Porsche 928

Porsche
Porsche 928 S4
928
Production period:	1977-1995
Class :	Sports car
Body versions :	Combi coupe
Engines:	Petrol engines : 4.5-5.4 liters (176-257 kW)
Length:	4520 mm
Width:	1890 mm
Height:	1282 mm
Wheelbase :	2500 mm
Empty weight :	1450-1640 kg

The Porsche 928 is a sports car that Porsche produced from 1977 to 1995. It is a Gran Turismo car with a V8 front engine and rear-wheel drive . The gearbox and differential are located in a common housing on the rear axle ( transaxle ).

The 928 was the top model from Porsche, which was to replace the Porsche 911 in the early 1980s .

General

In the early 1970s, Porsche began development work on a new model that was completely different from the Porsche 911 . Instead of an air-cooled engine in the rear, a water-cooled eight - cylinder front engine was provided. The gearbox was on the driven rear axle. This ensured a favorable axle load distribution and was also used on the Porsche 924 and later on the Porsche 944 and its successor, the Porsche 968 . The shape of the body was designed by Harm Lagaay and Wolfgang Möbius.

The 4.5 liter engine developed 176 kW (240 hp). It was a new development for which there was no role model in Porsche racing cars. The block and cylinder heads of the V-engine with a 90 degree cylinder bank angle were made of an aluminum-silicon alloy. The engine had no liners, the iron-coated pistons ran directly on the light metal cylinder running surface. The crank pins of the crankshaft were not in one plane ("crossplane"). A toothed belt drove an overhead camshaft per cylinder bank. The two parallel hanging valves were operated by bucket tappets, the combustion chambers were wedge-shaped. Later there were also four-valve engines with four overhead camshafts (928 S4). The two-disc clutch was on the engine, and the power was transmitted to the gearbox installed in front of the rear axle via a hingeless shaft rotating at engine speed. The engine and gearbox were connected by a rigid duct in which the shaft ran. This construction differed significantly from that of the contemporary Alfa Romeo transaxle models with Giubo clutches ( Hardy disks ) on the cardan shaft. The rigid coupling of engine and gearbox had the advantage that the shift linkage could be guided precisely on it and the entire drive train including the attached exhaust system formed a vibration-isolated unit that could be connected to the vehicle in a vibration-isolated manner, which improved the noise comfort. In the 928, the gearbox was in front of the rear axle and not under the trunk floor as in the 924 and its derivatives.

The wheels were individually suspended from double wishbones ; front with brake deflection compensation. The rear suspension had been redeveloped in the Porsche development center in Weissach . When the load changed in bends by releasing the accelerator or braking, the rear wheel went into toe-in to compensate for sudden oversteer (breakaway) and thus increase driving safety. This was essentially achieved through a precisely calculated flexibility on the front rubber mount of the front lower and rear arms. This axis was also known as the "Weissach axis". The name of the axis is not derived from the Weissach Development Center from but stands for W inkel ei nstellende, s ven s tabilisierende A usgleichs- Ch arakteristik. There was a similar, somewhat simpler construction in 1982 in the Mercedes-Benz W 201 ( five-link axle ).

The shape of the 928 differed from the previous Porsche models. Characteristic features of the car are the round pop-up headlights and the strongly rounded, collision-elastic rear section. The shape of the 928 was modern when it was introduced in 1977 and proved to be timeless throughout its construction period, so that the car was built almost unchanged until the end of production in 1995.

When the 928 was presented, the shape polarized: some observers praised the clarity of the lines, others felt they were “terrorist”. A special feature were the C-pillar drawn in at the rear and the curved rear side windows. In doing so, the Porsche designers took up an idea that Richard Teague had first realized in 1975 at the AMC Pacer . The design of the 928 was influential. In the following years it served as inspiration for different manufacturers for their own models. They included the Zagato Zeta 6 (1983) and the Rayton Fissore Gold Shadow .

