Mitsubishi Lancer A73 group 2 (1973)
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Home » Rally Cars » Mitsubishi Colt Lancer A73
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1973: Mitsubishi Colt Lancer A73
1982: Mitsubishi Lancer A175A Turbo
1993: Mitsubishi Lancer RS Evo
1994: Mitsubishi Lancer Evo II
1995: Mitsubishi Lancer Evo III
1997: Mitsubishi Lancer Evo IV
1998: Mitsubishi Lancer Evo V
1999: Mitsubishi Lancer Evo VI

Also called Mitsubishi Colt Lancer GSR

Specifications

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Group/Class 2 Homologation number: 5528 1/1V and 5770
Years active 1973-1977 Homologation start: 1/9/1973 and 1/1/1980
Homologation end: 31/12/1981
Engine
Type Mitsubishi 4G32, straight 4cyl, 4 stroke, petrol engine located front longitudinal
Capacity 1597 cc WRC: 1597 cc
Bore x Stroke (mm) 76.9 mm x 86.0
Compression ratio 8.5:1, 1977: 9.5:1, 11.0:1
Output power - torgue 100 Hp @ 6300 rpm
169 hp / 126 kW @ 7800 rpm
14 kgm @ 4000rpm
162 Nm (119 lbft) @ 5500 rpm
Main bearings 5 of 57/58mm. Big end bearings journal 45mm big end bearing 48mm diameter, aluminium piston 33mm (1977: 34mm) compression height. Piston rings 2/2/4mm, piston pin 19mm diameter
Materials block: cast iron, 87.5 mm bore spacing cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers
Cams/valves single or double overhead camshaft (SOHC or DOHC), chain driven, 1977: belt driven 2 valves/cyl. - 8 valves total, 38 mm inlet valve diameter, 31 mm exhaust valve diameter
Aspiration natural, 2 x Mikuni 28-32 DIDSA carburetors. 1977: 2 x Mikuni 28-32 DIDTA
Ignition electronic, firing order 1-3-4-2, 12V battery
Cooling system jacketed watercooled with pump, radiator, 325 mm (1977: 340mm) diameter-6 blades fan and thermostat 6 lt
Lubrication system wet sump 4 lt
Transmission
Type rear wheel drive Mitsubishi, 4 or 5 speed manual gearbox
Gearbox ratios constant: 1.706/1 (29/17)
1st: 3.53/1 (31/15)
2nd: 2.19/1 (27/21)
3rd: 1.44/1 (22/26)
4th: 1.00/1
R: 3.87/1 (34/15 x 15/15)
constant: 1.556/1 (28/18)
1st: 3.22/1 (31/15)
2nd: 2.00/1 (27/21)
3rd: 1.43/1 (23/25)
4th: 1.00/1
R: 3.53/1 (34/15 x 15/15)
Group 2: constant: 1.238/1 (26/21)
1st: 3.24/1 (34/13)
2nd: 1.96/1 (30/19)
3rd: 1.34/1 (26/24)
4th: 1.00/1
5th: 0.85/1 (20/29)
R: 3.08/1 (37/19 x 19/15)
1977: constant: 1.556/1 (28/18)
1st: 3.22/1 (31/15)
2nd: 2.00/1 (27/21)
3rd: 1.32/1 (22/26)
4th: 1.00/1
5th: 0.85/1 (17/31)
R: 3.67/1 (33/16 x 16/14)
1977: constant: 1.474/1 (28/19)
1st: 3.37/1 (32/14)
2nd: 2.04/1 (29/21)
3rd: 1.36/1 (24/26)
4th: 1.00/1
5th: 0.86/1 (18/31)
R: 3.64/1 (37/19 x 19/15)
Diffrential ratio 3.89/1 (35/9), 4.22/1 (38/9) hypoid spiral bevel gears rear differential
Clutch dry single plate 202mm diameter
Chassis-body
Type steel monocoque Mitsubishi A73 chassis. 2 or 4 door saloon bodyshell. Group 2: extended wheel arches
Front suspension mcpherson strut with one lower transverse arm and a longitudinal radius rod, coil springs, telescopic shock absorbers and anti roll bar
Rear suspension live axle with leaf springs and telescopic shock absorbers
Steering system recirculating ball (no servo) 3.5 turns lock to lock
Brakes front solid discs 229 mm diameter with 1 piston caliper 51.1 mm diameter. Rear drums 203 or 228mm diameter with 1 double piston caliper 19mm diameter dual circuit with vacuum servo
Dimensions
length: 3.960m (155.9") width: 1.525 m (60"), group 2: +100 mm height: 1.360 m (53.5")
wheelbase: 2.340 m (92.2") front track: 1.275 m (50.2") rear track: 1.255 m (49.4")
Rims - tires 4J x 13" 155 SR x 13
Weight 775-870 kg
Fuel tank 50 lt

Results in WRC

Races

Works team: Mitsubishi Motors

Season
Entry Rally event
Driver
Codriver
Team POR KEN FIN S.R R.L P.R RAC TdC
Joginder Singh
David Doig
works 1st
Davinder Singh works dnf
Total points
()
10 10
Statistics
Others starts/finishes 2/1 2/1

1974SafariSinghDoigLancer16002.jpg Source
Joginder Singh in Safari rally '74
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