Friday, September 4, 2009

Nissan GT-R

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

Nissan GT-R[1]
Manufacturer Nissan
Production Q4 2007-present
Assembly Tochigi, Tochigi, Japan
Predecessor Nissan Skyline GT-R
Class sports car
Body style(s) 2-door coupé
Layout Front engine, four-wheel drive
Platform Premium Midship
Engine(s) 3.8L VR38DETT twin-turbo V6
Transmission(s) 6-speed semi-automatic dual clutch transmission[2]
Wheelbase 2780 mm (109.4 in)
Length 4655 mm (183.3 in)
Width 1895 mm (74.6 in)
Height 1370 mm (53.9 in)
Curb weight 1730 kg (3814 lb)
Designer Shirō Nakamura

Production model

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 07, 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 late in the year. 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.[14]


The VR38DETT engine

The Nissan GT-R is powered by the VR38DETT engine, a 3,799 cc (3.8 L; 231.8 cu in) DOHC V6. Two parallel Ishikawajima-Harima Heavy Industries (IHI) turbochargers provide forced induction.[15] Production vehicles produce a manufacturer-claimed engine output of 480 bhp (360 kW) at 6400 rpm and 434 lb·ft (588 N·m) at 3200-5200 rpm.[16] According to independent dynamometer tests, the GT-R produces 416 hp (310 kW) to 475 hp (354 kW) and 414 lb·ft (561 N·m) to 457 lb·ft (620 N·m) at the wheels.[17][18] The engine also meets California Air Resources Board Ultra Low Emission Vehicle (ULEV) standards.[19] 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.[20] A rear mounted 6 speed dual clutch semi-automatic transmission 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) aids in stability. Three shift modes can also be selected for various conditions. The GT-R has a drag coefficient of 0.27.[21]

  • Displacement: V6 3,799 cc (3.8 L; 231.8 cu in)
  • Horsepower: 480 bhp (360 kW) at 6400 rpm* 485 bhp (362 kW)**
  • Torque: 430 lb·ft (580 N·m)* 434 lb·ft (588 N·m)**
  • Twin Turbo maximum boost: 17.8 psi (123 kPa)*
  • Redline: 7000 rpm
  • Drivetrain: Premium Midship AWD
  • Curb weight: estimated 3,800 lb (1,700 kg)*
  • Production: 2500 units per year (US)
  • Price: US$76,840 to US$79,090[22]
  • Top Speed: 193 mph (311 km/h)*
* manufacturer claimed
** 2010 model year


Cutaway model showing rear mounted transmission

Nissan claims the GT-R can reach a top speed of 192 mph (309 km/h),[23] Motor Trend recorded a top speed of 195.0 mph (313.8 km/h).[24] It has been tested to achieve 0-60 mph (97 km/h) times as low as 3.2 seconds with "launch control"[25] and 3.9 seconds without[26] (improved to 3.5 seconds in models produced since March 2009[27]). Nissan's chief vehicle engineer Kazutoshi Mizuno has indicated that he has never used the term "launch control", which refers to the act of turning off vehicle dynamic control (VDC) and launch the car at around 4500 rpm.[28] 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, and that damage to the transmission is not covered under warranty if the VDC is used in other ways.[29][28] It reportedly costs $20,000 USD to replace a damaged transmission outside of warranty.[30] 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.[31]

Car and Driver achieved a standing quarter-mile time of 11.5 s at 200 km/h (120 mph).[32] Evo magazine achieved a 0-100-0 mph time of 13.9 seconds.[33] Autocar achieved a 0-100 mph (160 km/h) time of 8.5 seconds.[34]

With a manufacturer claimed lap time of 7:26.7 on the base model's Dunlop tires[35] 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,[36][37] although Porsche accused Nissan of falsifying those claims in September 2008.[38][39] 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.[40][41] 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,[42] 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.[43] Both tests were conducted in partially damp conditions and by automotive journalists rather than professional track drivers. In a full test in 2009 sport auto achieved a time of 7:38 minutes on the Nürburgring with a standard GT-R when being driven by Horst von Saurma.[42]

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.[44][45][46] 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.[47] Car and Driver compared the GT-R on Reno-Fernley Raceway with the Porsche 911 Turbo and BMW M3, the GT-R's lap time of 1:26.7 made it the fastest on the track.[48] Road & Track was able to achieve quick lap times with the car on Buttonwillow Raceway, clocking in at 1:56.9 just over 5 seconds faster than the Chevrolet Corvette C6 Z06 and Porsche 911 Turbo.[49][50] On Willow Springs International Motorsports Park, Edmunds was able to achieve lap times of 1:25.09 compared to the Corvette ZR1's time of 1:23.87.[51] In an earlier Edmunds 6-way test which included the Audi R8 on both the Streets of Willow and an improvised mountain road, the GT-R was quickest.[52] On the Las Vegas Motor Speedway infield road course, Motor Trend were able to achieve lap times with the GT-R that were almost as fast as the Ferrari 599 GTB Fiorano and Porsche 911 GT2 and 3 seconds slower than a Chevrolet Corvette ZR1.[53] The GT-R currently holds a lap time of 1:19.7 around the Top Gear Test Track, equaling that of the Ferrari 430 Scuderia.[54] 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 Porsche 997 GT2. Top Gear laps are conducted from a standing start.


The customizable multifunction display integrated into the dash of the GT-R

Nissan chief creative officer, Shirō Nakamura, has likened the new GT-R to the eponymous giant robots of the Gundam series. Nakamura states: "The GT-R is unique because it is not simply a copy of a European-designed supercar, it had to really reflect Japanese culture."

Nakamura noted that the GT-R's square lines and vents were influenced by Gundam robots. Nissan's American designers sculpted the rear three quarters of the vehicle, while their European designers sculpted the roofline.[55]

Polyphony Digital, creators of the Gran Turismo series of racing video games, were themselves involved in the development of the GT-R, having been contracted to design the GT-R's multifunction display.[56]


GT-R SpecV

Nissan introduced the GT-R SpecV on January 7, 2009 at the 2009 Tokyo Auto Salon.[57] Exterior changes from the base GT-R consist of a carbon fiber rear spoiler, grille, and brake ducts, along with an exclusive Ultimate Black Opal paint job. Interior changes include a set of carbon fiber Recaro front seats with the rear seats being completely removed. Carbon fiber covers the center storage box, instrument panel, and replaces the majority of the interior trim.

The GT-R SpecV is powered by the standard twin-turbo 3,799 cc (3.8 L; 231.8 cu in) V6 with no increase in (peak) horsepower. But a new high gear boost controller that allows a temporary increase in boost pressure to the IHI twin turbochargers, now larger than those on the standard GT-R, should deliver more torque in mid to high-range revs. Other mechanical changes include a titanium exhaust, reworked suspension, carbon ceramic brakes, and 20-inch (510 mm) NISMO wheels. Overall weight is decreased by 132 lb (60 kg) over the standard GT-R.[58]

Japan sales begin on February 2, 2009 at seven pre-selected dealers who are staffed by mechanics with special GT-R SpecV training and are knowledgeable of racing circuit driving. Pricing is set at ¥15,750,000 (over US$160,000). Nissan has not announced any plans to sell the SpecV outside of Japan.

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