Model development

928 (1977-1982)

The Porsche 928 with wheels in the " telephone dial design "

The Porsche 928 was presented in March 1977 at the Geneva Motor Show as “The great new sports car from Porsche”. The body was designed for lightweight construction in order to keep the weight of the car as low as possible despite the extensive equipment. The doors, fenders and the bonnet were made of aluminum . The 928 was significantly longer, wider and flatter than the 911 of that time. The bumpers were integrated into the body and consisted of a metal profile for shock absorption and a streamlined front and rear apron. The pop-up headlights were sunk back into the fenders in their rest position.

The eight-cylinder V-engine with a displacement of 4474 cm³ (4.5 liters) developed 176 kW (240 hp) at an engine speed of 5500 rpm. The only more powerful Porsche was the 911 Turbo, which at the time offered 191 kW (260 hp). A mechanical K-Jetronic from Bosch was used for fuel injection. The 928 could be ordered with a five-speed manual transmission or with a three-speed automatic transmission supplied by Mercedes-Benz. As standard, the car had 15 "or 16" light metal perforated disk wheels in a design that is sometimes referred to as the " telephone dial design".

The vehicle was more luxuriously equipped than other Porsches before, for example with a detergent dosing pump for the windscreen washer system or an air conditioning system available as an extra , which could cool the glove compartment as well as the interior .

Headlights on a Porsche 928 S4

The sports car, which was delivered from autumn 1977, won many awards for its advanced design and equipment when it was launched. The readers of the Stuttgart auto magazine mot voted it the most sensible sports car of the year and at the British Motor Show in Birmingham it was awarded a gold medal by the Institute of British Carriage and Automobile Manufacturers , which rated all sports cars in the disciplines of design, quality and comfort. In 1978 it was the first sports car ever to be voted European Car of the Year by an international jury of journalists .

The 1979 models hardly changed compared to the previous year's models, except that there was now an electrically operated sunroof, electrically adjustable seats and side ram protection strips painted in the vehicle color. The side indicators on the front fenders were new.

The exterior of the 928 remained unchanged in 1980, but its engine was changed from regular to premium gasoline. "Our goal is to provide evidence that you can achieve reasonable consumption values ​​even with a large-volume eight-cylinder engine," said Helmuth Bott , the Chief Technology Officer at the time, and emphasized the now higher compression ratio . This measure enabled fuel consumption to be reduced by around 25%.

The cockpit of the 928 and 928 S from 1981

According to the ideas of the then Porsche CEO Ernst Fuhrmann, the 928 was to replace the 911 at the beginning of the 1980s . This goal was not achieved, as the 928 could be considered a Gran Turismo in the original sense of the term rather than a classic sports car . It was bigger and heavier than the 911. Even if the 928 was technically very far ahead of its time when it was launched and the car may have been better in many respects, it could not prevail against the 911. With all the advantages that the 928 had to offer, most Porsche customers continued to swear by the 911, although (or perhaps because) it was much more difficult to control at the limit due to its pronounced tendency to oversteer compared to the comfort-oriented and balanced 928. The 928 therefore always played the role of a fast and comfortable touring car, while the 911 occupied the position of a pure sports car with racing characteristics. As a result of the unsuccessful model policy, Ernst Fuhrmann was replaced as CEO by Peter W. Schutz at the end of 1980.

In 1981 the interior of the vehicle was upgraded. This included, for example, a fuel consumption indicator, a cassette compartment and an additional shelf on the left under the dashboard. The 928 now also had the four-spoke steering wheel of the 928 S introduced a year earlier.

In 1982 the production of the Porsche 928 was stopped and only the 928 S continued to be produced.

928 S (1980-1986)

The Porsche 928 S.

