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CITROEN C4 WRC HYmotion4
Acropolis 2009, Sebastian Loeb: see video
Sebastian Loeb in snow: see video
On board with Sebastian Loeb in Monte Carlo 2007 (SS4): see video
Specifications
20 units builtClick here
| Group/Class | A/8 | Homologation number: A 5702 (01/01 WR, 14/02 WR and 24/03 WR) |
| Years active | 2007 - 2010 | Homologation start: 1/1/2007 Homologation end: 31/12/2016 |
| Engine | ||
|---|---|---|
| Type | PSA XU7JP4 straight 4cyl, 4 stroke, petrol engine | located front transverse |
| Capacity | 1998 cc | WRC: x 1.7 = 3396.6 cc |
| Bore x Stroke (mm) | 85.5 x 87.0 | |
| Compression ratio | 9.0:1 | |
| Output power - torgue | 315 HP / 5500 rpm | 58.0 kgm (569 Nm) / 2750 rpm |
| Main bearings | 5 | |
| Materials | block: aluminium alloy, 93mm bore spacing | cylinderhead: aluminium alloy |
| Cams/valves | dual overerhead camshaft (DOHC), belt driven with Variable Valve Timing | 4 valves/1cyl. - 16 valves |
| Aspiration | Garrett/Allied Signal TR30R watercooled turbocharger (see below) with 34mm turbo restrictor and catalytic converter fitted, Magnetti Marelli ECB11 electronic fuel MPI | |
| Ignition | Magnetti Marelli ECB11 electronic, firing order 1-3-4-2 | |
| Cooling system | watercooled | |
| Lubrication system | oil cooler | |
| Transmission | ||
| Type | four wheel drive | 6-speed sequential, with steering wheel mounted paddles. |
| Gearbox ratios | 1st: /1 2nd: /1 3rd: /1 4th: /1 5th: /1 6th: /1 |
|
| Diffrential ratio | /1 | active/hydro-electronically controlled center differential. Limited slip front and rear differentials. 50%-50% F-R torque distribution |
| Clutch | dry carbon triple disk | |
| Chassis-body | ||
| Type | steel monocoque C4 chassis of PSA PF2 platform with roll-cage. 3 door coupe bodyshell | |
| Front suspension | mac pherson strut with lower wishbone, coil springs, Exe-TC telescopic gas shock absorbers, antiroll bar, electronically adjustable | |
| Rear suspension | mac pherson strut with lower wishbone, coil springs, Exe-TC telescopic gas shock absorbers, antiroll bar, electronically adjustable | |
| Steering system | rack and pinion power assisted | |
| Brakes | ventilated disks front/rear, tarmac: 6 piston calipers all around gravel: 4 piston calipers all around |
dual circuit with servo |
| Dimensions | ||
| length: 4.274 m (168.3 in) | width: 1.800 m (70.9 in) | height: 1.400 m (55.1 in) |
| wheelbase: 2.608 m (102.7 in) | front track: 1.598 m (62.9 in) | rear track: 1.598 m (62.9 in) |
| Rims - tires | tarmac: 8" x 18", gravel: 7" x 15" | Goodrich Asphalt BF tyres: 225/40-18, Goodrich Gravel BF tyres: 215/65-15 |
| Weight | 1230 kg | |
| Weight/power | 4.1 kg/HP | |
| Fuel tank | ||
Garrett TR30R Turbocharger features
T25 type ball bearing cartridge.
The bearing races are made from M50 material and the retainer from silicon-bronze for high temperature capability.
An air-cooled center housing with turbo speed pickup boss.
Thin wall stainless steel turbine housing with V-Band inlet and outlet and attached with a V-Band.
The turbine housing is shielded with an activated carbon cloth heat shield.
Mar-M 247 turbine wheel material is good up to 1050C/1922F turbine inlet temperature.
The compressor housing is attached to a standard back plate with a V-Band.
Billet 5-axis machined aluminum compressor wheel.
Homologation extensions
Homologation number: A 5702
Debut d'Homol. 01.12.2006
Fin : 2015
Results in WRC
Statistics
| 2007 | 2008 | 2009 | 2010 | Total | |||||||
| Works | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Races/wins | 16/8 | 15/11 | 12/7 | 13/8 | 56/34 | ||||||
| Entries/finishes | 32/28 | 30/27 | 25/24 | 26/25 | 113/104 (92%) | ||||||
| Others | |||||||||||
| Races/wins | /2 | /2 | |||||||||
| Entries/finishes | 24/18 | 35/21 | 38/32 | 97/71 (73.2%) | |||||||
| Total WRC results | |||||||||||
| Races/wins | 16/8 | 15/11 | 12/7 | 13/10 | 56/36 | ||||||
| Entries/finishes | 32/28 | 55/45 | 59/45 | 64/57 | 210/175 (83.3%) | ||||||
| Total points | 206 | 244 | 260 | 393 | 1103 (19.696 per race) (5.252 per entry) |
||||||
Races
Works team: Citroën Total W.R.T.
| Entry | Rally event | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Driver Codriver |
Team | MON | SVE | NOR | MEX | POR | ARG | ITA | GRE | FIN | DE | N.Z | ESP | TdC | JAP | IR | GB | |
| Sébastien Loeb Daniel Elena 5 |
works | 1st | 1st | 2nd | 1st | 1st | 1st | 1st | ||||||||||
| Sébastien Loeb Daniel Elena 7 |
works | 2nd | 14th | wheel | 2nd | oil pres sure | ||||||||||||
| Sébastien Loeb Daniel Elena 9 |
works | 1st | 1st | 3rd | 3rd | |||||||||||||
| Daniel Sordo Marc Martí 6 |
works | 2nd | 3rd | dnf | 2nd | 3rd | 2nd | |||||||||||
| Daniel Sordo Marc Martí 10 |
works | 12th | 25th | 3rd | 24th | 6th | 2nd | |||||||||||
| Daniel Sordo Marc Martí 11 |
works | 4th | 6th | eng ine | 5th | |||||||||||||
| Total points (2nd) |
206 | 19 | 9 | 17 | 18 | 15 | 8 | 9 | 8 | 10 | 14 | 19 | 18 | 9 | 19 | 14 | ||
| Statistics | ||||||||||||||||||
| Others Starts/finishes | 32/28 | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 | 2/2 | 2/1 | 2/2 | 2/1 | 2/1 | 2/2 | 2/2 | 2/2 | 2/1 | 2/2 | 2/2 | |
Information and articles
Article from 4T 469, 10/2009
SourceCitroen C4 WRC 2007
Source
Drawings
