Porsche 911 GT3 är en högpresterande version av Porsche 911 en sportbil i första hand avsedd för racing. Det är en linje av högpresterande modeller, som började med 1973 911 Carrera RS. Porsche 911 GT3 är uppkallad efter Fédération Internationale de l’Automobile (FIA) Group GT3]-klassen där den var avsedd att konkurrera.
For 2010, the second generation 911 GT3 RS (known as 997.2 GT3 RS) received an additional 15 PS (11 kW; 15 hp) due to a new 3.8-litre flat-6 engine, bringing total power output up to 450 PS (331 kW; 444 hp). The car was not approved for competition in the United States by IMSA American LeMans. Grand-Am originally did not approve the car, but after performance issues (a Porsche team did not compete at the Indy Grand Prix of Alabama round), Grand-Am approved the second-generation car in April 2010. Porsche test drivers had intended to enter the 2011 12 Hours of Nürburgring on a standard road legal 911 GT3 RS, but had to withdraw due to health reasons from the team that comprised racers Roland Asch and Patrick Simon, plus journalists Horst von Saurma and Chris Harris. The car, entered in cooperation with sport auto (Germany), is registered as S-GO 2400, and was driven from Weissach to Nürburg. The RS was modified according to safety requirements, which included a larger roll cage and fire extinguisher. As no race tyres were available for 19" wheels, the 18" wheels of the Carrera Cup racers were used. Asch qualified with 9:15, 42nd overall, and 9th among the 17 SP7 class entrants, only beaten by its race-prepared Porsche 997 siblings. In an otherwise disappointing race for Porsche, with the best race 997 finishing only 6th, the road-legal car did 145 laps, 9 less than the winning BMW, for place 13. It supposedly had to cover another 306 km, on the Autobahn back home.
. Porsche Carrera CupThe 911 GT3 RS 4.0, launched in 2011, was the final evolution of the 997 GT3 and featured a 4.0 litre flat-six engine (the largest engine offered in a street-legal 911). The engine itself uses the crankshaft from the RSR with increased stroke dimensions (from 76.4 mm to 80.4 mm). This change increased the power output to 500 PS (368 kW; 493 hp) at 8,250 rpm and 460 N⋅m (339 lbf⋅ft) of torque at 5,750 rpm. Chassis development was influenced by the GT2 RS and uses parts from other RS 911s. Front dive planes give additional downforce up front. The car weighs in at 1,360 kg (2,998 lb), giving it a power-to-weight ratio of 365 hp per ton. Only 600 cars were built. At 493 hp (368 kW), the engine is one of the most powerful six-cylinder naturally aspirated engines in any production car with a 123.25 hp (92 kW) per litre output. Performance figures include 0-97 km/h (60 mph) acceleration time of 3.5 seconds and a top speed of 311 km/h (193 mph). The lap time on the Nürburgring Nordschleife is 7 minutes and 27 seconds
Detta är ett fantastiskt exemplar av Porsches 911 GT3 RS från 2011.
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