Renn - 2003 C5 Audi Quattro RS6
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C5 Audi Quattro RS6
Mostly Stock w/Stealth Radar Detector
- Runner up in DubsAlongTheRockies 2010 (Other Audi)
C5 RS6 powertrain detail
the internal combustion engine is an all-aluminium alloy 4,172 cubic centimetres (254.6 cu in) twin-turbocharged ('biturbo'), twin double overhead camshaft (2xDOHC), 5 valve per cylinder version of Audi's 4.2 litre 90° V8 petrol engine (parts code prefix: 077, identification code: BCY), developed and manufactured in the Germany and UK by quattro GmbH and Cosworth Technology (now known as MAHLE Powertrain).
With the addition of the two turbochargers (one per cylinder bank), the motive power output of the V8 engine was increased to 331 kilowatts (450 PS; 444 bhp) at 5,700 to 6,400 rpm, and generated 560 newton metres (413 ft·lbf) of torque. The combination of the 4.2 litre V8, variable inlet valve timing, and twin turbochargers gave the RS6 an exceptionally wide power band, with peak torque available from 1,950 to 5,600 rpm.
Further detail of the engine includes fully sequential electronic multi-point fuel injection with intake manifold-sited fuel injectors, mapped direct ignition system with solid-state high voltage distribution using eight individual single-spark ignition coils and NGK longlife spark plugs, and three knock sensors. Engine management uses a Bosch Motronic ME 7.1.1 engine control unit, which controls all functions of the engine operation; including fuel delivery, ignition system, valve timing, emissions control systems, and torque reduction control - the latter operating in conjunction with the Bosch ESP 5.7 Electronic Stability Programme, as part of the "Anti Slip Regulation" (ASR) traction control system.
It has an electronically-controlled five-speed ZF 5HP24A tiptronic automatic transmission (parts code prefix: 01L, identification code: GAG) (gear ratios - 1st: 3.571, 2nd: 2.200, 3rd: 1.505, 4th: 1.000, 5th: 0.804), with lock-up torque converter in all forward gears. It has "hill detection" capability and the transmission control unit ECU incorporates "fuzzy logic" with its "Dynamic Shift Programme" (DSP), with the shift pattern adapting to suit individual driving styles. 'tiptronic' manual control can be achieved with either the floor mounted gear shift lever, or the steering wheel mounted 'paddles'. The RS6 was only available with Audi's Torsen-based quattro permanent four-wheel drive, utilising the Torsen T-2 dynamic 'automatic torque biasing' (ATB) centre differential (diff), a modified unit which was being used in the 6.0 litre W12-powered Audi D2 A8. The torque from the engine is first routed from the gearbox output shaft to the Torsen centre diff, and then automatically divided and apportioned between the front and rear axles.
The front and rear axle differentials (ratio: 3.197) are a conventional "open" type, but utilise an "Electronic Differential Lock" (EDL). EDL is an integrated additional function of the Bosch Electronic Stability Programme (ESP) system, and works by monitoring and comparing the individual roadwheel speeds across an axle, and braking an individual wheel which is sensed to have lost traction (spinning), thus transferring torque across the axle to the wheel/tyre which does have grip. "Anti-Slip Regulation" (ASR), more commonly known as traction control system completes the Bosch ESP-related driver aids.