine generated a maximum power output of 390 kW (530 PS; 523 hp) at 6,500 rpm and 680 N⋅m (502 lb⋅ft) of torque at 2,200 rpm. The GT2 accelerated from 0 to 100 km/h (62 mph) in 3.6 seconds and on to 200 km/h (124 mph) in 10.6 seconds, and had a maximum top speed of 328 km/h (204 mph). This made it the third Porsche production road car to exceed the 322 km/h (200 mph) barrier, with the exception of the 1998 911 GT1 (of which only 20 units were produced for street use, solely to satisfy ACO homologation requirements for racing).
The American automotive magazine Motor Trend tested a 2008 Porsche 911 GT2 and achieved a 0-60 mph (97 km/h) acceleration time of 3.3 seconds, and a quarter mile time of 11.3 seconds at 129.1 mph (207.8 km/h). The GT2 also recorded a braking distance from 60 to 0 mph of 98 feet (30 m), and 1.10g of lateral grip.
The appearance of the 997 GT2 once again differed from its sister car, the 997 Turbo. It had a revised front lip, a newly designed rear wing with two small air inlets on either side, and a revised rear bumper featuring titanium exhaust pipes and shark fin outlets.
German Porsche test driver Walter Röhrl lapped the Nürburgring Nordschleife on a public day in 7 minutes, 32 seconds in the 997 GT2.
A total of 194 units were sold in the United States and 19 units in Canada.
Technical specifications of the standard 997 GT2:
On May 4, 2010, an RS variant was announced to German dealers in Leipzig. The engine in the GT2 RS generated a maximum power output of 456 kW (620 PS; 612 hp) and 700 N⋅m (516 lb⋅ft) of torque. The GT2 RS weighs 70 kg (154 lb) less than the GT2, allowing for a top speed of 330 km/h (205 mph) and a 0–100 km/h (62 mph) acceleration time of 3.5 seconds.
According to the then Porsche Motorsports manager Andreas Preuninger, the RS was conceived around 2007 as a skunk-works effort. The 727 code number selected for the project corresponds to one of the Nissan GT-R's lap times around the Nurburgring's Nordschleife. When the dust settled, Porsche claimed that test driver Timo Kluck had supposedly eclipsed that target by an impressive nine seconds.Porsche produced only 500 units of the GT2 RS globally.
The 991 GT2 RS was initially unveiled at the Xbox 2017 E3 briefing along with the announcement of the Forza Motorsport 7 video game where it was revealed as the cover car as well as being included as a playable vehicle.
The car was officially launched by Porsche at the 2017 Goodwood Festival of Speed along with the introduction of the 911 Turbo S Exclusive Series. The 991 GT2 RS is powered by a 3.8 L twin-turbocharged flat-6 engine that has a maximum power output of 515 kW (700 PS; 691 hp) at 7,000 rpm and 750 N⋅m (553 lb⋅ft) of torque, making it the most powerful production 911 variant ever built. Unlike the previous GT2 versions, this car is fitted with a 7-speed PDK transmission to handle the excessive torque produced from the engine. Porsche claims that the car will accelerate from 0-97 km/h (0-60 mph) in 2.7 seconds, and has a top speed of 340 km/h (211 mph).
The car has a roof made of magnesium, front lid, front and rear wings and boot lid made of carbon-fibre, front and rear apron made of lightweight polyurethane, rear and side windows made of polycarbonate and a exhaust system made of titanium. Porsche claims that the car has a wet weight of 1,470 kg (3,241 lb).
A Weissach package option is available, which reduces weight by 30 kg (66 lb), courtesy of the additional use of carbon-fibre and titanium parts. This includes the roof, the anti-roll bars, and the coupling rods on both axles being made out of carbon-fibre, while the roll cage is made from titanium. The package also includes a set of magnesium wheels. The car was available in the United States from early 2018.
A production run of 1,000 units is planned.
Complete article available at this page.
This post have 0 komentar
EmoticonEmoticon