Nissan 300ZX 1983-2000
The Nissan 300ZX (called the Fairlady Z in Japan) is a sports car that was produced by Nissan. It comprises the third and fourth generations of the Z-car line-up, respectively given the chassis designations Z31 and Z32.
The 300ZX name followed the numerical convention initiated with the 240Z, put forth by Yutaka Katayama, the one time president of Nissan Motors USA. The "X" was added to the model name by its predecessor signifying "luxury". The name was used in most markets with the exception of a few including the Japanese home market, there the car like all previous Z cars was sold as a "Fairlady Z". The best selling 300ZX's were the Z31s, with over 100,000 more sales than the Z32.
The Z31 and Z32 feature a 3.0 litre, V6 naturally-aspirated and single (Z31) or twin (Z32) turbocharged engine. Although both motors are from the same VG series and have the same displacement, the power output of the Z32's VG30DE and VG30DETT engine is greater than the Z31. The VG30DE engine also has a double overhead cam and variable valve timing while the older VG30E is a single overhead cam design. The naturally-aspirated Z32 has 222 hp (166 kW) and 198 lb·ft (268 N·m) of torque versus the Z31 with 160-165 hp and 174 lb·ft (236 N·m) of torque. Similarly, the twin-turbo Z32s have 300 hp (220 kW) and 283 lb·ft (384 N·m) torque versus the single turbo Z31, which has 200-205 hp and 227 lb·ft (308 N·m) of torque. The Z32's twin turbo motor is also intercooled unlike the Z31 turbo. The Z31's single overhead cam engine has 13 head bolts per head, for a total of 26, where as the Z32's dual overhead cam engine only has 8 head bolts per head, for a total of 16.
The Z31 chassis was designed after the previous Z-car, the Nissan 280ZX, and had two special editions based on it. The 50th Anniversary Edition focused on luxury to celebrate the company's semi-centennial in 1984, while the Shiro Special, released 4 years later, boasted performance-oriented upgrades. Styling would be completely redesigned with the release of the Z32, tending towards a wider footprint and more rounded curves with an overall result that the Z32 turned in a drag coefficient of .31 compared to the early Z31's .30. The newer chassis also featured hydraulic rear wheel steering called Super HICAS (in 1994 changed to an electric actuator), in its top-of-the-line models. Although it was not a special edition, in 1996 Nissan designated the final 300 American units the Commemorative Edition. Production of the Z32 ceased outside of the home market and continued in Japan until August 2000.
True to its heritage, the race-only 300ZX cars had several notable victories, including the 1986 Trans Am series and the 1994 24 Hours of Daytona. However, auto sports politics and a controversial GTS-1 class win at the 24 Hours of LeMans that same year prompted the International Motor Sports Association to declare the twin turbo engine illegal for future competition. The 300ZX also holds the E/BMS land speed record of 419.84 km/h (260.87 mph) from the 1991 Bonneville Speed Trial.
Throughout its life, the 300ZX has been praised by critics. Car and Driver placed the car on its Ten Best list for 7 consecutive years and Motor Trend awarded it as the 1990 Import Car of the Year.
The 300ZX was replaced by the Nissan 350Z(Z33) in 2003.
Z31
The Z31 chassis designation was first introduced in 1983 as a 1984 Datsun/Nissan 300ZX (the hatch lid had both a Datsun badge and a Nissan badge). This continued until 1985 when Nissan standardized their brand name worldwide and dropped the Datsun badge. Designed by Kazumasu Takagi and his team of developers, the 300ZX improved aerodynamics and increased power when compared to its predecessor, the 280ZX. The newer Z-car had a drag coefficient of 0.30 and was powered by Japan's first mass-produced V6 engine instead of an I6. According to Nissan, "the V6 engine was supposed to re-create the spirit of the original Fairlady Z. From 1990 to 1996 there were only 10,000 made each year, winning one of the most reliable cars of all time.
