Citroen DS23 group 2 (1973)
 Source |
Development chain 1970: Citroen DS21 1973: Citroen DS23 1974: Citroen CX2200 1977: Citroen CX2400 GTi |
DS 23 Serie FE (carburetor)
DS 23 Serie FG (injection)
Specifications
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Click here for street Electronic Fuel Injection version
Click here for street carburetor version
| Group/Class | 2 | Homologation number: 1644, 5512 and 1645, 5511 | |||
| Years active | 1973-1975 | Homologation start: group 2: 1/1/1973, group 1: 1/4/1973 Homologation end: group 2: 1/4/1973, group 1: 31/12/1979 |
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| Engine | |||||
|---|---|---|---|---|---|
| Type | Citroen DX4 (with carburetor), or DX5 (with injection), straight 4cyl, 4 stroke | located front longitudinal behind front axle | |||
| Capacity | 2347 cc | WRC: 2347 cc | |||
| Bore x Stroke (mm) | 93.5 x 85.5 | ||||
| Compression ratio | 8.75:1 | ||||
| Output power - torgue | 115 HP @ 5500 rpm inj: 130 HP @ 5250 rpm |
18.7 kgm @ 3500 rpm inj: 19.9 kgm @ 2500 rpm |
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| Main bearings | forged steel crankshaft with 5 main bearings 64 mm diameter, big end bearings journal diameter 53.5mm | steel connecting rod length between centers 160 mm, big end bearing tunnel diameter 57.7mm, aluminium alloy piston with 64.65 mm compression height | |||
| Materials | block: cast iron | cylinderhead: cross flow aluminium alloy with hemispherical combustion chambers | |||
| Cams/valves | overhead valves with pushrods and rockers (OHV), chain driven side camshaft | 2 valves/cyl. - 8 valves total. 49 mm inlet valve diameter, 39 mm exhaust valve diameter. 2 coil springs per valve | |||
| Aspiration | natural, DX4: x Weber 28/36 DMA4 or Weber 28/36 DM2 carburetor DX5: Bosch D-Jetronic multipoint fuel injection |
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| Ignition | electronic, firing order 1-3-4-2 | ||||
| Cooling system | jacketed watercooled with pump, radiator, 306 mm diameter-8 blades (or 260 mm diameter-11 blades) fan and thermostat | 13 lt | |||
| Lubrication system | wet sump | 5 lt | |||
| Transmission | |||||
| Type | front wheel drive | Citroen, 4 or 5 speed manual gearbox | |||
| Gearbox ratios | 1st: 3.25/1 (39/12) 2nd: 1.941/1 (33/17) 3rd: 1.321/1 (37/28) 4th: 0.969/1 (32/33) 5th: 0.784/1 (29/37) or 0.757/1 (28/37) R: 3.154/1 (41/22x22/13) |
1st: 3.25/1 (39/12) 2nd: 1.833/1 (33/18) 3rd: 1.207/1 (35/29) or 1.133/1 (34/30) 4th: 0.852/1 (23/27) or 0.786/1 (22/28) R: 3.154/1 (41/22x22/13) |
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| Diffrential ratio | 4.857/1 (34/7), 4.375/1 (35/8) | helical gears limited slip front differential | |||
| Clutch | dry single disc, 229 mm disc diameter | ||||
| Chassis-body | |||||
| Type | steel monocoque mounted on twin longeron main frame FE or FG 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 | 3.25 turns lock to lock | |||
| Brakes | front solid disks 300mm diameter with 2 piston calipers and 60 mm piston diameter, rear drums 255 mm diameter and 1 double piston caliper and 18mm piston diameter | dual circuit with servo, adjustable ratio split front to rear | |||
| Dimensions | |||||
| length: 4.874 m (191.9") | width: 1.803 m (71.0") | height: 1.470 m (57.9") | |||
| wheelbase: 3.125 m (123.0") | front track: 1.516 m (59.7) | rear track: 1.316 m (51.8) | |||
| Rims - tires | steel rims 5" or 5.5" x 15" | Michelin XAS 180 x 380 or 185-HR15 | |||
| Weight | 1260-1280 kg | front/rear distribution 65%-35% | |||
| Fuel tank | 65 lt | ||||
| Drag coefficient | 0.38 | ||||
Results in WRC
Races
Works team: Citroen S.A.
Season
| Entry | Rally event | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | M.C | SVE | POR | KEN | MAR | GRE | POL | FIN | A | S.R | USA | RAC Entry list |
TdC | |
| Bob Neyret Jacques Terramorsi |
works | 2nd | |||||||||||||
| Raymond Ponnelle Pierre de Serpos |
works | 4th* | |||||||||||||
| Jean Deschazeaux Jean Plassard |
works | 8th | |||||||||||||
| Richard Bochnicek Sepp-Dieter Kernmayer |
3rd* | 6th | oil leak | ||||||||||||
| Total points () |
32 | 27 | 5 | ||||||||||||
| Statistics | |||||||||||||||
| Others starts/finishes | 5/4 | 4/4 | 1/0 | ||||||||||||
*Group 1 entries
Drawings
Source
Source
SourceCitroen DS19 Hydropneumatic suspension
Source
page revision: 47, last edited: 16 Jan 2019 15:38