Opel Kadett E 1.8 GSi group A (1984)
 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
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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SourcePentti Airikkala in RAC '85
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page revision: 128, last edited: 10 Nov 2019 12:10