This new V6 (2960 cc) Single overhead cam engine was available as a naturally-aspirated VG30E or a turbocharged VG30ET producing 160 hp (119 kW) and 200 hp (150 kW) respectively. The engine was either a type A or type B sub-designation from 1984 to April 1987, while models from May 1987 to 1989 had a W sub-designation. The W-series engines featured redesigned water jackets for additional cooling, fully floating piston wrist pins, and more power—165 hp naturally-aspirated and 205 hp (153 kW) turbocharged. The 1984 to 1987 turbo models featured a Garrett T3 turbocharger with a 7.8:1 compression ratio, whereas 1988 to 1989 models featured a low inertia T25 turbocharger with an increased 8.3:1 compression ratio. Finally, these engines were equipped with self-adjusting hydraulic valve lifters. The transmissions were a 5-speed manual or an optional 4-speed automatic (E4N71B for turbo models, L4N71B for naturally-aspirated models). The automatic transmission on the turbo models did not have a lockup mechanism. All Z31's were equipped with a Nissan R200 rear differential, later year turbo models received an R200 limited-slip differential. There were three trim models available: SF, GL and GLL. The SF model was only available in Canada.
Similar to Chrysler's Electronic Voice Alert, the 1984-1986 Z31 GL and GLL models featured a voice warning system.
Japanese market
The 200Z, 200ZG, and 200ZS used the VG20ET engine while the 200ZR came with the RB20DET. The 300ZX could come with either the VG30E or VG30ET. The only factory Z31 variant to use the VG30DE engine was the 300ZR.
European models
The European models made 230 hp (170 kW) in turbo form due to a better camshaft profile, also known outside of Europe as the Nismo camshafts. Some models were also equipped without catalytic converters. All European turbocharged models received a different front lower spoiler as well, with 84-86 models being unique and 87-89 production having the same spoiler as the USDM 1988 "SS" model.
Australian models
All Australian model z31 300zx's were 2+2 targa top body. The cars sold in 1984 and '85 were all naturally aspirated with no catalytic converter, while the turbocharged version was the only model available from 1986 to 1988. There was only one trim level in Australia, with the digital dashboard and climate control being an optional upgrade package, and leather seats only available in the redesigned series 3 "Californian" models. The Australian model Z31's factory specified power output has not been confirmed to this date. The turbo models are rumoured to make the same 230 hp (170 kW) as the European model z31's, but the presence of the more aggressive camshafts has not been confirmed. The Australian factory service manual provides camshaft measurements which do not match any of the known USDM or EDM camshaft profiles, the FSM states the exhaust valve has an open duration of 252 degrees, but the specified opening and closing angles add up to 258 degrees. All Australian magazine articles state the n/a models have 166 hp (124 kW), and the turbo models as 208 hp (155 kW). The Australian 50th Anniversary Edition was more basic than the US version, the 50th AE was a normal n/a 300zx with the digital dash package, a black interior, black velour seats and a 50th AE badge on the exterior. The exterior badge was fixed to the cars by dealerships, so the position of the badge is not the same on all models. There was no Shiro Special in Australia, and no models featured the adjustable shock absorbers.
Chassis
The Z31 chassis was based on the 280ZX, but improved upon it. Although the newer chassis had the same wheelbase and MacPherson strut/semi-trailing arm independent suspension, it handled and accelerated better than the 280ZX it replaced. Turbocharged models, except for the Shiro Special edition, had an additional innovation: 3-way electronically adjustable shock absorbers.
Special Z31 releases
A 1984 50th Anniversary Edition 300ZX.Nissan manufactured two special Z31 models. The 1984 300ZX 50th Anniversary Edition, released to celebrate Nissan's half-century, was a fully-loaded turbocharged model with a Silver/Black color scheme. All 50th Anniversary Edition came equipped with a digital dash including MPG and compass readouts, in-car electronic adjustable shocks, Bodysonic speakers in the seats, cruise and radio controls in the steering wheel, mirrored t-tops, embroidered leather seats, embroidered floor mats, sixteen-inch (406 mm) aluminum wheels, rear fender flares, different front fenders, and 50th AE logo badges on the body. The only option available to the 50th Anniversary Edition was the choice between an automatic or a 5-speed manual transmission. 5,148 AE models were produced for the US market. Notably, 1984 also marks the last year of turbochargers cooled entirely by oil. 1985 turbo models are equipped with coolant passages to ensure turbo longevity. In 1988, the turbocharged Shiro Special debuted with pearl white paint, stiffer springs and matched shocks, heavy-duty anti-sway bars, a unique front air dam, paint matched wheels, Recaro seats with matching door panels, painted bumperettes, white painted doorhandles and a viscous, limited-slip differential. No other options were available for the Shiro, meaning all Shiros were identical. It was the fastest car out of Japan, capable of 153 mph (246 km/h) speeds, as tested by Motor Trend with the electronic speed limiter disabled. A total of 1002 Shiro Special Z31s were produced for the US market between January and March 1988. The Shiro Special is the rarest Nissan made Special Edition Z.
