Mitsubishi Lancer A73 group 2 (1973)
 Source |
Development chain 1973: Mitsubishi Colt Lancer A73 1980: Mitsubishi Lancer A175A 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, 5742 and 5770 | ||||
| Years active | 1973-1977 | Homologation start: 1/9/1973, 1/1/1979 and 1/1/1980 Homologation end: 31/12/1981 |
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| 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 |
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| 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) |
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| 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
page revision: 183, last edited: 11 Dec 2019 19:56