Audi Sport Quattro group B (1984)
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Home » Rally Cars » Audi Sport Quattro
2006FOS_1985AudiQuattroS1PikesPeak.jpg Source Development chain:
1981: Audi Quattro
1983: Audi Quattro A1
1983: Audi Quattro A2
1984: Audi Sport Quattro
1985: Audi Sport Quattro S1
1987: Audi Sport Quattro S2

In rallies: see video

Specifications

Group/Class B/12 Homologation number: B 264 (03/01 ET)
Years active 1984 - 1985 Homologation start: 1/5/1984
Engine
Type KW, straight 5cyl, 4 stroke, petrol engine located front longitudinal with 27.5o right inclination
Capacity 2110 cc WRC: x 1.4 = 2954 cc
Bore x Stroke (mm) 79.51 x 85.0
Compression ratio 7.5:1
Output power - torgue 450 HP / 7500 rpm 46.9 kgm (460 Nm) / 5500 rpm
Main bearings 6 of 54mm diameter connecting rod distance between centers 144mm, big end bearing diameter 50.6mm
Materials block: aluminium alloy cylinderhead: aluminium alloy
Cams/valves 2 overhead camshafts (DOHC), belt driven 4 valves/cyl. - 20 valves total. 32.1mm inlet valves diameter, 28.1mm exhaust valves diameter
Aspiration KKK K27 turbocharger (CrNiSi alloy turbine 76.2mm diameter, aluminium compressor 87mm diameter), air/air intercooler with water injection, Bosch LH-jetronic multipoint electronic fuel injection pressure:
Ignition electronic, firing order 1-2-4-5-3
Cooling system watercooled
Lubrication system dry sump with 1 oil cooler
Transmission
Type four wheel drive 5 speed or 6 speed power shifted or manual gearbox
Gearbox ratios 1st: 3.500/1 (28/8)
2nd: 2.083/1 (25/12)
3rd: 1.368/1 (26/19)
4th: 0.962/1 (25/26)
5th: 0.821/1 (23/28)
R: 3.500/1 (42/12)
1st: 3.111/1 (28/9)
2nd: 2.273/1 (25/11)
3rd: 1.706/1 (29/17)
4th: 1.318/1 (29/22)
5th: 1.125/1 (27/24)
R: 3.500/1 (42/12)
1st: 2.700/1 (27/10)
2nd: 2.083/1 (25/12)
3rd: 1.706/1 (29/17)
4th: 1.428/1 (30/21)
5th: 1.217/1 (28/23)
6th: 1.040/1 (26/25)
R: 3.455/1 (38/11)
Diffrential ratio front and rear: 3.875/1 (31/8), 4.571/1 (32/7), 4.857/1 (34/7), 5.286/1 (37/7), 5.857/1 (41/7).
1985+: 5.571/1 (39/7)
100% locked center differential with two outputs, 1st to hypoid spiral bevel gear, limited slip front differential homocentrically through secondary hollow shaft of gearbox, 2nd to hypoid spiral bevel gear, limited slip rear differential
Clutch dry, single disk
Chassis-body
Type steel monocoque Typ 85 chassis version of VW B2 platform shortened by 320mm with roll-cage. Front steel subframe. 2 door coupe steel/kevlar bodyshell with plastic front/rear bonnets and bumpers
Front suspension mc pherson strut with lower wishbone, coil spring, telescopic gas shock absorber and antiroll bar 19-22-25-28mm diameter
Rear suspension mc pherson strut with lower wishbone, 1 longitudinal radius arm, coil spring, telescopic gas shock absorber and antiroll bar 19-22-25-28mm diameter
Steering system rack and pinion with hydraulic power assistance 22.4/1
Brakes front/rear ventilated disks 280/295mm diameter with 4 aluminium piston calipers (Lockheed or Girling).
1985+: front ventilated disks 304/330mm diameter, rear ventilated disks 304mm diameter
dual circuit with servo
Dimensions
length: 4.160 m (163.8") width: 1.817 m (71.5") height: 1.340 m (52.8")
wheelbase: 2.224 m (87.6") front track: 1.520 m (59.8") rear track: 1.490 m (58.7")
Rims - tires front and rear 7" - 9" x 15" or 16" Michelin
Weight 1100 kg front-rear: 52% - 48%
Weight/power 2.45 kg/HP
Fuel tank 90 - 120 lt

Results in WRC

Statistics

1984 1985 1986 Total
Works
Races /wins 6/1 8 14/1
Entries/finishes 9/2 16/9 25/11 (44%)
Others
Races 2 2
Entries/finishes 2/1 2/1 (50%)
Total WRC results
Races 6/1 8 2 16/1
Entries/finishes 9/2 16/9 2/1 27/12 (44%)
Total points 17 71 8 96
(6.000 per race)
(3.555 per entry)

Races

Works team: Audi Sport

Season
Entry Rally event
Driver
Codriver
Team M.C (SVE)
Entry list
POR KEN TdC GRE N.Z ARG FIN S.R (CdI) RAC
Walter Röhrl
Christian Geistdörfer
works eng ine clutch acci dent
Hannu Mikkola
Arne Hertz
works steer ing
Stig Blomqvist
Ilkka Kivimäki
works eng ine 1st
Michèle Mouton
Fabrizia Pons
works eng ine acci dent 4th
Total points
()
17 10 7
Statistics
Works starts/finishes 9/2 1/0 2/0 2/0 2/0 1/1 1/1

01Audi_quattro_1983RACwinner-L.jpg Source
Audi Sport Quattro in RAC rally '84
3170697925_5cce170aa2_z.jpg Source
1985_Audi_Sport_Quattro_SWB_Turbo_Rally_Replica_Engine_1.jpg Source
audi-s10.jpg Source

Drawings

audi_sport-quattro-group-b-rally-car-1984-86_r1.jpg Source

Engine

audi-sport-quattro-005.jpg
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