Specifications – AUDI QUATTRO RALLY CAR MANUAL

Audi Quattro Group 4 Audi Quattro A1 Audi Quattro A2 Audi Sport quattro Audi Sport quattro S1 Audi Sport quattro S1 Pikes Peak
Years active 1980-82 1983-86 1983-86 1984-87 1985-88 1987
Class Group 4/Group B Group B CpB Group B Group B Open Rally
Floorpan Volkswagen B2 Volkswagen B2 Volkswagen B2 Bespoke Bespoke Bespoke
Construction Steel unitary body Typ 85 with integrated roll cage, internal chassis rails and front/rear subframe Steel unitary body Typ 85 with integrated roll cage, Kevlar and carbon fibre panels, internal chas rails and front/rear subframe Steel unitary body with integrated titanium roll cage, Kevlar and carbon fibre panels, internal chassis rails and front/ rear subframe Steel unitary body with integrated titanium roll cage, Kevlar and carbon fibre panels, internal chassis rails and front/ rear subframe Spaceframe with integrated titanium roll cage, Kevlar and carbon fibre body, internal chassis rails and front/rear subframe
Homologation date 01/01/1980 01/01/1983 1983 01/05/1984 01/07/1985 N/A
Homologation no. 671 B229 B264 B264 N/A
Engine layout Longitudinal ahead of front axle, mounted 27.5 degrees from vertical Longitudinal ahead of front axle, mounted 27.5 degrees from vertical Longitudinal ahead of front axle, mounted 27.5 degrees from vertical Longitudinal ahead of front axle, mounted 27.5 degrees from vertical Longitudinal ahead of front axle Longitudinal ahead of front axle
Number of cylinders 5, single belt-driven overhead camshaft 5, single belt-driven overhead camshaft 5, single belt-driven overhead camshaft 5, twin belt-driven overhead camshafts 5, twin belt-driven overhead camshafts 5, twin belt-driven overhead camshafts
Engine construction Iron block Aluminium block with GG cast im cylinder liners Aluminium block with GG cast im cylinder liners Aluminium block with GG cast iron cylinder liners Aluminium block with GG cast iron cylinder liners Aluminium block with GG cast iron cylinder liners
Cylinder head Reverse flow cast aluminium alloy with hemispherical combustion chambers and vertical valves Reverse flow cast aluminium allo, with hemispherical combustion chambers and vertical valves Reverse flow cast aluminium allo, with hemispherical combustion chambers and vertical valves Cross flow cast aluminium alloy with hemispherical combustion chambers Cross flow cast aluminium alloy with hemispherical combustion chambers Cross flow cast aluminium alloy with hemispherical combustion chambers
Number of valves 10 (inlet 38.2mm/outlet 33.3mm) 10 (inlet 41.1 mm/outlet 35.2mmj 10 (inlet 41.1 mm/outlet 35.2mmj 20 (inlet 32.2mm/outlet 28.2mm) 20 (inlet 32.2mm/outlet 28.2mm) 20 (inlet 32.2mm/outlet 28.2mm)
Bore x stroke 79.5 x 86.4 79.5 x 86.4 79.5 x 86.4 79.5 x 85 79.5 x 85 79.5 x 85
Cubic capacity 2,144 cc 2,144 cc 2,121 or 2,135 cc 2,110 cc 2,121 cc 2,121 cc
FIA capacity (x 1.4) 3,003 cc 3,003 cc 2,969 or 2,989 cc 2,954 cc 2,969 cc N/A
Compression ratio 6:3:1 6:3:1 7:5:1 7:5:1 8:6:1
Ignition Bosch Bosch Bosch electronic Bosch electronic Bosch electronic
Firing order 1-2-4-5-3 1-2-4-5-3 1-2-4-5-3 1-2-4-5-3 1-2-4-5-3 1-2-4-5-3
Max. power/rpm 340bhp / 5,500rpm 360bhp / 6,500rpm / 6,500rpm 510bhp / 7,500rpm 550bhp 1 7,500rpm 750bhp / 8,000rpm
Max. torque/rpm 412Nm / 3,500rpm 412Nm / 3,500rpm / 3,400rpm 460Nm / 4,500rpm 550Nm / 5,500rpm 590Nm / 5,500rpm
