Opel Kadett C GT/E group 2 (1975)
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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 |
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Table of Contents
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History site, group 4 history
In rally: see video
Specifications
Black/yellow - 8660 units produced between 1975 and 1977
Click here and here
Click here
Opel CIH 19S
1996cc (95.4x69.8)
works team: 210 HP @ 8200 rpm
works team: 235-240 HP for 16V version
9 x 15"
| Group/Class | 2 | Homologation number: 644 and 5624 | ||||
| Years active | 1975 - 1977 | Homologation start: 1/10/1975 and 1/2/1976 Homologation end: 1/2/1976 and 31/12/1981 |
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| Engine | ||||||
|---|---|---|---|---|---|---|
| Type | Opel CIH 19E, straight 4cyl, 4 stroke | located front longitudinal | ||||
| Capacity | 1897 cc | WRC: 1897 cc | ||||
| Bore x Stroke (mm) | 93.0 x 69.8 | |||||
| Compression ratio | 9.6:1, 11.4:1 | |||||
| Output power - torgue | 105 HP @ 5400 rpm 160-180 HP |
15.5 kgm @ 4200 rpm 240 Nm @ 5800 rpm |
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| Main bearings | forged steel crankshaft with 5 main bearings 58mm diameter | forged steel connecting rod length between centers 128 mm, big end bearing diameter 55mm, 24.8mm width, aluminium alloy piston with 45mm compression height, 22mm pin diameter | ||||
| Materials | block: grey cast iron, 208mm deck height | cylinderhead: reverse flow cast iron with "wedge" shape combustion chamber. Group 4: cross flow aluminium alloy with hemispherical combustion chambers (8V and 16V) |
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| Cams/valves | single overhead camshaft (SOHC) located between valves (not above), also called cam in head (CIH), chain driven. Operation with rocker arms and cam followers. Operation with rocker arms and cam followers. (Click here) | 2 valves/cyl. - 8 valves total. 42mm inlet valve diameter, 34mm (group 4: 35mm) exhaust valve diameter. 25o angle between inlet/exhaust valves axis and vertical (inlet and exhaust valves are parallel). Group 4: 4 valves/cyl - 16 valves total |
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| Aspiration | natural, Bosch L-jetronic electronic multipoint fuel injection. Click here and here | |||||
| Ignition | electronic, firing order 1-3-4-2 | |||||
| Cooling system | jacketed watercooled with pump, radiator, 360 mm diameter-5 blades fan and thermostat | 7 lt | ||||
| Lubrication system | wet sump, group 2 and 4: dry sump | 4.1 lt | ||||
| Transmission | ||||||
| Type | rear wheel drive | Opel 4 speed, or ZF S5-18/3 5 speed gearbox (see here) | ||||
| Gearbox ratios | constant: 1.167/1 (21/18) 1st: 2.873/1 (32/13) 2nd: 1.751/1 (24/16) 3rd: 1.290/1 (21/19) 4th: 1.00/1 (-) R: 2.69/1 (30/13) |
constant: 1.259/1 (34/27) 1st: 2.99/1 (38/16) 2nd: 1.76/1 (35/25) 3rd: 1.305/1 (31/30) 4th: 1.000/1 (-) 5th: 0.874/1 (25/36) R: 3.64/1 |
group 2: constant: 1.259/1 (34/27) 1st: 3.873/1 (40/13) 2nd: 2.398/1 (40/21) 3rd: 1.727/1 (35/25) 4th: 1.259/1 (30/30) 5th: 1.000/1 (-) R: 3.67/1 |
1978 group 2: constant: 1.033/1 (31/30) 1st: 2.30/1 (38/16) 2nd: 1.8/1 (39/21) 3rd: 1.36/1 (35/25) 4th: 1.14/1 (33/28) 5th: 1.000/1 (-) R: 2.83/1 (32/11) |
Group 4: Getrag 256/9 1st: 3.368/1 2nd: 2.160/1 3rd: 1.580/1 4th: 1.240/1 5th: 1.0/1 R: 4.0/1 |
