Mitsubishi Lancer A175A Turbo group A (1982)
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photos_mitsubishi_lancer_1981_1_1024x768.jpg Source Development chain
1973: Mitsubishi 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
Development level
Group B
Group A


Group/Class A/8 Homologation number: A5070 and A5239
Years active 1980 Homologation start: 1/10/1982 and 1/7/1984
Homologation end: 31/12/1988 and 31/12/1991
Type Mitsubishi Sirius 4G62T, straight 4 cyl, 4 stroke, petrol engine located front longitudinal with 4o inclination
Capacity 1796 cc WRC: x 1.4 = 2514 cc.
1988: x 1.7 = 3053 cc
Bore x Stroke (mm) 80.6 mm x 88.0
Compression ratio 9.5:1
Output power - torgue
Main bearings forged steel crankshaft with 5 main bearings 57mm. Big end bearings journal diameter 45mm. Silent Shaft Technology, 2 counterbalancing shafts that rotated in opposite directions, cancelling the power pulses inherent in an inline four-cylinder engine connecting rod length between centers 150mm, big end bearing tunnel diameter 48mm, aluminium alloy piston with 34mm compression height
Materials block: cast iron, 61mm main bearings tunnel diameter cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers
Cams/valves single overhead camshaft (SOHC), belt driven 2 valves/cyl. - 8 valves total, 43 mm inlet valve diameter, 35 mm exhaust valve diameter, 23o angle between inlet and exhaust valve axis. 1984, A5239: 20.5o angle between inlet and exhaust valve axis
Aspiration natural, 1 x Mitsubishi (IHI) TC05-12A turbocharger (12 blades cast iron turbine 47.6/56mm in/out diameter, 14 blades aluminium alloy turbine 40/54mm in/out diameter). 1984, A5239: with air/air intercooler. Mikuni ECI electronic 2 points fuel injection
Ignition electronic with contact breakers, firing order 1-3-4-2, 12V battery
Cooling system jacketed watercooled with pump, radiator, 340 mm diameter-7 blades fan and thermostat 6 lt
Lubrication system wet sump 4 lt
Type rear wheel drive KM132-A, 5 speed manual gearbox
Gearbox ratios constant: 1.474/1 (28/19)
1st: 3.74/1 (33/13)
2nd: 2.14/1 (29/20)
3rd: 1.36/1 (24/26)
4th: 1.00/1
5th: 0.86/1 (18/31)
R: 3.67/1 (33/15 x 15/14)
constant: 1.091/1 (24/22)
1st: 2.85/1 (34/13)
2nd: 2.11/1 (31/16)
3rd: 1.58/1 (29/20)
4th: 1.23/1 (26/23)
5th: 1.00/1
R: 2.65/1 (36/17 x 17/14)
Diffrential ratio 3.909/1 (43/11), 4.22/1 (38/9), 4.63/1 (37/8).
1984, A5239: 3.308/1 (43/13), 3.545/1 (39/11)
hypoid spiral bevel gears rear differential
Clutch dry single plate 202mm diameter
Type steel monocoque Mitsubishi A175A chassis with 20.2kg alumiunium alloy (D40x3.5mm) roll cage. 1984, A5239: 20.5kg A2024TE-T4 (D40x4mm) roll cage. 4 door saloon steel bodyshell with steel doors, steel front/rear bonnets, and polypropylene front/rear bumpers
Front suspension mcpherson strut with one lower transverse arm and a longitudinal radius rod, coil springs, telescopic shock absorbers and anti roll bar D18-20-22 mm
Rear suspension live axle with 2 lower longitudinal radius links, 2 upper semi trailing locating (45o) links, coil springs and telescopic shock absorbers
Steering system recirculating ball (no servo) 20.5/1 ratio. **1984, A5239: 18/1 or 15/1 ratio
Brakes Front ventilated discs 242mm diameter with 1 cast iron piston caliper 53.9 mm diameter, rear solid discs 231mm diameter with 1 cast iron piston caliper 38.1mm diameter.
Front ventilated discs 256mm diameter with 1 cast iron piston caliper 50.8/54mm diameter, rear ventilated discs 247mm diameter with 1 cast iron piston caliper 50.8mm diameter.
1984, A5239: Front ventilated discs 256mm diameter with 1 cast iron piston caliper 57.2mm diameter, rear ventilated discs 247mm diameter with 1 cast iron piston caliper 41.3mm diameter
dual circuit with Jido Shakiki vacuum servo
length: 4225 mm (166.3") width: 1620 mm (63.78") height: 1.385 m (54.5")
wheelbase: 2.440 m (96.7") front track: 1.335 m (52.6") rear track: 1.325 m (52.2")
Rims - tires 5.5 J-14" (24 mm offset) 175/70 HR14 or 185/70 R14
Weight 1000 kg
Fuel tank 50 lt
Drag coefficient 0.49

Results in WRC


Works team: -

Entry Rally event
Seisuke Ohba
Yasuo Kusakabe
eng ine
Others starts/finishes 1/0 1/0

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