Fuel injection Pierburg Pierburg Pierburg/Bosch Bosch Bosch Bosch
Engine management Hitachi Hitachi Hitachi/Bosch Bosch Bosch Bosch
Turbocharger KKK K26 with intercooler KKK K26 with intercooler KKK K27 with intercooler KKK K27 with intercooler KKK K28 with intercooler KKK K28 with intercooler
Turbo pressure 1.5-1.8 bar 0.8-1.9 bar 0.8-1.9 bar 1.7-2.0 bar 1.9-2.2 bar 3.0 bar
Wastegate Audi Audi Porsche-derived ‘Umluft’ Porsche-derived ‘Umluft’ Porsche-derived ‘Umluft’
Cooling system Jacketed water-cooled with pump, radiator, fan and thermostat Jacketed water-cooled with pur, radiator, fan and thermostat Jacketed water-cooled with pur, radiator, fan and thermostat Jacketed water-cooled with pump, radiator, fan and < thermostat Jacketed water-cooled with rear-mounted pump, radiator, fan and thermostat Jacketed water-cooled with rear-mounted pump, radiator, fan and thermostat
Lubrication system Dry sump with rear-mounted 12-litre tank and external oil cooler Dry sump with rear-mounted 12-litre tank and external oil cooler Dry sump with rear-mounted 12-litre tank and external oil cooler Dry sump with rear-mounted catch tank and external oil cooler Dry sump with rear-mounted 12-litre tank and oil cooler Dry sump with rear-mounted catch tank and oil cooler
Transmission Permanent 4WD Permanent 4WD with centre differential Permanent 4WD with centre differential Permanent 4WD with centre differential Permanent 4WD with Torsen Gleason or Ferguson centre differential Permanent 4WD with Torsen Gleason centre differential
Front/rear split 50/50 50/50 50/50 Variable Variable
Gearbox 5-speed manual 5-speed manual speed manual 6-speed manual 6-speed manual/Porsche PDK semi-auto 6-speed manual
Clutch Fichtel & Sachs dry single-plate 240mm Fichtel & Sachs dry single-plate 240mm Fichtel & Sachs dry single-plate 240mm Fichtel & Sachs dry single-plate 240mm Fichtel & Sachs or Porsche/AP twin plate Fichtel & Sachs twin plate
Suspension MacPherson with front and rear anti-roll bar MacPherson with front and rear anti-roll bar MacPherson with front and rear radius arms and anti-roll bar MacPherson with front and rear radius arms and anti-roll bar (19-28mm diameter) MacPherson with front and rear radius arms and anti-roll bar (19-28mm diameter) MacPherson with front and rear radius arms and anti-roll bar (19-28mm diameter)
Dampers Boge coil spring, telescopic gas shock Boge coil spring, telescopic gas shock Boge coil spring, telescopic gas shock Boge coil spring, telescopic gas shock Boge coil spring, telescopic gas shock Boge coil spring, telescopic gas shock
Brakes Dual circuit with vacuum servo, standard ratio split front to rear: 60-40% Dual circuit with vacuum servo, standard ratio split front to rear 60-40% Dual circuit with vacuum servo, standard ratio split front to rear 60-40% Dual circuit with vacuum servo, variable ratio split front to rear Dual circuit with vacuum servo, variable ratio split front to rear Dual circuit with vacuum servo, variable ratio split front to rear