For the 1980 model year, the 928 received a more powerful parallel model that was shown at the IAA in Frankfurt in September 1979 . The 928 S had a more powerful engine with a displacement of 4664 cm³ and a max. Delivered an output of 221 kW (300 PS). This increase in performance was achieved through the larger displacement and a higher compression ratio of 10: 1, which is why the car had to be refueled with premium fuel. With this engine, the vehicle reached a top speed of 250 km / h and accelerated from standstill to 100 km / h in 6.6 seconds. The trade journal Auto, Motor und Sport stated: “The big Porsche plays its trump cards on the autobahn”.

Distinguishing features were the newly designed light alloy wheels, small front and rear spoilers to improve the airflow and the now also electrically adjustable exterior mirrors on the passenger side.

The V8 engine of the Porsche 928 S.

The significant additional price compared to the normal 928 included air conditioning, among other things. The interior was upgraded again in 1981, among other things with electrically adjustable seats as standard.

From the 1982 model year, only the 928 S with the same engine was offered. To reduce engine noise and increase travel comfort, the engineers at Porsche used a new hydraulic engine mount to reduce engine vibrations, as well as hydraulic timing belt regulation and damping. The interior was slightly revised and the green-tinted all-round glazing was part of the standard equipment. To increase occupant safety, a windshield made of laminated safety glass was installed, in the middle of which a 0.5 millimeter thick polyurethane film was attached.

To underline the performance and reliability of the 928, in 1983 Porsche had a standard 928 S drive a total of 24 hours on the high-speed track in Nardò . This covered a distance of 6033 kilometers and thus reached an average speed of 251.4 km / h.

In 1984 the output of the 928 S was increased to 228 kW (310 hp) at 5900 rpm. The maximum torque increased from 385 to 400 Nm. The mechanical Bosch-K-Jetronic of the previous models was replaced by a Bosch-LH-Motronic - injection system with overrun cut-off and electronic map - transistor ignition , through which the fuel consumption could be further reduced.

The opened trunk of a Porsche 928 S.

The open bonnet of a Porsche 928

This car could be ordered with a five-speed manual transmission as well as with a new four-speed automatic transmission, which ensured a frictional connection almost like a mechanical clutch. As a result, similarly good acceleration values ​​could be achieved with the automatic transmission as with the manual transmission. The anti-lock braking system, available as an extra for a Porsche for the first time, offered useful support when braking in dangerous situations . The heated windshield washer nozzles provided a further gain in safety in winter.

The buyers of a Porsche 928 S from model year 1985 acquired a vehicle that had further improved driving comfort. For example, the seats offered more lateral guidance and an extended support for the thighs, as well as numerous electrical adjustment options. The belt buckles for the seat belts , which are now attached directly to the seat, were the best solution according to findings in accident research . The seat rails, which have been lowered by 15 millimeters, gave tall drivers more headroom. Another new feature was the radio antenna integrated into the windshield glass as a fine wire. Changes were also noticeable when changing gears. The five-speed gearbox with changed synchronization could be shifted faster and more precisely.

From 1986 the 928 S was delivered with ABS as standard . In addition, the car received a newly developed brake system with four-piston fixed calipers, which achieved even better braking performance. A quieter exhaust system made for more comfort on fast trips. These technical improvements underscored the promise made by Porsche CEO Schutz, who said: “What Porsche builds must be first class”.

In 1985, a five-liter engine with four-valve technology was introduced, with which the stricter emissions laws in the USA could be better complied with. From 1986, a vehicle with a regulated catalytic converter was also offered in Germany . The engine of this model was based on the version already introduced in the USA. However, since only unleaded regular gasoline was available nationwide in Europe, the compression ratio was reduced to 9.3: 1, so that the engine only developed 212 kW (288 hp).

At the end of 1986, production of the Porsche 928 S ended after six years of production, as a new model was planned for the following year.

