Opel Kadett E 1.8 GSi group A (1984)
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Home » Rally Cars » Opel Kadett E 1.8 GSi
1987kadettgsi.jpg Source Development chain
1967: Opel Kadett B
1975: Opel Kadett C GT/E
1978: Opel Kadett C2 GT/E
1982: Opel Kadett D GT/E
1984: Opel Kadett E 1.8 GSi
1987: Opel Kadett E 2.0 GSi
1988: Opel Kadett E GSi 16V
1992: Opel Astra F GSI 16V
Development level
Group B
Group A

Also called Vauxhall Astra GT/E (Great Britain)
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Specifications

Group/Class A/7 Homologation number: A5242 and A5255 (Vauxhall)
Years active 1985 - 1987 Homologation start: 1/11/1984 and 1/2/1985 (Vauxhall)
Homologation end: 31/12/1991
Engine
Type GM Family II 18SE, straight 4cyl, 4 stroke, petrol engine located front transverse with 6o front inclination
Capacity 1796 cc WRC: 1796 cc
Bore x Stroke (mm) 84.8 x 79.5
Compression ratio 11.4:1
Output power - torgue 170 HP / 7200 rpm 19.9 kgm (195 Nm) / 5200 rpm
Main bearings cast iron crankshaft with 5 main bearings 58mm diameter, 49mm big end journals diameter cast iron connecting rod distance between centers 136mm, big end bearing tunnel diameter 52.6mm, aluminium aloy piston with 40mm compression height
Materials block: cast iron, 271mm height cylinderhead: cross flow aluminium alloy with "wedge" shape combustion chambers, 96mm height
Cams/valves single overhead camshaft (SOHC), belt driven 2 valves/cyl. - 8 valves total. 41mm inlet valve diameter, 35mm exhaust valve diameter. 0o angle between inlet and exhaust valve axis
Aspiration natural, Bosch LE-jetronic multipoint electronic fuel injection
Ignition EZ61 electronic, firing order 1-3-4-2
Cooling system jacketed watercooled with pump, radiator, 4 blades 280/366mm diameter fan and thermostat 7.5 lt
Lubrication system wet sump with 1 oil cooler 4.1 lt
Transmission
Type front wheel drive F16, 5 speed manual gearbox
Gearbox ratios F16/5W, 1st: 3.417/1 (41/12)
2nd: 2.158/1 (41/19)
3rd: 1.48/1 (37/25)
4th: 1.121/1 (37/33)
5th: 0.892/1 (33/37)
R: 3.33/1 (27/12 x 40/27)
1st: 2.538/1 (33/12)
2nd: 1.764/1 (30/17)
3rd: 1.421/1 (27/19)
4th: 1.190/1 (25/24)
5th: 1.043/1 (24/23)
R: 3.33/1 (27/12 x 40/27)
Diffrential ratio 3.74/1 (71/19). 1985: 3.94/1 (71/18), 4.19/1 (67/16), 4.20/1 (63/15), 4.78/1 (67/14), 4.85/1 (63/13), 5.18/1 (57/11) helical gears limited slip front differential
Clutch dry single disc, 216mm diameter
Chassis-body
Type steel monocoque chassis of General Motors T platform with front suspension steel sub-frame, and 19kg aluminium H30TF (D38x3.2mm) roll-cage. 3 door hatchback steel bodyshell, steel doors, steel front/rear bonnets, plastic front/rear bumpers and plastic rear spoiler
Front suspension mac pherson strut with lower "L" wishbone, coil springs (tarmac 200 lbs), telescopic gas shock absorbers and anti roll bar
Rear suspension trailing torsion beam arm with coil springs (tarmac 200 lbs), telescopic gas shock absorbers and anti roll bar
Steering system rack and pinion with optional hydraulic power assistance 22/1, 18/1, 15/1 ratio
Brakes Front ventilated discs 236mm diameter with 1 cast iron piston caliper 52mm diameter, rear drums 200mm diameter with 1 double cast iron piston caliper 17.46mm diameter.
1985: Front ventilated discs 256mm diameter with 1 cast iron piston caliper 54mm diameter, rear solid discs [A5254: 236mm/A5255: 226mm] diameter with 1 cast iron piston caliper 36mm diameter.
Front ventilated discs 255/290mm diameter with 4 aluminium piston calipers 38mm diameter, rear solid discs 250mm diameter with 2 aluminium piston calipers 41.2mm diameter.
A5255: front ventilated discs 290mm diameter with 4 aluminium piston calipers 41.3mm diameter.
A5255, 1986: Front ventilated discs 290mm diameter with 4 aluminium piston calipers 2x41.3+2x38.1mm pairs diameter, rear solid discs 251mm diameter with 2 aluminium piston caliper 32/36mm diameter.
dual circuit with GM Vacuum servo, adjustable ratio split front to rear. A5255, 1987: front disc brake protection shield
Dimensions
length: 3.998 m (157.4") width: 1.663 m (65.5") height: 1.395 m (54.9")
wheelbase: 2.520 m (99.2") front track: 1.406 m (55.4") rear track: 1.406 m (55.4")
Rims - tires 5.5 x 13", 14" or 15" Michelin, gravel:
M4 or M5, 14/60-14XT (175/70-14),
L81 or L91, 16/62-15 (195/60x15),
snow: 15/65-15 (195/65R15)
Weight 940 kg
Fuel tank 42 lt
Drag coefficient 0.30

Results in WRC

Statistics

1984 1985 1986 1987 1988 Total
Works
Races 1 1
Entries/finishes 1/1 1/1 (40%)
Others
Races 1 3/(1) 4 +4 1 11/(1)
Entries/finishes 1/0 10/6 12/8 13/3 1/1 37/18 (48.6%)
Total WRC results
Races 1 3 4 5 1 12/(1)
Entries/finishes 1/0 10/6 12/8 14/4 1/1 38/19 (50%)

Races

Works team: GM Euro Sport

Season

Group A classification is noted in brackets
Entry Rally event
Driver
Codriver
Team M.C (SVE)
Entry list
POR KEN TdC GRE N.Z ARG FIN S.R (CdI) RAC
Kenneth Eriksson
Ragnar Spjuth
Opel Team Sweden gear box
Statistics
Others starts/finishes 1/0 1/0

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