Citroen CX2400 GTi group 2 (1977)
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Development chain 1970: Citroen DS21 1973: Citroen DS23 1974: Citroen CX2200 1977: Citroen CX2400 GTi |
Specifications
| Group/Class | 2 | Homologation number: 5642, 1687, 5688 and A5024 | |
| Years active | 1977-1980 | Homologation start: 1/1/1977, 1/7/1977, 1/1/1978 and 1/5/1982 Homologation end: 31/12/1981, 1/1/1978, 31/12/1981 and 31/12/1988 |
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| Engine | |||
|---|---|---|---|
| Type | straight 4cyl, 4 stroke | located front transverse, 30o forward inclined | |
| Capacity | 2347 cc | WRC: 2347 cc | |
| Bore x Stroke (mm) | 93.5 x 85.5 | ||
| Compression ratio | 8.75:1 | ||
| Output power - torgue | 185 HP / 5500 rpm | 24.7 kgm (242 Nm) / 3600 rpm | |
| Main bearings | forged steel crankshaft with 5 main bearings 64 mm diameter, big end bearings journal diameter 53.5mm | connecting rod length between centers 160 mm, big end bearing tunnel diameter 57.7mm, aluminium alloy piston with 64.1mm compression height | |
| Materials | block: cast iron | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers | |
| Cams/valves | overhead valves with pushrods and rockers (OHV), gear driven camshaft | 2 valves/cyl. - 8 valves total, 49mm inlet valve diameter, 39 mm exhaust valve diameter. 1 coil spring per valve | |
| Aspiration | natural, 1 x Weber 34DTMR35/250, 1687, GTi: Bosch L-Jetronic multipoint fuel injection | ||
| Ignition | electronic, firing order 1-3-4-2, 12V battery | ||
| Cooling system | jacketed watercooled with pump, radiator, 304 mm diameter-10 blades fan and thermostat | 10.6 lt, 7/1977: 12.3 lt | |
| Lubrication system | wet sump | 5.8 lt | |
| Transmission | |||
| Type | front wheel drive | 4 or 5 speed manual gearbox | |
| Gearbox ratios | 1st: 3.166/1 (38/12) 2nd: 1.833/1 (33/18) 3rd: 1.133/1 (34/30) 4th: 0.80/1 (28/35) R: 3.154/1 (41/13) |
7/1977: 1st: 3.166/1 (38/12) 2nd: 1.833/1 (33/18) 3rd: 1.25/1 (35/28) 4th: 0.939/1 (31/33) 5th: 0.733/1 (33/45) R: 3.154/1 (41/13) |
1982, group A: 1st: 2.846/1 (37/13) 2nd: 2.059/1 (35/17) 3rd: 1.625/1 (39/24) 4th: 1.25/1 (35/28) 5th: 1.032/1 (32/31) R: 3.154/1 (41/13) |
| Diffrential ratio | 4.77/1 (62/13), 1978: 4.357/1 (61/14), 5.167/1 (62/12). 1982: 4.538/1 (59/13) |
helical gears front differential | |
| Clutch | dry single disk 235 mm diameter | ||
| Chassis-body | |||
| Type | steel monocoque mounted on twin longeron main frame Citroen MA type MJ or ME (GTi) chassis with roll-cage. 4 door saloon steel bodyshell with steel bumbers | ||
| Front suspension | upper and lower transverse arms with anti-dive geometry, hydropneumatic spring/damper units, anti-roll bar | ||
| Rear suspension | trailing arms, hydropneumatic spring/damper units, anti-roll bar | ||
| Steering system | rack and pinion with hydraulic servo assistance | ratio 12.2/1, 4.5 turns lock to lock | |
| Brakes | front ventilated disks 260mm diameter with 2 aluminium piston calipers 42mm diameter, rear solid disks 234mm diameter with 2 aluminium piston calipers 30mm diameter | dual circuit with vacuum servo | |
| Dimensions | |||
| length: 4.661 m (183.5 in) | width: 1.734 m (68.3 in) | height: 1.360 m (53.5 in) | |
| wheelbase: 2.845 m (112.0 in) | front track: 1.474 m (58.0 in) | rear track: 1.360 m (53.5 in) | |
| Rims - tires | steel rims 5.5" x 14" | 185-HR14 tires, 185-HR15 | |
| Weight | 1240-1285 kg | ||
| Fuel tank | 70 lt | ||
Results in WRC
Races
Season
| Entry | Rally event | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | MC | SVE Entry list |
POR | KEN | S.P | GRE | FIN | CAN | S.R | TdC | RAC | ||||
| Jean-Paul Luc Michel Prud'homme |
6th | |||||||||||||||
| Mercier Marchioni |
21st | |||||||||||||||
| Total points () |
5 | 5 | ||||||||||||||
| Statistics | ||||||||||||||||
| Others starts/finishes | 2/2 | 1/1 | 1/1 | |||||||||||||
SourceJean-Pierre Nicolas in Acropolis rally '78
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Drawings
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Engine
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Chassis
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Rear and front suspension
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Hydropneumatic suspension system
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Steering system
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page revision: 60, last edited: 08 Oct 2019 03:39