928 S4 (1987-1991)

The Porsche 928 S4

In 1987, the Porsche 928 S4 was marketed as the successor to the 928 S. In the new model, the engine and body have been further improved. The engine delivered an output of 235 kW (320 hp) at 6000 rpm from a displacement of 4957 cm³. According to Paul Hensler , Head of Department responsible for drive development, the basis was the V8 engine with four-valve technology that was already used in the 928 S with catalytic converter. In contrast to this, the new engine was designed for unleaded premium gasoline and delivered the same performance with and without a catalytic converter. The 928 S4 could be ordered with either a five-speed manual or a four-speed automatic. However, the majority of customers preferred the variant with automatic transmission.

The V8 engine of the Porsche 928 S4

In addition, the shape of the vehicle has been changed to improve the drag coefficient (C _w ) to 0.34. This was achieved through a modified bow with new fog lights and additional lights, a modified front spoiler with openings for brake ventilation, a redesigned rear section with different lights and a modified spoiler, as well as underbody paneling. The cooling air control was also newly developed. The flaps, moved by servomotors, only allowed as much air to flow through the engine compartment as was needed to cool the units and for the air conditioning. This also contributed to the lower air resistance .

The 928 S4 achieved better performance than the previous models. It took the car just 5.9 s to accelerate from zero to 100 km / h. The maximum speed was 270 km / h and 265 km / h for vehicles with automatic transmissions.

In 1988 the 928 S4 had only minor changes, mainly to the interior. The standard equipment has been upgraded by an electronic cruise control and a loudspeaker sound package. Raff leather seat covers were available as additional extras, and the necessary preparations for installing a C-network telephone were made on request.

The interior of the Porsche 928 S4
(right-hand drive version)

"The 928 is a diamond that will shine even more when it is fine-tuned," were the words of Ulrich Bez , Porsche Development Director , who succeeded Helmuth Bott .

A year later, the 928 model range was expanded to include the sporty GT. The S4 thus assumed the role of a comfortable touring limousine. As a consequence, the 928 S4 was only available with the four-speed automatic. This has been revised so that when you stop you no longer shift down to first, but only to second gear.

Further innovations were the instrument cluster with an on-board computer and the electronic information and diagnosis system with a tire pressure monitoring system integrated as standard .

In order to improve traction and driving stability of the 928, an electronically controlled locking differential (Porsche locking differential, PSD) was installed from 1990, the locking effect of which ranged from zero to 100 percent. In the same year, the S4 received the twin-pipe exhaust system that was previously reserved for the GT.

An airbag system was offered for the Porsche 928 from model year 1991 . Initially subject to a surcharge, the airbags became standard equipment in the same model year.

In 1991 the production of the Porsche 928 S4 as well as the sporty variant 928 GT was stopped.

928 GT (1989-1991)

Porsche 928 GT, built in 1990

Porsche wanted to better serve customer requirements and from 1989 offered the 928 in two different versions. The Porsche 928 S4, which was introduced in 1987, was intended to appeal to comfort-conscious customers and remained almost unchanged. For the sporty and ambitious drivers, Porsche introduced the new 928 GT. The five-liter engine of this car developed 243 kW (330 hp) at 6200 rpm, this was achieved through modified camshafts, modified exhaust systems (center and rear silencers) and modified control unit tuning. The sports car was delivered exclusively with a five-speed manual transmission.

The outside of the Porsche 928 GT stood out with a 928 GT logo on the rear, a double tailpipe and the 8 (VA) and 9 (HA) inch wide 16 ”forged wheels (so-called“ Clubsport rims “) From the S4. From 1990 the club sport bikes were replaced by the cast wheels known as "Design 90" in the dimensions 7.5x16 (VA) and 9x16 (HA).

The GT got a similar sporty character as the Clubsport version available the year before. But the buyers did not have to do without the luxury accessories. In addition, you could choose between a sporty, tight or a comfortable shock absorber setting.

The magazine Auto, Motor und Sport characterized the GT model with the words: "A harmonious all-round sports car, which is also characterized by a high-quality body that can accommodate four people if necessary."

During its short production time, the 928 GT received all the technical improvements that were also implemented in the S4.

The factory specification for average consumption was 14.5 l / 100 km.

