Monday 14 May 2012

Nissan GT-R Performance


Performance
Nissan claims the GT-R can reach a top speed of 193 mph (311 km/h) Motor Trend recorded a top speed of 195.0 mph (313.8 km/h). It has been tested to achieve 0-60 mph (97 km/h) times as low as 3.2 seconds with "launch control" and 3.8 seconds without[30] which was improved to 3.5 seconds in March 2009 models. The 2012 GT-R achieves 0-60 mph at 2.8 seconds. Nissan's chief vehicle engineer Malcolm Noronha has indicated that he has never used the term "launch control", which refers to the act of turning off vehicle dynamic control (VDC) and launching the car at around 4500 rpm. However, Nissan's director of product planning John Wiener clearly stated in an interview with Jay Leno that "we (Nissan) actually offer a 'launch mode'". The GT-R user's manual states that turning off the VDC is only meant for escaping low-traction situations such as mud or snow. Nissan has re-programmed the 2010 model year GT-R to reduce the engine speed at launch to around 3,000 to 3,500 rpm with VDC enabled, which is meant to improve acceleration times. The new programming was also installed on old 2009 vehicles still in Nissan's inventory, and is available for existing 2009 vehicles. The new facelifted GT-R however now has a launch mode, which Nissan calls "R-Mode Start", and is activated by setting the Transmission and VDC to "R" mode (the Suspension settings can be left in normal mode), holding the brakes, then the throttle, and finally releasing the brakes. The engine speed is now held at 4,000 rpm in this mode, and it no longer voids the warranty. However, the system allows a maximum of 4 consecutive hard launches before locking itself out, after which it can be unlocked by driving normally for 1.5 miles. Tests by Edmund's Inside Line have shown the 2012 GT-R to achieve 0-60 mph in 2.9 seconds with R-Mode Start activated and did the 1/4 mile in 11.2 seconds going 122.7 MPH.
Nissan GT-R SpecV
Motor Trend achieved a standing quarter-mile time of 11.6 s at 120.0 mph (193.1 km/h) Autocar achieved a 0-100 mph (160 km/h) time of 8.5 seconds.With a manufacturer claimed lap time of 7:26.7 on the base model's Dunlop tires[40] and previously 7:29 min on standard Japanese market tires, the GT-R is currently one of the fastest production cars to lap the Nürburgring circuit, although Porsche accused Nissan of falsifying those claims in September 2008. Porsche claims to have conducted their own test of the GT-R using no modifications and stock tires and achieved a best time of 7:54. Nissan officially disputed Porsche's claim in October 2008.
The German magazine sport auto achieved a time of 7:50 on the Nürburgring with a car supplied to them by Nissan during an initial short test in 2007, while testing by Drivers Republic of a GT-R and GT2 in stock form resulted in times of 7:55 for the GT-R and 7:49 for the GT2 respectively.[48] Both tests were conducted in partially damp conditions and by automotive journalists rather than professional track drivers. In 2009, in a full "super test" sport auto achieved a time of 7:38 minutes on the Nürburgring with a standard GT-R driven by Horst von Saurma, identical to a later "super test" Corvette ZR1 time. In a first test with the facelifted GTR model, 'sport auto' recorded a lap time of 7:34 on the Nürburgring with a standard GT-R driven by Horst von Saurma.Autocar released a video comparison of the GT-R with the Porsche 911 GT3 and BMW M3. Driven by test driver Chris Harris the GT-R was the fastest of the three. Autocar released another comparison test at the Isle of Man on a 4.5 km closed public road with the Audi R8, Lotus Elise, and Lamborghini Gallardo LP560-4. The GT-R's time of 1:56:69 was behind the Gallardo's 1:55:99 time, however because the GT-R was Japanese-spec its top speed was limited to 112 mph, the reviewer noted the GT-R was stuck on the limiter for ~10–11 seconds and without the limiter would have "blitzed the Lamborghini". In CAR Magazine's test with the 911 Turbo, BMW M3, and Audi R8 at Rockingham the GT-R was the fastest.[56] Evo tested the GT-R alongside the 911 GT3 at the Bedford Autodrome circuit, the GT-R ran a 1:21.7 lap time compared to GT3's 1:22.6 time. In a Fifth Gear test with the 911 Turbo, Bruno Senna was able to achieve faster lap times in the GT-R. Car and Driver compared the GT-R on Reno-Fernley Raceway with the 911 Turbo and BMW M3, the GT-R's lap time of 1:26.7 made it the fastest on the track. Road & Track was able to achieve quick lap times with the car on Buttonwillow Raceway, clocking in at 1:56.9 which was over 5 seconds faster than the Chevrolet Corvette C6 Z06 and 911 Turbo. In an Edmunds.com 6-way test on the Streets of Willow and an improvised mountain road, the GT-R posted faster times than the Audi R8 and Porsche 911 Carrera. Auto Bild compared the GT-R with the 911 Turbo and V10 Audi R8 at Contidrome, the GT-R's time of 1:30.95 placed it ahead of both the Porsche 911 (1:31.75) and the Audi R8 (1:32.11).
A GT-R pictured in London
In another Autocar comparison with the PDK 911 Turbo (997.2) and V10 Audi R8 on the Castle Combe Circuit the GT-R's laptime of 1:14.6, was faster than the 911's time of 1:14.9 and the R8's 1:15.5 lap time. In December, Auto, Motor und Sport published a comparison between the GT-R, PDK 911 Turbo (997.2) and the Audi R8 V10. Around the 'small' Hockenheimring circuit, the GT-R achieved a time of 1:12.0 against the 911's 1:11.5 and the Audi's 1:12.3. The sport auto magazine had tested the GT-R on the 'small' Hockenheimring circuit and had recorded a lap time of 1:10.7 during the full "supertest" In July 2009, CAR Magazine published a comparison of the revised 911 GT3 (997.2) and the GT-R at the Nurburgring. A time of 7:49 was achieved for the GT3 and 7:51 for the GT-R.[67] It should be noted that these times are not directly comparable to previous Nurburgring tests, as they included a section of track near the pits normally excluded from timing. At Spring Mountain Motorsports Ranch Road and Track managed a 1:20.9 lap time compared to the ZR1's time of 1:20.1 and the 911 Turbo's (997.2) time of 1:21.3.[68] In another Motor Trend comparison at the Streets of Willow, driver Randy Pobst's laptime of 1:20.25 in the facelifted GT-R was slightly faster than the competing Corvette Z06 equipped with optional carbon ceramic brake rotors. On Willow Springs International Motorsports Park, Edmunds.com was able to achieve lap times of 1:25.09 with the 2009 GT-R compared to the Corvette ZR1's time of 1:23.87. On the Las Vegas Motor Speedway infield road course, Motor Trend was able to achieve lap times with the GT-R that were almost as fast as the Ferrari 599 GTB Fiorano and 911 GT2 and 1.2 seconds slower than a Corvette ZR1. The pre-2011 GT-R currently holds a lap time of 1:19.7 around the Top Gear Test Track, with the Facelifted GT-R holding a time of 1:17.8, equalling the Pagani Zonda F, beating the Chevrolet Corvette ZR1 by 2.6 seconds, and being the fastest Japanese car to lap the track. On Top Gear Australia's test track the GT-R posted a lap time of 1:07.06, putting it in second place 0.14 seconds behind the 997 GT2. Top Gear laps are conducted from a standing start and under varying conditions.

