ⓘ Audi V8
The Audi V8 is a four-door, full-size luxury sedan, built by Audi in Germany from 1988 to 1993, as the companys flagship model. It was the first car from Audi to use a V8 engine, and also the first Audi to combine a quattro system with an automatic transmission. Early cars used 3.6-litre V8s, while later cars featured a 4.2-litre version of the engine. The Audi V8 was replaced by the Audi A8 in 1994, although the A8 was not sold in North America until 1996.
The competition model of the Audi V8 won back-to-back Deutsche Tourenwagen Meisterschaft drivers titles in 1990 and 1991, with the championship winners being Hans-Joachim Stuck and Frank Biela respectively. Audi was the first company to win back-to-back DTM titles.
Standard features for the Audi V8 included a 32-valve, double overhead camshaft DOHC V8 engine and a four-speed electronically controlled ZF 4HP24A automatic transmission providing Audis quattro permanent four-wheel drive system. A five-speed later in production six-speed manual transmission was also available.
The Audi V8 had a galvanized steel body, with a 10-year anti-perforation warranty against corrosion. The Audi V8 was specifically designed to be a top of the range flagship car and included a number of luxury features as standard equipment, including leather seating and Audis quattro all wheel drive system see standard features list. The Audi V8 created a new elevated image for the company, providing a viable alternative to established competitors such as Mercedes-Benz. In this regard, the car was a cornerstone in developing the history of the Audi marque as it is today.
Factory production commenced in October 1988, and ceased in November 1993, although sales of completed vehicles continued in 1994. It was replaced by the Audi A8 in 1994.
2. Body style
The styling of the Audi V8 resembled the Typ 44 Audi 100 and 200 models, and was based on a stretched version of the Volkswagen Group C3 automobile platform, known either as the D1 or D11 platform. The Audi V8 differed from the Audi 100/200 with a unique grille attached to the hood, new bumpers and headlights, all-red tail lamps, extended wheelbase, wider track, pronounced fenders, and a completely different interior. Furthermore, only alloy wheels were offered, ranging from 15 to 17 inches.
In addition to the standard-length model, there was also a long wheelbase LWB, Lang in German version of the V8 refer to the infobox for differences in dimensions. It was assembled at Steyr-Daimler-Puch factory in Graz see production figures. This tradition would continue with the A8, offered in "A8L" format though only in year 2010 A8L reached the size of the V8L.
A once-off experimental Avant estate version was built for the wife of former Audi CEO Ferdinand Piech. This car is no longer on display at the Audi Forum Ingolstad, but in storage in Neckarsulm.
Powertrain detail of the Audi V8 featured one of two all-new, all-aluminium alloy engines – both petrol engines, and both in V8 configuration with 32 valves four valves per cylinder with dual valve springs, and four overhead camshafts DOHC. The design set the pattern for future Audi-developed Volkswagen Group V8 engines. In addition to using an all-aluminum alloy cylinder block when the established material was grey cast iron, the camshafts were driven using a hybrid method. A rubber/kevlar toothed timing belt, driven from the front of the crankshaft operated only the exhaust camshaft in each bank. The inlet camshafts were then operated via a simplex roller chain from the exhaust camshaft – the right bank, cylinders 1–4 at the rear of the engine, and the left bank cylinders 5–8 at the front of the engine, immediately behind the timing belt. This method reduced the complexity of the timing belt layout, and as a result, required fewer components, such as idler rollers and guides, and led to easier and less costly maintenance of the timing belt and associated components. The intervals for changing the timing belts varied; the 3.6 V8 PT required changing every 90.000 kilometres 60.000 mi, whereas the 4.2 V8 ABH had a longer interval at 120.000 kilometres 75.000 mi. A thermostatically controlled electric cooling fan also became standard, replacing the engine-driven viscous fans on earlier cars. This not only provided forced airflow for the engine coolant radiator, but also for the smaller engine oil cooler.
Audis trademark quattro permanent or semi-permanent, dependent on gearbox type four-wheel drive system was the only offering for the drivetrain. This normally distributes the engine torque as a default 50:50 between front and rear axles, but can automatically dynamically apportion up to a bias of 20:80 to 80:20 front and rear. The automatic transmission utilizes a hydraulically controlled multi-plate clutch to apportion drive between front and rear axles, whereas the manual transmission variants utilize a Torsen type 1 Torque Sensing center differential. The rear axle final drive unit contains a Torsen type 1 Torque Sensing differential, instead of the more common hypoid open differential.
