Nissan developed the R32 GT-R with Group A homologation as a primary objective. The centrepiece is the RB26DETT — a 2.6-litre DOHC inline-six with twin Garrett T03 turbochargers, a closed-deck iron block, and four valves per cylinder. Official output was listed at 276 horsepower at 6,800 rpm and 260 lb-ft of torque at 4,400 rpm, consistent with the JAMA-coordinated voluntary cap agreed by Japanese manufacturers; NISMO's own data placed actual output closer to 313 horsepower.
Drive goes through Nissan's ATTESA E-TS electronically controlled all-wheel-drive system, one of the first such systems fitted to a production car. Four-wheel steering was provided by Super-HICAS. Kerb weight is approximately 1,428 kg. A total of 43,994 R32 GT-Rs were produced between 1989 and 1994, across standard, V-spec, NISMO, and N1 specifications.
A specialist homologation derivative, the Nismo N1, was produced between December 1989 and March 1990 in a run of 500 units, with an additional 60 cars held back for competition use. The N1 carried Garrett T04B turbochargers in place of the standard T03s, deleted the stereo and air conditioning, removed ABS, fitted cross-drilled brake discs, and brought the car to approximately 1,400 kg — around 30 kg lighter than standard. Colour was restricted to Gun Grey Metallic. The N1 was supplied directly to racing teams and serious amateur competitors and served as the base for many Group A campaign cars.
The R32 GT-R debuted in the Japan Touring Car Championship at Sugo in 1990, entered by two Nissan-backed teams: Calsonic-Hoshino and Reebok-Hasemi. From 1990 to 1993 the car won all 29 races it started in the JTCC — a clean sweep across four consecutive seasons. The car then transitioned to the Japan GT Championship from 1993 through 1995, where it continued to compete at the front of the field.
The GT-R's international programme extended to Australia and Europe. Nissan entered cars in the Australian Touring Car Championship in 1991 and 1992 and contested the Bathurst 1000 both years. The Australian appearances introduced the car to English-language motoring media; the term "Godzilla" was coined by the Australian press in this period and subsequently entered global JDM vocabulary. In 1991, the R32 GT-R also competed at the Spa 24 Hours, making it the first Japanese car to start the Belgian endurance classic.
The success in Australia prompted the series organisers to impose additional ballast and boost restrictors on the GT-R for subsequent appearances, yet the car remained competitive even under those penalties.
The R32 served as the foundation of the modern GT-R tuning industry. Its robust RB26DETT engine tolerates substantial power increases over the stock internals. The 276-horsepower gentleman's agreement figure encouraged a culture of discreet understatement that persists around the nameplate to the present day. The R32 became the first GT-R eligible for US import under the 25-year rule in 2014, triggering a wave of importation that brought the car directly into North American enthusiast and sim-racing communities.
The RB26DETT engine and ATTESA E-TS drivetrain were carried forward through the R33 (1995) and R34 (1999–2002) generations, each refining the basic architecture while the R32 remained the purest expression of the Group A homologation intent.
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