928 GTS (1992-1995)

The Porsche 928 GTS is the last version of this model series.

In the 1992 model year, the Porsche 928 GTS was introduced, which replaced the S4 and GT. The new car had a larger engine that developed an output of 257 kW (350 hp) at 5700 rpm from a displacement of 5397 cm³ (5.4 liters).

The chassis and the braking system have also been revised and further improved.

The GTS could be distinguished from its predecessors S4 and GT by the widened rear and the continuous strip of lights. The rear wing was now painted in the body color, the exterior mirrors had a new shape. The 17-inch light alloy wheels in the so-called CUP design were also part of the standard equipment. The 928 GTS was offered in this form and equipment almost unchanged until production was discontinued in 1995. The base price last cost more than 178,000 DM.

With the end of the 928, Porsche said goodbye to the classic Gran Turismo concept for several years . Only with the production of the Porsche Panamera does Porsche again offer a sports car that can be counted as part of it.

Special models

In addition to the series models, Porsche manufactured various special models or small series models.

50 years of Porsche (1981)

Interior fittings of the special model 50 years of Porsche using the example of a Porsche 911

At the end of 1981, on the occasion of the company's 50th anniversary, Porsche launched a special series of 140 Porsche 928 S in the meteor metallic color. These specimens had an elaborate interior made of wine-red leather and fabric, which was not offered in the standard models. The lettering F. Porsche was embroidered on the headrests .

600 Porsche 924s in tin metallic and 200 Porsche 911 SCs in meteor metallic were also offered with this option.

928 S4 Clubsport (1988)

The Porsche 928 S4 Clubsport

In 1988 Porsche released a sporty version of the 928 S4. This car had the designation 928 S4 Clubsport and was over 120 kg lighter than the production version. The weight reduction was achieved by doing without the PVC underbody protection, by using lighter wheels and by eliminating various comfort elements.

The slightly modified engine of the S4 developed 235 kW (320 hp). It had sharper camshafts and other control units for injection and ignition. The Clubsport was only delivered with the five-speed manual transmission. The vehicle thus particularly represented the ideas of the then CEO Heinz Branitzki of a sports car. He said: "A Porsche has to be light and fast and convey a lot of driving pleasure".

This statement was supported by measurements by the magazine Auto, Motor und Sport , which had been able to test a pre-series model the year before. "The reduction of 125 kg has an unmistakable effect on driving performance," was the verdict. In the test, according to measurements by the magazine, the vehicle accelerated from standstill to 100 km / h in 5.7 seconds and reached a maximum speed of 276 km / h.

Special bodies

Four-seater (Porsche 942)

Porsche 928 four-door from 1987

In 1984 Porsche planned a longer version of the 928 and commissioned the designer Anatole Lapine to design the internally called 928-4. Lapine extended the body shell of a 928 S by 250 mm to 4.77 meters. To make it easier to get into the rear seats, the B-pillar was placed vertically. As a result of these measures, the weight of the car increased by 75 kg to 1625 kg. The turning circle increased to 12.5 meters as a result of the extension. In addition, Porsche increased the rear track width by 25 mm to 1564 mm, while the front track width remained unchanged.

This car, also known as the Porsche 942 , was presented to Ferry Porsche on his 75th birthday on September 19, 1984. The vehicle already had the 228 kW (310 hp) engine. The front bumper already corresponded to the front section of the 928 S4 from 1987. The body was painted in a dark green metallic. The very extensive interior equipment included air conditioning, cruise control, an alarm system, a Blaupunkt stereo radio type Cologne, a window antenna and a telephone. However, the car remained a one-off. Because of the lower body rigidity compared to the standard model, Porsche decided not to build the model in series.

In May 1987, Porsche boss Peter W. Schutz awarded the convertible specialist American Specialty Cars (ASC) an order for a feasibility study of a four-seater 928. Based on the experience with the one-off from 1984, a model with a combi-like rear was created and another one on ASC's own initiative with hatchback. In contrast to the Ferry Porsche anniversary vehicle, both vehicles had additional rear doors that opened in opposite directions. However, it did not go into series production.

