Audi Coupe B3 S2 group A (1993)
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1986: Audi Coupe B2 Quattro
1993: Audi Coupe B3 S2		 Development level
Group A
Group N
Production

Specifications

Group/Class A/8 Homologation number: A5467
Years active 1993 Homologation start: 1/1/1993
Homologation end: 31/12/2000
Engine
Type ABY, straight 5cyl, 4 stroke located front longitudinal with 27.5o right inclination (to co drivers side-LHD)
Capacity 2226 cc WRC: x 1.7 = 3784 cc
Bore x Stroke (mm) 81.0 x 86.4
Compression ratio 8.5:1
Output power - torgue 300 HP / 4300 rpm 58.1 kgm (570 Nm) / 3800 rpm
Main bearings 6 of 58mm diameter connecting rod length between centers 144mm, big end bearing tunnel diameter 50.6mm, aluminium alloy piston with 33.5mm compression height
Materials block: cast iron 277.8mm height, 88mm bore spacing, 220mm deck height cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers, 112.5mm height
Cams/valves 2 overhead camshafts (DOHC), chain or belt driven 4 valves/cyl. - 20 valves total. 32.1mm inlet valves diameter, 28.1mm exhaust valves diameter. 25o angle between inlet valves and vertical, 0o angle between exhaust valves and vertical.
Aspiration KKK K24 turbocharger (12 blades nickel alloy turbine 43.9/59mm in/out diameter, 12 blades aluminium alloy compressor 42.4/60.6mm in/out diameter) with air/air intercooler, Bosch Motronic LH multipoint electronic fuel injection pressure: 1.7 bar
Ignition electronic, firing order 1-2-4-5-3
Cooling system jacketed watercooled with pump, radiator, 3 blades-305mm diameter fan and thermostat 8.5 lt
Lubrication system wet sump with 1 oil cooler 5 lt
Transmission
Type four wheel drive Audi 01E, 6 speed manual gearbox
Gearbox ratios 1st: 3.500/1 (35/10)
2nd: 1.842/1 (35/19)
3rd: 1.222/1 (33/27)
4th: 0.903/1 (28/31)
5th: 0.714/1(25/35)
R: 3.444/1 (31/9)		 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: 0.962/1(25/26)
R: 3.455/1 (38/11)		 1st: 3.000/1 (27/9)
2nd: 2.083/1 (25/12)
3rd: 1.571/1 (22/14)
4th: 1.286/1 (27/21)
5th: 1.043/1(24/23)
6th: 0.880/1(22/25)
R: 3.455/1 (38/11)		 1994, 1st: 3.500/1 (28/8)
2nd: 1.889/1 (34/18)
3rd: 1.320/1 (33/25)
4th: 1.034/1 (30/29)
5th: 0.858/1(30/35)
6th: 0.711/1(27/38)
R: 3.455/1 (38/11)
Diffrential ratio front and rear: 4.111/1 (37/9), 3.400/1 (34/10), 3.500/1 (35/10), 3.555/1 (32/9), 3.778/1 (34/9), 3.800/1 (38/10), 3.889/1 (35/9), 4.000/1 (36/9), 4.250/1 (34/8), 4.375/1 (35/8), 4.429/1 (31/7), 4.444/1 (40/9), 4.571/1 (32/7), 4.625/1 (37/8), 4.857/1 (34/7), 5.143/1 (36/7), 5.286/1 (37/7), 5.429/1 (38/7), 5.571/1 (39/7), 5.857/1 (41/7).
1994: 4.111/1 (37/9)		 output from gearbox hollow secondary shaft to torsen 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. 25-75/75-25 front/rear torque distribution
Clutch dry single disc 240mm diameter
Chassis
Type steel monocoque Audi Typ 8B chassis version of VW B3 platform with roll-cage. Front and rear "Π" steel/aluminium cross member sub frames. 3 door liftback/coupe steel bodyshell with steel/aluminium doors, steel front bonnet, plastic rear bonnet, steel+polypropylen front/rear bumpers, and glass fiber reinforced polyester rear spoiler
