Audi Coupe B2 Quattro (Type 85) group A (1986)

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Development chain 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
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 |
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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
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
Articles from KV Quattro
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Article from 4T 219, 12/1988
Click here
Article from Autocar 1/1/1986
Click here
Drawings

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