BMW 2002 Turbo group 2 (1974)
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Home » Rally Cars » BMW 2002 Turbo
BMW_2002_Turbo_%282008-06-28%29_ret.jpg Source Development chain
1969: BMW 2002 Ti
1974: BMW 2002 Turbo
1987: BMW E30 M3

Specifications

Brochure
Kugelfisher manual
Group/Class 2 Homologation number: 1663
Years active 1974 - 1975 Homologation start: 1/8/1974
Homologation end: 1/1/1981
Engine
Type BMW M31, straight 4cyl, 4 stroke located front longitudinal
Capacity 1990 cc WRC: 1990 cc
Bore x Stroke (mm) 89.0 x 80.0
Compression ratio 7.0:1
Output power - torgue 170 HP @ 5800 rpm 24.5 kgm @ 4000 rpm
Main bearings 5 of 48 mm diameter connecting rod length between centers 148 mm, big end bearing 48 mm diameter
Materials block: cast iron cylinderhead: aluminium alloy
Cams/valves single overhead camshaft (SOHC), chain driven 2 valves/cyl. - 8 valves total, 46 mm inlet valve diameter, 38 mm exhaust valve diameter
Aspiration KKK turbocharger with Bosch Kugelfischer Schafer PL04-124 Fuel Injection Pump for mechanical fuel injection
Ignition electronic, firing order 1-3-4-2
Cooling system watercooled 7 lt
Lubrication system dry sump with 3 stage pump 6 lt
Transmission
Type rear wheel drive Getrag 242/3 or 235/5, 4 speed gearbox or 5 speed gearbox
Gearbox ratios 1st: 3.764/1 (34/14)
2nd: 2.020/1 (26/20)
3rd: 1.320/1 (23/27)
4th: 1.00/1 (20/31)
R: 4.096/1 (37/14)
1st: 3.368/1 (30/32)
2nd: 2.16/1 (30/26)
3rd: 1.579/1 (30/23)
4th: 1.241/1 (30/22)
5th: 1.00/1 (30/22)
R: 4.00/1 (30/38)
Diffrential ratio 3.36/1 (37/11), 4.11/1 (37/9) hypoid spiral bevel gears limited slip rear differential
Clutch dry single or double disk 228 mm diameter
Chassis-body
Type steel monocoque BMW 114 chassis with roll-cage. 2 door coupe steel bodyshell with steel bumbers
Front suspension mcpherson strut with lower wishbone, coil springs, Bilstein telescopic gas shock absorbers (450lb/in) and 22mm diameter anti roll bar
Rear suspension semi trailing arm with coil springs, Bilstein telescopic gas shock absorbers (450lb/in) and 19mm diameter anti roll bar
Steering system ZF Gemmer worm and roller, rack and pinion 3.5 or 2.9 turns lock to lock
Brakes front ventilated disks 254/256/302/304mm diameter, rear drums 250mm diameter with 1 dual piston caliper 22.2 mm diameter dual circuit with servo, adjustable ratio split front to rear
Dimensions
length: 4.220 m (166.1 in) width: 1.620 m (64.0 in) height: 1.270 - 1.410 m (50.0 - 56.0 in)
wheelbase: 2.500 m (98.4 in) front track: 1.375 m (54.1 in) rear track: 1.362 m (53.6 in)
Rims - tires 6J x 13", 8" - 11" x 15" 185/70 VR13, 195/70 R15, 235/55 R15
Weight 1050 kg
Weight/power 5.4 kg/HP
Fuel tank 70 lt
Drag coefficient 0.40
Getrag 235/5
rally version: 1st: 2.71/1 ()
2nd: 1.84/1 ()
3rd: 1.38/1 ()
4th: 1.13/1 ()
5th: 1.00/1 ()
race version: 1st: 2.30/1 ()
2nd: 1.56/1 ()
3rd: 1.28/1 ()
4th: 1.09/1 ()
5th: 1.00/1 ()

Results in WRC

Races

Season
Entry Rally event
Driver
Codriver
Team M.C SVE KEN GRE MAR POR FIN S.R TdC RAC
Horst Rausch
Manfred Helfrich
37th
Michel Ollier
Pierre Vollaire
dnf
Richard Stoen
Einar Nalby
34th
D. Renner
R. Hausler
dnf
Statistics
Starts/finishes 4/2 3/2 1/0

BMW_2002_Turbo_dutch_licence_registration_38-FP-18_pic2.JPG Source
B01435_ZF_Schneckenrollenlenkung_Gemmer_Lenkhilfe_1953.jpg_3_2_748px.jpg Source
ZF Gemmer steering box

Drawings

bmw-2002-turbo-1972.png Source

Chassis and body

2002-Chassis.jpg Source
bodystructurecompare02p1.jpg Source
02rearwheelbearings02diagramspec.jpg Source
Rear axle

Engine

bmw_2002_turbo_motor_p0025853-b.jpg Source
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