Nissan GT-R 2012

The Nissan GT-R is a sports car produced by Nissan released in Japan on December 6, 2007, the United States on July 7, 2008, and the rest of the world in March 2009.

History

Between 1969 and 1974, and again between 1989 and 2002, Nissan produced a high performance version of its Skyline range called the Nissan Skyline GT-R. This car proved to be iconic for Nissan and achieved much fame and success on road and track. The Nissan GT-R, although no longer carrying the "Skyline" badge, has heritage in the Nissan Skyline GT-R. Like the Skyline GT-Rs R32 through R34, the Nissan GT-R is four-wheel drive with a twin-turbo 6 cylinder engine; however, the evolutionary, incremental changes between Skyline models R32 through R34 have been done away with. The four-wheel-steering HICAS system has been removed, and the former straight-6 RB26DETT engine has been replaced with a new V6 VR38DETT. Because of the GT-R's heritage, the chassis code for the all-new version has been called CBA-R35 or 'R35' for short (where CBA is the prefix for emission standard), carrying on the naming trend from previous Skyline GT-R generations. The GT-R has also retained its Skyline predecessor's nickname Godzilla.
Concepts
Two concept vehicles were displayed at motor shows prior to the unveiling of the production model. The first concept was shown at the Tokyo Motor Show in 2001 to preview what a 21st century GT-R would look like.At the 2005 Tokyo Motor Show, Nissan unveiled a redesigned concept, the GT-R Proto, stating that the production GT-R would be 80-90% based on this concept.
Production

The production version of the GT-R debuted at the 2007 Tokyo Motor Show, launching in the Japanese market on December 6, 2007. The U.S. official launch was 7 months later on July 7, 2008. Universal Nissan in Los Angeles provided a customer with the delivery of a new GT-R, fresh from the production line at 12:01 a.m., on July 7, 2008. The Canadian launch was also in July 2008. Europe became the third consumer market, where it launched in March 2009. The large disparity in initial marketing between these regional releases is due to Nissan having to build GT-R performance centers where the car is serviced. Also the engine and rear-mounted dual-clutch gearbox are built by hand, thus limiting production to around 1000 cars a month.
Facelift
The revised GT-R (2011 model year, 2012 model year for the US) features an engine with revised mapping, changes to valve timing, larger inlets and a revised exhaust system which boosts rated power to 530 bhp and 612Nm of torque from 3200 to 6000rpm. Changes also include a new more rigid front strut bar made from carbon composite, larger front brake rotors, new lighter and stiffer wheels, and revised Dunlop tires. Cosmetic changes include a new front bumper with integrated LEDs. The front bumper improves cooling to the radiator and front brakes while reducing drag. A new rear diffuser improves downforce and also includes additional rear cooling ducts. The interior has been revised to improve the quality. The revised GT-R went on sale in Japan from mid November 2010 and February 2011 in Europe, North America and other regions.
Nissan’s VP of global product planning Andy Palmer has confirmed that the current GT-R (R35) will be replaced by 2013.
Specifications

The Nissan GT-R is powered by the VR38DETT engine, a 3,799 cc (3.8 L; 231.8 cu in) DOHC V6 with plasma transferred wire arc sprayed bores. Two parallel Ishikawajima-Nek-Harima Heavy Industries (IHI) turbochargers provide forced induction. Production vehicles produce a manufacturer-claimed engine output of 485 PS (357 kW; 478 hp) at 6400 rpm and 434 lb·ft (588 N·m) at 3200-5200 rpm. The engine also meets California Air Resources Board Ultra Low Emission Vehicle (ULEV) standards. A curb weight of 1,730 kg (3,800 lb) or 1,736 kg (3,830 lb) with side curtain airbags is achieved using a jig welded steel chassis with aluminum used for the hood, trunk, and doors. A rear mounted six-speed BorgWarner designed dual clutch semi-automatic transmission built by Aichi Machine Industry is used in conjunction with the ATTESA E-TS system to provide power to all four wheels and along with Nissan's Vehicle Dynamics Control (VDC-R) to aid in stability. Three shift modes  can also be selected for various conditions