BMW E30 M3 group A (1987)
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Home » Rally Cars » BMW E30 M3
Snijers-Colebunders-Manx-Rally-1988.jpg Source Development chain
1969: BMW 2002 Ti
1974: BMW 2002 Turbo
1987: BMW E30 M3

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Specifications

Group/Class A/8 Homologation number: A 5327
Years active 1987 - 1990 Homologation start: 1/3/1987
Engine
Type S14B23, straight 4, 4 stroke located front longitudinal
Capacity 2302 cc (max 2332 cc) WRC: 2302 cc (max 2332 cc)
Bore x Stroke (mm) 93.4 (max 94.0) x 84.0
Compression ratio 12.0:1
Output power - torgue 280 - 300 HP / 8400 rpm 29.0 kgm (285 Nm) / 6500 rpm
Main bearings 5 of 55mm diameter connecting rod length 144mm, big end bearing internal diameter 152mm
Materials block: cast iron cylinderhead: aluminium alloy
Cams/valves 2 overhead camshafts (DOHC), chain-driven 4 valves/cyl. - 16 valves total. 37mm inlet valves diameter, 32mm exhaust valves diameter. Angle between valves 38o, symmetrical with vertical direction. 2 concentric coil springs per valve
Aspiration natural, Bosch DME Motronic electronic multi point fuel injection
Ignition Bosch DME mapped electronic, firing order 1-3-4-2
Cooling system watercooled 10.5 lt
Lubricating system wet sump with 1 oil cooler 5 lt
Transmission
Type rear wheel drive Getrag 265 5 speed gearbox, 1988+: 6 speed gearbox
Gearbox ratios constant input 1.652/1 (38/23)
1st: 3.717/1 (36/16)
2nd: 1.681/1 (32/22)
3rd: 2.403/1 (31/29)
4th: 1.766/1 (26/34)
5th: 1.000/1
R: 4.234/1 (41/16)
constant input 1.038/1 (27/26)
1st: 2.337/1 (36/16)
2nd: 1.681/1 (34/21)
3rd: 1.358/1 (34/26)
4th: 1.150/1 (31/28)
5th: 1.000/1
R: 2.660/1 (41/16)
7/1988+: constant input 1.148/1 (31/27)
1st: 2.449/1 (32/15)
2nd: 1.913/1 (30/18)
3rd: 1.579/1 (33/24)
4th: 1.332/1 (29/25)
5th: 1.148/1 (24/24)
6th: 1.000/1
R: 2.449/1 (32/15)
Diffrential ratio 4.450/1, (3.150/1 to 5.280/1) hypoid spiral bevel gear limited slip rear differential
Clutch dry single disk, 228mm diameter
Chassis-body
Type Steel monocoque E30 chassis with roll-cage. 2 door coupe bodyshell made of steel. Plastic rear bonnet with spoiler and plastic front and rear bumbers
Front suspension macpherson strut with lower wishbone, coil springs, telescopic gas shock absorbers and anti-roll bar
Rear suspension semi-trailing arm with coil springs, telescopic gas shock absorbers and anti-roll bar
Steering system power assisted rack and pinion 2 turns lock to lock
Brakes ventilated disks, 280 or 335mm diameter front, 280 or 300 or 335mm diameter back, 4 piston calipers all around. Anti-lock Braking System (ABS) adjustable ratio split front to rear with servo
Dimensions
length: 4.355 m (171.5 in) width: 1.680 m (66.1 in) height: 1.350 m (53.1 in)
wheelbase: 2.565 m (101.0 in) front track: 1.412 m (55.6 in) rear track: 1.424 m (56.0 in)
Rims - tires 7" x 15", 9" x 16" - 17" Michelin, slick or semi-slick, 235/590/16 or 245/610/17
Weight 1025 kg 52% - 48% distribution front - back
Weight/power 3.5 kg/HP
Fuel tank 70 lt
Drag coefficient 0.33

Results in WRC

Statistics

1987 1988 1989 1990 1991 1992 1993 1994 1995 Total
Total WRC results
Races/wins 1/1 3 5 3 2 3 4 4 3 28/1
Entries/ finishes 3/2 5/2 9/7 5/3 3/2 6/0 6/0 7/3 4/1 48/20 (41.7%)
Total points 15 11 33 8 4 1 2 74
(2.643 per race)
(1.542 per entry)

Races

Works team: -

Season
Entry Rally event
Driver
Codriver
Team MC SVE
Entry list
POR KEN TdC GRE Oly (NZ) ARG FIN (CdI) SR RAC
Marc Duez
Georges Biar
Prodrive BMW 6th
Bernard Béguin
Jean-Jacques Lenne
Rothmans BMW Motul 1st
Patrick Bernardini
José Bernardini
gear box
Total points
()
15 15
Statistics
Starts/finishes 3/2 3/2

Beguin.jpg Source
Bernard Béguin in Tour de Corse 1987

Information and articles

Article from 4T 199, 4/1987

Click here

Drawings

bmw_m3_group_a_11.jpg Source
bmw-m3-e30-2.gif Source

Engine

tumblr_l0xfv8tVId1qb88jk Source

Gearbox

2974.jpg Source

Suspension

E30_front_suspension_diagram.jpg Source
e30_rear_susp_diagram.jpg Source
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