Style and evolution
The Z31 body was slightly restyled in 1986 with the addition of side skirts, fender flares, and sixteen inch (406 mm) wheels (all directly from the 1984 50th Anniversary Edition with the exception of the fender flares). Many black plastic trim pieces were also painted to match the body color, and the hood scoop was removed to provide a sleeker look. The car was given a final makeover in 1987 that included more aerodynamic bumpers, fog lamps within the front air dam, and 9004 bulb-based headlamps that replaced the outdated sealed beam headlights. The 300ZX-titled reflector in the rear was updated to a narrow set of tail lights running the entire width of the car and an LED third brake light on top of the rear hatch. The Z31 continued selling until 1989, more than any other Z-Car at the time. Over 70,000 units were sold in 1985 alone.
Z32
The only thing that remained unchanged from the previous generation 300ZX was the displacement of the 3-liter engine, now with dual overhead camshafts(DOHC), variable valve timing(VVT) and producing a rated 222 hp (166 kW) and 198 lb·ft (268 N·m) in naturally aspirated form. The big news for enthusiasts, however, was the turbo variant, now upgraded with twin Garrett turbochargers and dual intercoolers. This was good for 300 hp (224 kW) along with 283 lb·ft (384 N·m) of torque. Performance varied from 0-60 times of 5.0-6.0 seconds depending on the source, and it had a governed top speed of 155 mph (249 km/h).
Upon its release, the new 300ZX became an instant hit, winning Motor Trend's "Import Car of the Year" in 1990 as well as "One of the Top Ten Performance Cars". Automobile Magazine honors the 300ZX/300ZX Turbo as its "Design of the Year" and adds it to their "All Stars" list. Road & Track names the 300ZX Turbo "One of the Ten Best Cars in the World", and Car and Driver adds it to their 10Best for the seven years in which it was in production in America. American Z-car sales reach the one million sales mark in the 1990 model year, making it the all-time best selling sports car.
Nissan utilized the Cray-II supercomputer to completely design the new 300ZX with a form of CAD software. This made the 300ZX one of the first production cars to be developed in a CAD program. In return, it featured a whole host of technological advancements. On the twin turbo models, four-wheel steering was available under the name Super HICAS (High Capacity Actively Controlled Steering). The twin turbochargers, intercoolers, and requisite plumbing left for a cramped engine bay; however, everything fit perfectly.
Like previous generations Nissan offered a 2+2 model with the Z32. In 1993, a convertible version was introduced for the first time in the Z-car's history, as a response to aftermarket conversions. All 300ZXs now featured T-tops as standard, yet there were some rare hardtops produced as well.
The 300ZX was doomed to the same fate of many Japanese sports cars of the time. The mid-'90s trend toward SUVs and the rising Yen:Dollar ratio were both influential in ending North American 300ZX sales in 1996 at over 80,000 units sold (production for other markets continued until 2000). In 1990 the 300ZX was priced at about $30,000, but in its final year this price had increased to around $50,000. This left many people questioning its value, and despite a final Commemorative Edition for the final 300 units shipped to America (complete with decals and certificates of authenticity), the Z-Car was on hiatus. In Japan, however, the 300ZX lived on for a few more years with a face-lift including a new fascia, tail lights, head lights, rear spoiler, and a few other minor changes.
Style and evolution
The Z32 chassis would likewise undergo several changes throughout its US production run between 1989 and 1996. Among the milestone safety additions are the inclusion of standard driver and passenger-side airbags and true pillar-mount seat belts. The Z32's extended model year sales in 1990 reached 39,290 units
References
http://en.wikipedia.org/wiki/Nissan_300ZX