Front suspension McPherson strut with lower triangular wishbone, coil spring, telescopic gas shock absorber and anti roll-bar 10 to 40mm diameter
Rear suspension McPherson strut with lower triangular wishbone, coil spring, telescopic gas shock absorber and anti-roll bar 10 to 40mm diameter
Steering system rack and pinion with hydraulic power assistance 2.6 turns lock to lock
Brakes Front ventilated discs 276mm diameter with 2 cast iron piston calipers 2x40.4+2x45mm pairs diameter, rear solid discs 245mm diameter with 1 cast iron piston caliper 38.1mm diameter.
Front/rear ventilated discs 330/355/373mm diameter with 4 aluminium piston calipers 2x41.3+2x44.5mm pairs diameter, or 304mm diameter with 4 aluminium piston calipers 2x41.3+2x38mm pairs diameter, or 280/295mm diameter with 4 aluminium piston calipers 31/38/41.3mm diameter, or 280/295mm diameter with 4 aluminium piston calipers 2x33.9+2x43mm pairs diameter, or 280mm diameter with 4 aluminium piston calipers 34.9mm diameter
Front ventilated discs 332/355mm diameter with 4 aluminium piston calipers 2x38+2x44mm pairs diameter, rear ventilated discs 313mm diameter with 4 aluminium piston calipers 2x30+2x34mm pairs diameter.
Front ventilated discs 313mm diameter with 4 aluminium piston calipers 2x36+2x44mm pairs diameter, rear ventilated discs 313mm diameter with 4 aluminium piston calipers 2x30+2x34mm pairs diameter.
1994: front ventilated discs 314mm diameter with 2 aluminium piston calipers 42.8mm diameter.
front/rear ventilated discs 280/295/304/330/355/373mm diameter with 4 aluminium piston calipers (2x38+2x44)/(2x30+2x34)mm pairs diameter		 dual circuit with Tewes Oldruck hydraulic oil pressure servo, ABS (Anti-lock Braking System), adjustable ratio split front to rear, stone protection shields for front/rear discs, air cooling hoses for front/rear discs, water cooled brake calipers with 18 lt water tank
Dimensions
length: 4.393 m (173.0 in) width: 1.725 m (67.9 in) height: 1.375 m (54.1 in)
wheelbase: 2.549 m (100.4 in) front track: 1.445 m (56.9 in) rear track: 1.436 m (56.6 in)
Rims - tires gravel: 6.5" or 7" x 15" - 16"
tarmac: 17" - 18"		 gravel: 195/65-15
Weight 1300 - 1400 kg 59-41% distribution front/back
Fuel tank 70 lt
Drag coefficient 0.32

Results in WRC

Statistics

1993 1994 1995 1996 1997 1998 Total
Total WRC results
Races 8 7 7 6 2 2 32
Entries/ finishes 9/7 1/4 9/4 7/1 2/1 2/0 39/17 (43.6%)
Total points 17 13 12 3 45
(1.406 per race)
(1.184 per car)

Races

Works team: -

Season
Entry Rally event
Driver
Codriver		 Team M.C SVE POR KEN T.dC GRE ARG N.Z FIN AUS S.R ESP RAC
Sepp Haider
Klaus Wendel		 SMS Revo Ingenieure 7th gear box 5th
António Ferreira da Cunha
Carlos Resende		 15th
Rudi Stohl
Peter Diekmann		 8th eng ine 7th
Manfred Stohl
Kay Gerlach		 12th
Esa Saarenpää
Lasse Hirvijärvi		 17th
Total points
()		 17 4 3 4 6
Statistics
Starts/finishes 9/7 1/1 1/1 1/1 1/0 2/2 1/0 1/1 1/1
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Information and articles

Article from 4T 284, 3/1994

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Drawings

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page revision: 62, last edited: 26 May 2019 07:29
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