Audi Coupe B2 Quattro (Type 85) group A (1986)
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Home » Rally Cars » Audi Coupe B2 Quattro
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1986: Audi Coupe B2 Quattro
1993: Audi Coupe B3 S2

Specifications.

Audi 90 B2 Quattro, KV engine 2226cc
Homologation number: A5276
Homologation start: 1/7/1985
Homologation end: 31/12/1992

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Group/Class A/8 Homologation number: A5284
Years active 1986 - 1989 Homologation start: 1/1/1986
Homologation end: 31/12/1992
Engine
Type KV, straight 5 cyl, 4 stroke, petrol engine located front longitudinal with 27.5o right inclination (to co drivers side-LHD)
Capacity 2226 cc WRC: 2226 cc
Bore x Stroke (mm) 81.0 x 86.4
Compression ratio 10.0 - 12.0:1
Output power - torgue 200 - 210 HP / 7000 rpm 23.4 kgm (230 Nm) / 5500 rpm
Main bearings forged steel crankshaft with 6 main bearings 58mm diameter, big end journals diameter 47.8mm connecting rod length between centers 144mm, big end bearing diameter 50.6mm, aluminium alloy piston with 33.3mm compression height
Materials block: cast iron, 277.8mm height, 88mm bore spacing, 220mm deck height cylinderhead: reverse flow aluminium alloy with box shaped combustion chambers, 132.7mm height
Cams/valves single overhead camshaft (SOHC), belt driven 2 valves/cyl. - 10 valves total. 38.2mm inlet valve diameter, 33.3mm exhaust valve diameter. 0o angle between inlet/exhaust valves axis and vertical. 2 coil springs per valve
Aspiration natural, Bosch K-jetronic multipoint mechanical fuel injection
Ignition electronic, firing order 1-2-4-5-3
Cooling system jacketed watercooled with pump, radiator, 3 blades-290mm diameter fan and thermostat 6.8 lt
Lubrication system wet sump 3.5 lt
Transmission
Type four wheel drive 5 speed manual gearbox
Gearbox ratios 1st: 3.600/1 (36/10)
2nd: 2.125/1 (34/16)
3rd: 1.458/1 (35/24)
4th: 1.071/1 (30/28)
5th: 0.778/1 (28/36)
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)
1988, 5th: 1.040/1 (26/25)
R: 3.500/1 (42/12)
Diffrential ratio front and rear: 4.111/1 (37/9), 4.857/1 (34/7), 4.571/1 (32/7).
1987+: 3.889/1 (35/9), 4.222/1 (38/9)		 output from hollow secondary shaft of gearbox to open or locked 1:1 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 disc 228mm diameter
Chassis
Type steel monocoque Typ 85 chassis version of VW B2 platform with 16/28 kg AlZnMg1 aluminium (D40x3mm), or 26.5kg 25CrMo4 steel (D40x1.4 and D40x1.2mm) roll-cage. 1987: 28kg 25CrMo4 steel (D40x1.5 and D40x1mm) roll cage. 2 door coupe steel bodyshell with steel doors and front/rear bonnets, evolution version with plastic rear bonnet, plastic/steel front/rear bumpers, and plastic rear spoiler.
1992: aluminium roll cages cancelled
Front suspension mc pherson strut with lower "A" wishbone, coil spring, telescopic gas shock absorber and antiroll bar 19/22/28mm diameter
Rear suspension mc pherson strut with lower "A" wishbone, coil spring, telescopic gas shock absorber and antiroll bar 19/22/28mm diameter
Steering system rack and pinion with hydraulic power assistance 2.5 turns lock to lock. 15.7/1, 16.7/1, 14/1, 13.4/1 ratio
Brakes front ventilated discs 256mm diameter with 1 GG cast iron piston caliper 54mm diameter, rear solid discs 245mm diameter and 1 GG cast iron piston caliper 36mm diameter.
Front/rear ventilated discs 280/295/304mm diameter with 4 Girling aluminium piston calipers 2x33.9+2x43mm pairs diameter.
Front/rear ventilated discs 280/295mm diameter with 4 AP aluminium piston calipers 31/38/41.3mm pairs diameter.
Front ventilated discs 330mm diameter with 4 Alcon aluminium piston calipers 44.4/(2x41.7+2x44.4)mm pairs diameter, **rear* ventilated discs 280mm diameter with 4 Alcon aluminium piston calipers 34.9mm diameter		 dual circuit with ATE or Girling vacuum servo, adjustable ratio split front to rear
Dimensions
length: 4.421 m (174.0 in) width: 1.682 m (66.2 in) height: 1.350 m (53.1 in)
wheelbase: 2.525 m (99.4 in) front track: 1.424 m (56.1 in) rear track: 1.424 m (56.1 in)
Rims - tires 6" - 7" x 14" - 15" Pirelli P7 M+S, 155/85-15", 205 x 15
Weight 1050 - 1200 kg 50/50% front - rear distribution
Weight/power 6 kg/HP
Fuel tank 70 - 80 lt
Drag coefficient 0.36

Results in WRC

Statistics

1986 1987 1988 1989 1990 1991 1992 Total
Works WRC results
Races 2 2
Entries/finishes 1/1 1/1 (100%)
Others WRC results
Races +4 10 10 4 3 2 2 35
Entries/finishes 7/5 33/20 32/20 14/4 9/5 4/2 3/1 102/57 (55.9%)
Total WRC results
Races 6 10 10 4 3 2 2 37
Entries/finishes 8/6 33/20 32/20 14/4 9/5 4/2 3/1 103/58 (56.3%)
Total points 18 51 53 122
(3.297 per race)
(1.184 per entry)

Races

Works team: Audi Sport

Season

Group A classification is noted in brackets
Entry Rally event
Driver
Codriver		 Team MC SVE
Entry list		 POR KEN TdC GRE NZ ARG FIN (CdI) SR RAC (Oly)
Gunnar Pettersson
Arne Pettersson/
Björn Cederberg		 works 5th (2nd) acci dent*
Pierre Bos
Jean-Claude Leuvrey		 13th (4th) dnf
Lasse Lampi
Pentti Kuukkala		 VV Auto 9th (1st) 12th (3rd)
Lasse Gundler
Christian Bodén		 11th (7th)
Rudi Stohl
Reinhard Kaufmann		 6th (1st) 6th (2nd) 15th (4th)
Jorge Recalde
Jorge del Buono		 acci dent
Fabio Moscato
Marcello Lotti		 dnf
Total points
()		 18 6 5 5 2
Statistics
Works starts/finishes 1/1 1/1
Others starts/finishes 11/7 1/1 1/1 2/1 1/1 2/1 3/1 1/1

*Private entry with Team VAG Sweden

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Articles from KV Quattro

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Article from 4T 219, 12/1988

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Article from Autocar 1/1/1986

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Drawings

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page revision: 114, last edited: 01 Jun 2019 16:38
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