Today these vehicles can be seen as the ancestors of the Porsche Panamera introduced in 2009 .

Station wagon

Porsche 928 station wagon

The Hanover-based tuning company Artz developed in 1983 on the basis of a 928 two-door station wagon with the designation Porsche 928 S Break . The technology of the 928 remained unchanged; the body was provided with a horizontal roof, a steep C-pillar and wide rear side windows. According to the company owner Günter Artz, the body of the station wagon is aerodynamically more favorable than that of the coupé; this results in a higher top speed of 261 km / h. The conversion costs amounted to 30,000 DM.

Open versions

Porsche 928 GTS converted and widened to convertible

In the course of the 1980s, numerous workshops offered convertible versions of the 928, among them the tuning company bb Auto Exklusiv Service from Rainer Buchmann from Frankfurt am Main . Versions with a fabric top and Targa versions were created here .

Technical specifications

The Porsche 928 was produced from 1977 to 1995 in the following versions for the German market:

Porsche 928:	928	928 S (up to MY 1984)	928 S (from model year 1984)	928 S with KAT (from model year 1986)	928 S4	928 GT	928 GTS
Engine:	8-cylinder V-engine (four-stroke)
Displacement:	4474 cc	4664 cc		4957 cc			5397 cc
Bore × stroke:	95.0 x 78.9 mm	97.0 x 78.9 mm		100.0 x 78.9 mm			100.0 x 85.9 mm
Performance at 1 / min:	176 kW (240 hp) 5500	221 kW (300 hp) 5900	228 kW (310 hp) 5900	212 kW (288 hp) 5750	235 kW (320 PS) 6000	243 kW (330 hp) 6200	257 kW (350 hp) 5700
Max. Torque at 1 / min:	350 Nm 3600	385 Nm 4500	400 Nm 4100	410 Nm 2700	430 Nm 3000	430 Nm 4100	500 Nm 4250
Compression:	8.5: 1	10.0: 1	10.4: 1	9.3: 1	10.0: 1		10.4: 1
Valve control:	OHC , one overhead camshaft per cylinder row, drive via toothed belt			DOHC , two overhead camshafts per cylinder row, drive via toothed belt
Cooling:	Water cooling
Transmission:	all types with rear-wheel drive and 5-speed gearbox; 928 and 928 S a. W. with 3-speed automatic, from 1984 optional. 4-speed automatic on the 928 S; 928 S4 and 928 GTS optional. 4-speed automatic (from 1990 with electronically controlled limited- slip differential ) 928 S4 from 1989 only 4-speed automatic
Brakes:	Disc brakes (internally ventilated), from 1986 with ABS
Front suspension:	Independent suspension on double wishbones , stabilizer
Rear suspension:	Independent suspension on double wishbones, stabilizer, track-stabilizing lower wishbone bearings ("Weissach axis")
Front suspension:	Coil springs, hydraulic telescopic shock absorbers
Rear suspension:	Coil springs, hydraulic telescopic shock absorbers
Body:	self-supporting steel body
Track width v / h (mm):	1551/1530	1549/1521			1551/1546	1551/1615
Wheelbase :	2500 mm
Tires rim:	215/60 VR 15 on 7J × 15	225/50 ZR 16 on 7J × 16			VA: 225/50 VR 16 on 7J × 16 HA: 245/45 VR 16 on 8J × 16	FA: 225/50 ZR 16 on 8J × 16 RA: 245/45 ZR 16 on 9J × 16	FA : 225/45 ZR 17 on 7½J × 17 HA: 255/40 ZR 17 on 9J × 17
Dimensions L × W × H:	4447 × 1836 × 1313 mm	4447 × 1836 × 1282 mm			4520 × 1836 × 1282 mm		4520 × 1890 × 1282 mm
Empty weight :	1450 kg			1530 kg	1580 kg (automatic 1600 kg)	1580 kg	1620 kg
Top speed:	230 km / h	250 km / h	255 km / h	250 km / h	270 km / h (automatic 265 km / h)	275 km / h
Acceleration 0-100 km / h:	6.8 s	6.6 s	6.2 s	6.1 s (automatic 6.6 s)	5.9 s	5.8 s	5.7 s (automatic 5.9 s)

