Audi Quattro A1 group B (1983)
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Home » Rally Cars » Audi Quattro A1
12201-audi-quattro.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
Street version information here

Specifications

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Group/Class B/12 Homologation number: B 229 (07/01 ET)
Years active 1983 Homologation start: 1/1/1983
Engine
Type WR, straight 5cyl, 4 stroke, pertol engine located front longitudinal with 27.5o right inclination
Capacity 2144 cc WRC: x 1.4 = 3002 cc
Bore x Stroke (mm) 79.51 x 86.4
Compression ratio 6.3:1
Output power - torgue 320 - 340 HP / 6500 rpm 42.0 kgm (412 Nm) / 3500 rpm
Main bearings 6 of 54mm diameter connecting rod length between centers 136mm, big end bearing diameter 49mm
Materials block: aluminium alloy cylinderhead: aluminium alloy
Cams/valves 1 overhead camshaft (SOHC), belt driven 2 valves/cyl. - 10 valves total. 41.1mm inlet valve diameter, 35.2mm exhaust valve diameter. 0o angle between inlet valve axis and vertical, 0o angle between inlet valve axis and vertical
Aspiration KKK K27 turbocharger (nickel alloy turbine 76.2mm diameter, aluminium comperessor 82mm diameter) with air/air intercooler, Bosch multi point electronic fuel injection pressure: 0.8 - 1.9 bar
Ignition electronic, firing order 1-2-4-5-3
Cooling system watercooled
Lubrication system dry sump with 1 oil cooler 12 lt
Transmission
Type four wheel drive 5 speed manual gearbox
Gearbox ratios 1st: 3.600/1 (36/10)
2nd: 2.188/1 (35/16)
3rd: 1.360/1 (34/25)
4th: 0.967/1 (29/30)
5th: 0.778/1 (28/36)
R: 3.500/1 (42/12)
1st: 3.000/1 (27/9)
2nd: 2.000/1 (24/12)
3rd: 1.500/1 (27/18)
4th: 1.217/1 (28/23)
5th: 1.042/1 (25/24)
R: 3.500/1 (42/12)
Diffrential ratio front and rear, 4.375/1 (35/8), 4.571/1 (32/7), 4.625/1 (37/8) output from gearbox secondary axis to open or locked or limited slip center differential with two outputs, 1st to hypoid spiral bevel gear, open front differential homocentrically through secondary hollow shaft of gearbox, 2nd to hypoid spiral bevel gear, 75% limited slip rear differential
Clutch Fichtel & Sachs dry, single disk, 240mm diameter
Chassis-body
Type steel monocoque Typ 85 chassis version of VW B2 platform with roll-cage. Front steel subframe. 2 door coupe steel bodyshell with plastic bumpers
Front suspension mc pherson strut with lower wishbone, coil spring, telescopic gas shock absorber and antiroll bar
Rear suspension mc pherson strut with lower wishbone, 1 longitudinal radius arm, coil spring, telescopic gas shock absorber and antiroll bar
Steering system rack and pinion with hydraulic power assistance 2.5 turns lock to lock. 22.4/1
Brakes front ventilated disks 280mm diameter with 1 cast iron piston caliper, or 280/295/305mm diameter with 4 aluminium piston calipers. Rear solid disks 245mm diameter with 1 cast iron piston caliper, or 280/295/305mm diameter with 4 aluminium piston calipers dual circuit with servo, standard ratio split front to rear: 60%-40%
Dimensions
length: 4.404 m (173.4") width: 1.837 m (72.3") height: 1.346 m (53.0")
wheelbase: 2.524 m (99.4") front track: 1.465 m (57.7") rear track: 1.502 m (59.1")
Rims - tires speedline light alloy
snow or gravel: 6" - 8" x 15", tarmac: 10" x 15"
Kleber or Michelin
Weight 1120 - 1140 kg front-rear: 60% - 40%
Weight/power 3.5 kg/HP
Fuel tank 90 - 120 lt
Drag coefficient 0.43

Results in WRC

Statistics

1983 1984 1985 1986 Total
Works
Races /wins 4/2 4/2
Entries/finishes 11/8 11/8 (72.7%)
Others
Races +1 1 3 2 7
Entries/finishes 3/3 3/2 3/0 5/1 14/6 (42.9%)
Total WRC results
Races 5/2 1 3 2 11/2
Entries/finishes 14/11 3/2 3/0 5/1 25/14 (58.3%)
Total points 84 84
(7.636 per race)
(3.360 per entry)
Retirements Times
accident 2
engine 2
transmission 2
head gasket 1
alternator 1
lost wheel 1

Races

Works team: Audi Sport

Season
Entry Rally event
Driver
Codriver
Team M.C (SVE) POR KEN TdC GRE N.Z ARG FIN S.R (CdI) RAC
Hannu Mikkola
Arne Hertz
works 4th 1st 1st 2nd
Michèle Mouton
Fabrizia Pons
works acci dent 4th 2nd 3rd
Stig Blomqvist
Björn Cederberg
works 3rd trans miss ion
Vic Preston, Jr
John Lyall
works acci dent
Lasse Lampi
Pentti Kuukkala
3rd
Franz Wittmann
Peter Diekmann
Funkbe raterring Rally Team 7th 7th
Total points
()
84 15 25 23 17 4
Statistics
Works starts/finishes 11/8 3/2 2/2 3/2 3/2
Others starts/finishes 3/3 1/1 1/1 1/1

Works entry with Audi Quattro A2 since Tour de Corse


Article from Auto Express (Greece) 191, 6/1983

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4432052365_0431ef0793_z.jpg?zz=1 Source

Drawings

audiquattro_0071.jpg Source
aqa1hinten2.gif Source

KKK K27 turbocharger

k26-explode-legend.jpg Source

Transmission

audi-quattro-I_x.jpg Source
audi-quattro-I_xx.jpg Source
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