Toyota Corolla AE86 GT group A (1984)
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1984: Toyota Corolla AE86 GT
1985: Toyota Corolla AE82 FX 16V
1989: Toyota Corolla AE92 GTi


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Group A manual
All about Toyota twin cam

Group/Class A/6 Homologation number: A5179 (2 door) and A5180 (3 door)
Years active 1984-1990 Homologation start: 1/1/1984
Homologation end: 31/12/1993
Type Toyota 4A-GE Mk I, straight 4cyl, 4 stroke located front longitudinal
Capacity 1587 cc WRC: 1587cc
Bore x Stroke (mm) 81.0 x 77.0
Compression ratio 11.0:1
Output power - torgue 180 HP / 6600 rpm 20.2 kgm (198 Nm) / 5200 rpm
Main bearings 5 of 52mm diameter connecting rod length between centers 122mm, big end bearing internal diameter 43mm
Materials block: cast iron with 191mm dech height and 89mm bore spacing cylinderhead: aluminium alloy
Cams/valves dual overhead camshaft (DOHC), belt driven 4 valves/cyl. - 16 valves total. 30.7mm inlet valve diameter, 25.7mm exhaust valve diameter. 25o angle between inlet valve axis and vertical, 25o angle between exhaust valve axis and vertical
Aspiration natural, Nippon Denso D-jetronic multipoint electronic fuel injection
Ignition electronic, firing order 1-3-4-2
Cooling system watercooled
Lubrication system wet sump
Type rear wheel drive 5 speed gearbox
Gearbox ratios constant: 1.435/1 (33/23)
1st: 3.587/1 (35/14)
2nd: 2.022/1 (31/22)
3rd: 1.384/1 (27/28)
4th: 1.000/1
5th: 0.861/1 (21/35)
R: 3.484/1 (34/21 x 21/14)
constant: 1.444/1 (26/18)
1st: 2.347/1 (26/16)
2nd: 1.733/1 (24/20)
3rd: 1.379/1 (21/22)
4th: 1.144/1 (19/24)
5th: 1.000/1
R: 3.405/1 (33/17 x 17/14)
Diffrential ratio 4.300/1 (43/10), 4.875/1 (39/8), 5.125/1 (41/8) hypoid spiral bevel gears limited slip rear differential
Clutch dry single disk
Type steel monocoque AE86 chassis with roll-cage. 2 of 3 door coupe steel bodyshell with plastic bumbers
Front suspension macpherson strut with lower arm, coil spring, telescopic gas shock absorber and 16 to 30mm diameter anti-roll bar
Rear suspension live axle with 4 longitudinal control arms, panhar rod, coil springs, telescopic gas shock absorber and anti-roll bar
Steering system rack and pinion 2.5 turns lock to lock
Brakes front ventilated disks with 234mm disk diameter and 1 piston caliper, or 260/266/280mm disk diameter and 4 piston calipers. Rear brake drum 230mm diameter, or solid disks with 231mm disk diameter and 1 piston caliper, or ventilated disks with 260/264mm diameter and 2 or 4 piston calipers dual circuit with servo, adjustable ratio split front to rear
length: 4.180 m (164.5 in) width: 1.625 m (64.0 in) height: 1.335 m (52.6 in)
wheelbase: 2.400 m (94.5 in) front track: 1.355 m (53.3 in) rear track: 1.345 m (53.0 in)
Rims - tires 5 - 6J x 13" - 14" 185/70 HR 13
Weight 920 kg
Weight/power 5.1 kg/HP
Fuel tank 50 lt
Drag coefficient 0.35

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