3.1. Powertrain Engines
Both available engines used a Bosch Motronic fully electronic engine control unit ECU, with cylinder bank selective knock control, dual-barrel throttle valve, lambda mixture control via intake air volume metering and exhaust gas temperature sensor, and required unleaded petrol. Fuel was delivered to the combustion chambers via eight intake manifold-sited electronic fuel injectors, fed from two common fuel rails one per cylinder bank, and were sequentially fired or activated in accordance with the engines firing order. Whilst the 3.6 V8 was able to use 95 RON 91 AKI fuel, for the 4.2 V8, the more expensive 98 RON 93 AKI SuperPlus unleaded was required in order to achieve the quoted power output. The usage of 95 RON in the 4.2 V8 resulted in a lower power output, as well as increased fuel consumption.
At the initial launch of the Audi V8, the only offering was the 3.6-litre powerplant, which displaced 3.562 cubic centimetres 217.4 cu in. This V8 engine was DIN-rated with a maximum motive power output of 184 kilowatts 250 PS; 247 bhp at 5.800 revolutions per minute rpm, and generated a torque turning force of 340 newton metres 251 lbf⋅ft at 4.000 rpm. In August 1991, Audi introduced a 4.2-litre engine, displacing 4.172 cubic centimetres 254.6 cu in, to complement the choice of the existing 3.6-litre V8. This shared many components from the 3.6 V8, and the 4.2 unit was identical to the optional V8 used in the Audi S4 aka Ur-S4, sharing the same rated outputs and ABH identification code. Like the 3.6 V8 model, the existing four-speed automatic gearbox remained available. However, a new six-speed manual gearbox replaced the five-speed manual. This powerplant is identified by chrome V8 badges on the front grille and at trunk lid, where in some cars also 4.2 quattro badge is present.
3.2. Powertrain Transmissions
A choice of transmissions were offered. A ZF Friedrichshafen-sourced four-speed 4HP24A automatic transmission with a torque converter was available throughout the V8 production run. Automatic transmission has three modes: "S" – Sport; "E" – Economic and "M" – Manual operation. Sport mode is changing gears at higher rpm than Economic; Manual mode allows driver to choose gears using the lever. There were also two manual transmission offerings – for the 3.6: a five-speed manual gearbox, or later for the 4.2, a six-speed manual. Both manual transmission variants used a 240-millimetre 9.4 in single-plate clutch.
4. Steering, brakes, wheels
The Audi V8 came equipped with rack and pinion power assisted steering PAS as standard. An electronically controlled variable assisted servotronic version was also available. It was fitted with a high-performance brake system, which included radially ventilated disc brakes front and rear. The fronts were rather unusual – designed by Continental AG and sized at 310 millimetres 12.2 in diameter by 25 millimetres 0.98 in thick, but the caliper was mounted inside the disc. The fronts also incorporated electronic brake pad wear sensors. The rears were 269 millimetres 10.6 in by 20 millimetres 0.79 in, and incorporated a cable-operated parking brake. A Bosch anti-lock braking system ABS was also standard.
Standard wheels were 7.5J x 15 H2 ET35 aero style light alloy wheels shod with 215/60 R15 steel-belted radial tyres. Optional multi-spoke BBS-sourced with Audi centre-cap badge alloy wheels were also available, in either 8.0J x 16, or 8.0J x 17 sizes.
The Audi V8 came standard with a range of features, including a BOSE audio system with eight speakers, walnut wood trim, leather interior, and heated seats. The only paint finishes available were pearlescent or metallic. Some available colors included pearl white, lago blue teal, blue mica, tornado red, black, amongst others. The lists below details other standard and optional features.
Optional features that were offered with the Audi V8.
Audi developed a Group A competition version of the Audi V8 for entry into the Deutsche Tourenwagen Meisterschaft DTM German Touring Car Championship auto racing series equipped with 309 kW 420 PS; 414 bhp, later 340 kW 462 PS; 456 bhp, 3.6 V8 engine and 6-speed manual transmission, and began racing with it in 1990 with Schmidt MotorSport SMS running the operation, and Hans-Joachim Stuck, Walter Rohrl and Frank Jelinski driving. In the 1990 DTM season all of the three teams claimed together the entire podium 1st, 2nd and 3rd places at Hockenheimring race. Stuck won the title, and the following year, Audi added a second team to the mix, Audi Zentrum Reutlingen AZR. SMS continued with Stuck and Jelinski, while AZR raced with Frank Biela and Hubert Haupt. Biela gave Audi another crown in 1991, but was unable to defend the title in 1992.
For the 1992 season, Audi had changed their engines to use a 180° flatplane crankshaft, which they said had been re-forged and bent from the original 90° crossplane part as used in production model. The DTM organisers found this highly modified crankshaft deviated from original homologated standard crankshaft, and therefore deemed it illegal. Audi subsequently withdrew from the championship.
During its presence at DTM the Audi V8 competed with much smaller and about 300 kg 661 lb lighter Mercedes 190, BMW M3, and slightly smaller Opel Omega 3000. None of those cars were equipped with V8 engines or 4-wheel drive.
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