Brake discs Gravel/snow: AP front ventilated discs 280mm diameter with 1 piston calliper 54mm diameter, rear solid discs 245mm diameter with 1 piston calliper 36mm diameter. Asphalt: AP four piston calipers 42.5mm diameter Gravel/snow: AP front ventilate discs 280mm diameter with 1 a iron piston calliper 54mm diama rear solid discs 245mm diamera with 1 cast iron piston calliper 36mm diameter. Asphalt: AP front 280/295/305 diameter with four aluminium pt calipers 42.5mm diameter, rear 280/295/305mm diameter with! aluminium piston calipers 42.5m diameter Gravel/snow: AP front ventilate discs 280mm diameter with 1 a iron piston calliper 54mm diama rear solid discs 245mm diamera with 1 cast iron piston calliper 36mm diameter. Asphalt: AP front 280/295/305 diameter with four aluminium pt calipers 42.5mm diameter, rear 280/295/305mm diameter with! aluminium piston calipers 42.5m diameter Gravel/snow: Lockheed or Girling front ventilated discs 295mm diameter with 4 aluminium piston calipers 41.3mm diameter, rear ventilated discs 295mm diameter with 4 aluminium piston calipers 41.3mm diameter. Asphalt: Lockheed or Girling ventilated discs all around 280/304/330mm diameter with 4 aluminium piston calipers 42.5/43mm diameter. 1985: front ventilated discs with water cooling 330mm diameter with 2 x 2-piston calipers 2×44.4 + 2×40.7mm diameter, rear ventilated discs 280mm diameter with 4 aluminium piston calipers 31/33.9/34.9mm diameter. Gravel/snow: Lockheed or Girling front ventilated discs 295mm diameter with 4 aluminium piston calipers 41,3mm diameter, rear ventilated discs 295mm diameter with 4 aluminium piston calipers 41,3mm diameter. Asphalt: front ventilated discs with water cooling 330mm diameter with 2 x 2-piston calipers 2×44.4 + 2×40.7mm diameter, rear ventilated discs 280mm diameter with 4 aluminium piston calipers 31/33.9/34.9mm diameter. Lockheed or Girling front ventilated discs 295mm diameter with 4 aluminium piston calipers 41.3mm diameter, rear ventilated discs 295mm diameter with 4 aluminium piston calipers 41,3mm diameter.
Steering Rack and pinion with hydraulic servo assistance Rack and pinion with hydraulic servo assistance Rack and pinion with hydraulic servo assistance Rack and pinion with hydraulic servo assistance Rack and pinion with hydraulic servo assistance Rack and pinion with hydraulic servo assistance
Wheels 6j X 16 (snow) 7j x 16 (gravel) 10j x 16 (asphalt) 6j X 16 (snow) 7-9j x 16 (gravel) 10j x 16 (asphalt) 6j X 16 (snow) 7-9j x 16 (gravel) 10j x 16 (asphalt) 10j x 15 (asphalt) 6j x 16 (snow) 7j-8j x 16 (gravel) 9j-10j x 16 (asphalt) 10j x 15 (asphalt) 6j x 16 (snow) 7j-8j x 16 (gravel) 9j- x 16 (asphalt) 8j x 16
Tyres Kleber Timi (snow tyres) Pirelli (UK, Italy) Michelin (Sweden) Kleber Timi (snow tyres) Pirelli (UK, Italy) Michelin (Sweden) Michelin Pirelli (UK) Michelin Pirelli (UK) Michelin Pirelli (Ulster Rally) Michelin
Length 4,404mm 4,404mm 4,404mm 4,160mm 4,240mm 4,240mm
Width 1,733mm 1,837mm 1,837mm 1,817mm 1,860mm 1,860mm
Wheelbase 2,524mm 2,524mm 2,524mm 2,204mm 2,224mm 2,224mm
Track Front: 1,465mm Rear: 1,502mm Front: 1,465mm Rear: 1,502mm Front: 1,465mm Rear: 1,502mm Front: 1,490mm Rear: 1,520mm Front: 1,490mm Rear: 1,520mm Front: 1,490mm Rear: 1,520mm
Weight 1,150kg 1,120kg 1,000kg 1,220kg 1,100kg 950kg
Weight distribution 60/40 60/40 60/40 63/37 58/52 50/50
Fuel capacity 90-120 litres 90-200 litres 90-200 litres 30-200 litres 30-120 litres 30 litres
WRC starts/finishes (average) 82/40 (48.8%) 25/14 (58.3%) 55.9%) 27/12 (44%) 9/4 (44.4%) N/A
WRC points scored 194 84 96 34 N/A

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