Citroen CX2400 GTi group 2 (1977)
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Home » Rally Cars » Citroen CX2400 GTi
citroen-cx-2400-gti-rally.jpg Source 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
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

6+rally1978b_clip_image016.jpg Source
Jean-Pierre Nicolas in Acropolis rally '78
1978-FranciscoRomozinho-CitronCX240.jpg Source
Francisco Romãozinho/José Bernardo in Portugal '78
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004.jpg Source
05.jpgSource
005.jpg Source
01.jpg 03.jpg Source
Rear and front suspension
04.jpg Source
Hydropneumatic suspension system
P264.GIF Source
Steering system

Drawings

010.jpg Source
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