1979–1980

Early reviews of the 280ZX were mixed. Some lamented the transformation the Z-car had made to a grand tourer, while others appreciated the improvements in refinement, comfort, and overall market appeal. The sales figures soon proved the Nissan designers right, with the 280ZX becoming a sales success.

In 1979 Datsun homologated a high-downforce "whale-tail" type spoiler for the Datsun 280ZX by producing 1,001 280ZX-R cars; this allowed for use of this aerodynamic aid in IMSA and SCCA racing.^[5] These cars also had distinctive body decals and ZX-R logos. These cars were identical to the other cars of this year with the exception of the spoiler and decal package. Successful IMSA racer Don Devendorf was involved in the development of the spoiler.^[6]

From 1980 onwards, the 280ZX was available with a T-bar roof (on both the two-seater and 2+2 body styles). The T-bar roof panels could be removed and stored in bags in the rear of the car.

In 1980, a limited edition "10th anniversary" car was released. Available in either black and gold or black and red two-tone paint, these cars came with leather seating, and other special trim features. A total of 3000 of these cars were built - - 2500 in black and gold, and 500 in the red and black.

Nissan L28ET engine in a Datsun 280ZX

1981

A turbocharged model, using the L28ET engine rated at 180 bhp (134 kW; 182 PS) at 5,600 rpm and 203 ft•lbs (275n•m) of torque at 2,800 rpm, was introduced to the US export market in 1981. At the same time the Japanese domestic market received L20ET (2 L turbo) in both manual and automatic transmissions. Nissan's concerns about the reliability of their own five-speed transmission when combined with the additional torque of the 2.8 L turbo engine, meant that no manual transmission was offered with the L28ET engine for the 1981 model year. Other export markets (Europe and Australia) continued to receive only the normally aspirated 2.8 L engine with manual or automatic transmission. This engine was considered too powerful to receive type approval by Japan's Ministry of Transportation, who would only allow turbochargers to be installed in sub 2 litre-engined cars, and it was therefore never sold in its homeland.^[7]

Datsun 280ZX Turbo

The turbocharged 280ZX used a single Garrett AiResearch TB03 turbocharger with an internal wastegate, and no intercooler. Nissan's design philosophy at the time led to boost being limited to 6.8 psi (0.47 bar), despite the lowered compression of the turbo engine (7.4:1 with dished, cast aluminum pistons). Additional changes over the naturally aspirated engine included a higher volume oil pump, an oil cooler on automatic models, and Nissan's Electronic Concentrated Control System (ECCS).

Series II (above) and Series I (below)

At the time of its release into the US market, the 280ZX turbo was the fastest Japanese import on the American market. The turbocharged 280ZX with a three-speed automatic delivered 0–60 mph (0–97 km/h) times of 7.4 seconds^[8] and a very respectable quarter mile time of 16.6 seconds, at a top speed of 130 mph (210 km/h).

One criticism of the early 280ZX was a reduction in spring rates, giving a softer ride and making the car rather difficult to drive hard through corners without transient oversteer, which was a feature of trailing-arm rear suspensions. The release of the turbocharged model in 1981 saw the introduction of a revised rear suspension, which Nissan continued to use in the 1982 and 1983 turbos, as well as the non-turbo from mid-1982 onward. Car and Driver had another complaint of the 280ZX turbo: in a 1981 comparison of several performance cars, they decided that while the acceleration was on par with other sports cars of the era, the braking system was prone to fading away completely before a lap could be completed on their test track.

1982–1983

Rear view of facelifted model

Nissan gave the 280ZX a facelift in 1982, with revised NACA ducting in the hood, new alloy wheels (fourteen inch six-spoke alloys for non-turbo models, and fifteen inch four-spoke alloys for turbo models), a revised B-pillar garnish, new pin-stripe style tail-lights, and rubber bumper over-riders replaced the earlier model's chrome and rubber items. The bumpers were now also body coloured and wrapped around further. Interior changes were minor but included new seat trim styling. The 1982 model also was the first to offer the popular voice warning system, which warned the driver when the headlights were left on after the vehicle was turned off, if the parking brake was on while the vehicle was in motion, and many others.

This facelifted model has since come to be called the "Series II" 280ZX.

Power steering became standard equipment with a new rack-and-pinion system, rather than recirculating ball. Changes were made to the rear suspension layout, which also meant the exhaust pipe now exited from the left, rather than right-hand side. The rear brake calipers and rotors were also changed and the drive shafts (half shafts) were upgraded from universal joints to constant velocity joints on certain models.

As in 1981 both turbo and naturally aspirated engines were offered, but non-turbo cars now used the uprated L20E for the Japanese market or the L28E for the export market, which on the 2.8 L version, due to increased compression, were rated at 145 hp (108 kW) rather than the earlier engine's 135 hp (101 kW). The naturally aspirated 1982 Datsun 280ZX boasted a 0-60 mph time of 9.1 seconds, 1.2 seconds slower than the Corvette of the same year. The 280ZX Turbo manual had a 0-60 mph time of 7.4 seconds while the automatic managed to turn out 7.1 seconds. That compares to the Aston Martin Volante, which had a 0-60 mph time of 8.9 seconds at almost seven times the cost and the Ferrari 308GTSi which had a 0-60 mph time of 7.9 seconds. The only US-market car in 1982 to beat the Turbo ZX' acceleration figures was the Porsche 911SC, which was considered by most to be an exotic car. This information can be referenced in the R&T Guide to Sports & GT Cars (1982).

The (US market only) 280ZX Turbo was offered with a manual transmission; this was a Borg-Warner T-5 five-speed model. This was one of the first Nissan and Japanese car in general which used a non-Japanese transmission; the T-5 was also used in the GM F-bodies and Ford Mustang in addition to numerous other American domestic vehicles. The T-5 was only available in 1982 and 1983 after which Nissan USA phased in the use of local automotive components - the 1981 Turbo had only been available with an automatic. Hitherto mainly sold in the US, in the second half of 1983 the 280ZXT Turbo also became available in Germany. It was the fastest, most expensive, and most powerful (with 200 PS or 147 kW) Japanese car offered to that point in Germany.

Spring rates and sway bars were revised, which largely addressed the handling nervousness of the early 280ZX Turbo, and reviews confirmed that the 1982 280ZX Turbo was the most sporting Z-car since the original 240Z of 1970.