In addition to the production model of the 928 S4, a special model, the Porsche 928 S4 Clubsport (CS), with a revised engine (officially also 235 kW / 320 PS) and reduced weight was offered in 1988.

Graphical representation of the 928 development

Porsche 928 road vehicle history from 1977 to 1995
model	power	1970s										1980s										1990s
		0	1	2	3	4th	5	6th	7th	8th	9	0	1	2	3	4th	5	6th	7th	8th	9	0	1	2	3	4th	5	6th	7th	8th	9
928
928	176 kW / 240 PS
928 p	221 kW / 300 PS
	228 kW / 310 PS
928 S with CAT	212 kW / 288 PS
928 S4	235 kW / 320 PS
928 GT	243 kW / 330 PS
928 GTS	257 kW / 350 PS

Quantities

year	1977	1978	1979	1980	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
928 models in total	1290	4927	4706	4175	4087	4510	4200	4601	5356	4617	5403	3663	2919	3088	2037	995	811	622	403

Source: Werner Oswald, Deutsche Autos 1945–1990 . Motorbuch Verlag, Stuttgart 2001.

Price development on the used car market

The Porsche 928 is now a high-priced classic. The prices for vehicles in pristine condition on the German market rose by more than 50% between 2005 and 2010. While a Porsche 928 of the first series cost 14,000 euros in 2005, it was already 22,500 euros in 2010. Other sources quote a price of 19,000 euros for an early 928 in condition “2” (good, unrestored).

Motorsport

The Porsche 928 was hardly ever used in motorsport. The few races were limited to z. B. on some races within the sports car world championship in group B in 1983 and 1984 by private teams. The 928 was also used in both years in the 24-hour races of Le Mans , where it finished 22nd in 1984.
The cars used were based on the 928 S and were equipped with a modified engine and an additional oil cooler for racing. The braking system was more powerful and corresponded to that of the Porsche 917 . An aluminum roll cage was installed in the interior .

Trivia

In 1984, Porsche provided its former Porsche works drivers Jacky Ickx , Jochen Mass , Stefan Bellof and Derek Bell each with a 928 S with 228 kW (310 hp). With these cars they drove to their assignments in the endurance races. The vehicles had a special paint job in Grand Prix white with a Rothmans color stripe based on the model of the Porsche 956 C racing car.

In the Porsche scene, the 928 was and is not without controversy. Followers of the brand often prefer the 911 and don't see the 928 as a real Porsche.

MAKO-Automobile in Cologne used the engines of the 928 for modifications of the Ford Granada and the Capri . The engine and driving performance of these vehicles were far above those of the maximum series performance.

literature

• Jörg Austen: Porsche 928. The technical documentation of the transaxle eight-cylinder . Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-02368-7 .
• Jörg Austen: Porsche type compass. Passenger car since 1948 . Motorbuch Verlag, Stuttgart 2007, ISBN 978-3-613-02710-7 .
• Alf Cremers: Dynamics of the Third Dimension . Comparative test of Porsche 928, BMS 630 CSi and Ferrari 400 GT. In: Motor Klassik. Issue 12/2010, p. 12 ff.
• Marc Bongers: Porsche. Series vehicles and sports cars since 1948 . Motorbuch Verlag, Stuttgart 2004, ISBN 3-613-02388-1 .
• David Hemmings: Porsche 928. Practical guide to classic purchases . Heel Verlag, Königswinter 2005, ISBN 3-89880-499-2 .
• Stuart Gallaher: The fascination of Porsche. Parragon Books, Bath, ISBN 1-4054-8355-5 .
• Brian Long: Porsche 928 . Veloce Publishing, Dorchester 2009, UK, ISBN 978-1-903706-30-5 .
• Nicky Wright: Porsche - dream car made in Germany. Orbis Verlag, ISBN 3-572-09989-7 .
• Günther Zink: Oldtimer Catalog No. 19 . Heel Verlag, Königswinter 2005, ISBN 3-89880-391-0 .
• Günther Zink: Oldtimer Catalog No. 24 . Heel Verlag, Königswinter 2010, ISBN 978-3-86852-185-6 .