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| Diffrential ratio | 3.444/1 (31/9), 3.667/1 (33/9), 4.750/1 (38/8), 4.222/1 (38/9), group 2: 3.182/1 (35/11), 5.286/1 (37/7), 3.889/1 (35/9) | Type 32, hypoid spiral bevel gears limited slip rear differential | ||||
| Clutch | dry single disk, 204mm diameter. Group 4: double plate 184 mm diameter | |||||
| Chassis-body | ||||||
| Type | steel monocoque Opel Kadett C chassis of GM T platform with front steel suspension cross member and roll-cage (info). 2 door coupe/liftback steel bodyshell with steel bumpers. Group 2 and 4: extended wheel arches 1977: front and rear spoilers |
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| Front suspension | double unequal wishbones with coil springs, Bilstein telescopic gas shock absorbers and anti roll bar | |||||
| Rear suspension | live axle with 2 longitudinal radius arms, panhard rod, coil springs and Bilstein telescopic gas shock absorbers | |||||
| Steering system | rack and pinion (no servo) | 3 turns lock to lock | ||||
| Brakes | front solid disks 244mm diameter with 2 piston calipers.Rear drums 230mm diameter with 1 double piston caliper 19mm diameter. Group 2 and 4: front ventilated disks 238mm diameter with 4 piston calipers 42mm diameter, rear ventilated disks 238mm diameter with 2 piston calipers 42mm diameter. 1977: caliper water injection system for cooling |
dual circuit with vacuum servo | ||||
| Dimensions | ||||||
| length: 4.124 m (162.4 in) | width: 1.594 m (62.8 in), group 2 & 4: +100mm | height: 1.355 m (52.6 in) | ||||
| wheelbase: 2.395 m (94.3 in) | front track: 1.318 m (51.9 in) | rear track: 1.314 m (51.7 in) | ||||
| Rims - tires | steel 5.5" - 6" - 8 "x 13" | M&S 35 Tyres or P7, 175/70 HR 13 (195/60 R 15) | ||||
| Weight | 850 kg | |||||
| Fuel tank | 50 lt, group 2: 100 lt | |||||
Results in WSCC
Season
| Car entry | Car number/ result | |||||||||||||
| Daytona | Mugello | Silver stone | Nurb | Watkins Glen | Mosport | Brands Hatch | Hocke nheim | Valle lunga | ||||||
| Team | 24h | 6h | 6h | 1000km | 6h | 6h | 6h | 6h | 6h | |||||
| Valvoline Racing | #92, dns | |||||||||||||
| Karl-Friedrich Hunold/ Werner Muschak/ Hermann Molitor | #96, dnt qualify | |||||||||||||
| Statistics | ||||||||||||||
| Works Starts/finishes 2/0 | 2/0 | |||||||||||||
| Driver | Team entries and car number | |||||||||||||
| Valvoline Racing | ||||||||||||||
| Josef Wilhelmy | 92 | |||||||||||||
| Udo Piesack | 92 | |||||||||||||
Results in WRC
Works team: Opel Euro Händler Team
Season
Group 4 entries
Group 4 entries
| Entry | Rally event | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | M.C | SVE | KEN | GRE | MAR | POR | FIN | S.R | TdC | RAC | ||||
| Walter Röhrl Jochen Berger |
works | prop shaft | trans mission | ||||||||||||
| Rauno Aaltonen Claes Billstam |
works | gear box | |||||||||||||
| Anders Kulläng Claes-Göran Andersson |
works | piston | |||||||||||||
| Henri Greder 'Celigny' |
Greder Racing | 10th | |||||||||||||
| Tony Pond David Richards |
Dealer Team Opel | 4th | |||||||||||||
| Ian Wilson Peter Anderson |
dnf | ||||||||||||||
| Total points () |
8 | 1 | 7 | ||||||||||||
| Statistics | |||||||||||||||
| Works starts/finishes | 4/0 | 1/0 | 3/0 | ||||||||||||
| Others starts/finishes | 3/2 | 1/1 | 2/1 | ||||||||||||
Article from 4T 82, 7/1977
SourceSafari '76
SourceAngelo Presotto San Remo '77
Source16V
Source
Drawings
Source
Source
Gearbox
Source
page revision: 330, last edited: 14 Nov 2019 19:04