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Description
Porsche 928 GT (1990 European version)
The Porsche 928 is a luxury grand tourer produced by Porsche AG of Germany from 1978 to 1995.
Originally intended to replace the company's iconic 911, the 928 combined the power, poise, and handling of a sports car with the refinement, comfort, and equipment of a luxury saloon. Porsche executives believed such a flagship would have wider appeal than the compact, quirky and sometimes difficult to drive 911.
The 928 has the…
Porsche 928 GT (1990 European version)
The Porsche 928 is a luxury grand tourer produced by Porsche AG of Germany from 1978 to 1995.
Originally intended to replace the company’s iconic 911, the 928 combined the power, poise, and handling of a sports car with the refinement, comfort, and equipment of a luxury saloon. Porsche executives believed such a flagship would have wider appeal than the compact, quirky and sometimes difficult to drive 911.
The 928 has the distinction of being the company’s first production V8 powered model and the only coupé powered by a front-mounted V8 engine.
The rear axle of the 928 was a completely new development. What made this double-wishbone suspension – also known as the Weissach axle – unique was its toe-in stabilising effect. This worked more or less as a passive rear-wheel steering and thus made a significant contribution to the active safety of the Gran Turismo.
Porsche’s design and development efforts paid off during the 1978 European Car of the Year, where the 928 won ahead of the BMW 7 Series, and the Ford Granada. The 928 is the only sports car so far to have won this competition, where the usual winners are mainstream hatchbacks and sedans/saloons from major European manufacturers. This is regarded as proof of how advanced the 928 was, compared to its contemporaries.
—— THIS MODEL ——
Porsche debuted the 928 GT in the late winter 1988/89 after dropping the slow-selling CS and SE. In terms of equipment, the GT had less equipment than a 928 S4 to keep the weight down somewhat. It had the ZF 40% limited-slip differential as standard, european 1989 CS and GT wheels had an RDK tire pressure monitoring system as standard, which was also optional for the same year S4.
The 928 GT, as featured here, was more sporting than its predecessor, the 928 S4. Thanks to various modifications, its 5-litre V8 generated up to 330ps. Although other 928 models were available in both automatic and manual, the GT was only produced in manual. It is also one of the rarest of all the 928 models with just 2,078 cars produced.
1990 Porsche 928 GT (man. 5) (model since mid-year 1990 for Europe ) car specifications
Make: Porsche
Model: 928 1977-1995
Submodel: 928 Coupe 1977-1995
EEC segmentation: S (sport cars)
Subsegment: S-C (sport coupes) – executive
Class: grand tourer
Body style: hatchback coupe
Doors: 3
Engine manufacturer: Porsche M28
Engine type: spark-ignition 4-stroke
Fuel type: gasoline (petrol)
Fuel system: gasoline indirect injection
Valves per cylinder: 4
Additional features: Bosch LH-Jetronic / DOHC, V-90deg
Charge system: naturally aspirated
Cylinders alignment: V8 5.0L
Displacement: 4957 cm3 / 303.3 cui
Horsepower net: 243 kW / 330 PS / 326 hp (ECE) / 6200 rpm
Torque net: 430 Nm / 317 ft-lb / 4100 rpm
Rev limit: 6780+-20 rpm (limit by interrupting the injection signal)
Idle rpm: 750-800
Curb weight (without a driver): 1580 kg / 3483 lbs
Weight distribution f/r (%): 50 / 50
Fuel Tank 86L
Traction: RWD (rear-wheel drive) ZF 40% limited-slip differential
Transmission type: manual
Number of gears: 5
Gear ratios (overall):
I 3.7645 (10.26)
II 2.5122 (6.85)
III 1.7900 (4.88)
IV 1.3541 (3.69)
V 1 (2.73)
R 3.3056
Final drive ratio std: 2.727 (adjusted to 2.827 to match real kmh/rpm ratio)
Standard tires: 225/50 ZR 16 (F); 245/45 ZR 16 (R)
Standard ABS
Front brakes: disc ventilated 304 mm / 11.97 in
Rear brakes: disc ventilated 299 mm / 11.77 in
Brake Distance:
100-0 kmh: 39.4m**** —— 40.5m tsa.
Lateral acceleration 0.86 g (8 m/s²)
Factory claim
Top speed: 275 km/h / 171 mph ——- 276 tsa
0-60 mph (sec): 5.6
0-100 km/h (sec): 5.8 ——–5.77 tsa
0-160 km/h (sec): 13.4 ——– 12.63 tsa
0-200 km/h (sec): 20.7 ——– 19.58 tsa
0- 1/4mile (sec): 14.1 ——- 13.95 tsa
0- 1km (sec): 25.2 ——— 24.98 tsa
Tested
Top speed: 276 km/h / 172 mph****
Accelerations:
0-60 mph (sec): 5.2**
0-100 km/h (sec): 6.0***
0-160 km/h (sec): 13.6****
0-200 km/h (sec): 21.4****
Drag times:
0- 1/4mile (sec): 13.7***
0- 1km (sec): 25.5****
* Christophorus (July 1989 official Porsche magazine)
**Car & Driver (July 1990)
***Auto Motor und Sport (22/1990)
****Auto Motor Sport Edititon “70 Jahre Porsche Edition”
Track lap
Mireval 1:45.51
Tsukuba 1:09.11 ——— 1:09.847 (AC tested)
Nordshleife 8’46″53 Bild magazine test ———- 8:46.385 (AC tested)
Download Link
Resources
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ABS
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Traction Control
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