Web links

Commons : Porsche 928  - Collection of pictures, videos and audio files

• Porsche Club 928
• Fan page for the Porsche 928 (English)

Individual evidence

1. ↑ Autobild: 30 Years of the Porsche 928 - Be careful. From: www.autobild.de , June 26, 2007, accessed on November 17, 2015 . 
2. ↑ Karlsruhe Institute of Technology: Exercise for the lecture "Fundamentals of Vehicle Technology II" ( Memento from December 2, 2013 in the Internet Archive )
3. ↑ http://www.928suspension.com/images/Rear%20Suspension%20Exploded.jpg - Exploded view of the axis
4. ↑ Stuart Gallaher: Fascination Porsche. P. 96.
5. ^ Auto Catalog No. 21 (1977/78), p. 28.
6. ↑ See Motor Klassik, issue 12/2012, p. 13.
7. ^ Richard Langworth: Encyclopedia of American Cars 1930-1980 . P. 29.
8. ^ Richard Heseltine: Future Shock. In: Octane Classic & Performance Cars . Issue 4/2012, p. 82 ff.
9. ↑ Website: Images of stylistically related vehicles. From: www.leroux.andre.free.fr , accessed June 22, 2012 . 
10. ↑ ^{a b} Nicky Wright: Porsche - dream car made in Germany. P. 144.
11. ↑ Nicky Wright: Porsche - dream car made in Germany. P. 146.
12. ↑ Der Spiegel Magazin, Issue No. 9 from 1977, p. 178.
13. ^ Car picture: Jan-Henrik Muche: The big shock. From: www.autobild.de , August 16, 2010, accessed on May 6, 2012 . 
14. ↑ Achim Kubiak: Fascination 911 . Bielefeld: Delius Klasing 2004. ISBN 3-7688-1581-1 , p. 119 there.
15. ↑ Stuart Gallaher: Fascination Porsche. P. 97.
16. ↑ Porsche 928 ► Technical data for all engines. March 4, 2016, accessed July 31, 2020 . 
17. ↑ Cars , motors and sports: Porsche Panamera - four-door Gran Turismo in the driving report. (No longer available online.) At: www.auto-motor-und-sport.de , July 7, 2009, archived from the original on January 7, 2012 ; Retrieved July 2, 2012 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  
18. ↑ ^{a b} Auto, Motor und Sport Magazin, issue no.19 from 1984
19. ↑ Peter Vann, Dirk Maxeiner: The most beautiful cars in the world. Stuttgart (Motorbuch Verlag) 1984, ISBN 3-87943-964-8 . There p. 22 f.
20. ↑ Günther Zink: Oldtimer Catalog No. 19 (2005), p. 253 and No. 24 (2010), p. 302.
21. ↑ AutoBild Klassik, edition 7/2012, p. 126.
22. ↑ Classicscars - Internet site: Racing results of the sports car world championship 1983. At: www.classicscars.com , accessed on May 9, 2012 . 
23. ↑ Classicscars - Internet site: Racing results of the sports car world championship 1984. At: www.classicscars.com , accessed on May 9, 2012 . 
24. ↑ KKTT.de - Website: MAKO Granada. From: kktt.de , accessed on April 15, 2014 . 

This version was added to the list of articles worth reading on July 6, 2012 .