The Peugeot 908 is a 5,481 cc, V12 naturally aspirated petrol engine developed exclusively for endurance racing between 2007 and 2011. It features a DOHC 48‑valve layout, dry‑sump lubrication, and sequential fuel injection. In race trim it delivered approximately 475 kW (650 PS) at 8,000 rpm, with torque exceeding 650 Nm, engineered for high — revving performance and thermal stability under Le Mans conditions.
Fitted solely to the Peugeot 908 HDi FAP prototype race car (…
This engine was not type-approved for road use and carries no VCA or EU emissions certification. It was built exclusively for motorsport under FIA/ACO Appendix J regulations.
The Peugeot 908 is a 5,481 cc V12 naturally aspirated petrol engine engineered for Le Mans Prototype (LMP1) competition (2007–2011). It combines a 90° V-angle with dry-sump lubrication and high-revving DOHC architecture to deliver exceptional power density and thermal resilience. Designed without road emissions constraints, it prioritizes peak performance, mechanical robustness, and fuel efficiency within race regulations.
| Parameter | Value | Source |
|---|---|---|
Displacement | 5,481 cc | |
Fuel type | Petrol (102 RON race fuel) | |
Configuration | V12, DOHC, 48‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 78.8 mm | |
Power output | 475 kW (650 PS) @ 8,000 rpm | |
Torque | 650 Nm @ 6,500 rpm | |
Fuel system | Sequential multi-point injection (Magneti Marelli) | |
Emissions standard | Not applicable (competition-only) | |
Compression ratio | 13.0:1 | |
Cooling system | Water‑cooled with dual radiators | |
Turbocharger | None | |
Timing system | Chain-driven dual overhead camshafts | |
Oil type | Motul 300V Competition 10W‑60 | |
Dry weight | 210 kg |
The Peugeot 908 V12 petrol engine was used exclusively in the Peugeot 908 Le Mans Prototype race car with mid-rear longitudinal mounting and no road-going variants. This engine received iterative updates—revised coolant jackets in 2009 and upgraded main bearings in 2010—but remained mechanically consistent across its competition life. No licensing partnerships existed; all units were built in-house by Peugeot Sport. All adaptations are documented in OEM technical bulletins.
The 908 V12's primary operational risk is thermal fatigue in cylinder heads under sustained high load, with elevated incidence during 24-hour endurance events. Peugeot Sport internal telemetry from Le Mans 2009 indicated localized head temperatures exceeding 280 °C, while post-race teardowns revealed micro-cracking in exhaust ports on 30% of units. Extended full-throttle operation without adequate coolant flow increases risk, making pre-race system validation critical.
Analysis derived from Peugeot Sport technical bulletins (2007–2011) and FIA post-race inspection reports (2008–2011). Repair procedures should follow manufacturer guidelines.
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Within its intended motorsport context, yes. The 908 V12 was engineered for 1,500–2,000 km service life per rebuild, with high reliability over 24-hour races when maintained per Peugeot Sport protocols. It is not designed for daily use or longevity beyond competition cycles. Post-2009 revisions improved head and bearing durability significantly.
Top issues include cylinder head thermal cracking, dry-sump oil pump cavitation, valve spring surge at high rpm, and main bearing wear under extreme loads. These are documented in Peugeot Sport Technical Bulletins and FIA inspection logs. All are manageable with strict adherence to race maintenance schedules.
Exclusively the Peugeot 908 LMP1 prototype race car (2007–2011). This engine was never installed in any road vehicle. A diesel variant (908 HDi FAP) existed, but the petrol V12 was a separate competition-only development with no public sale or homologation.
Marginally. The engine already operates near material limits. Minor gains (+10–15 kW) are possible via revised cam profiles or exhaust tuning, but reliability drops sharply. Peugeot Sport capped output at 650 PS to balance performance with 24-hour durability. Significant tuning is impractical without full engine redesign.
Not applicable in conventional terms. Under FIA fuel-flow restrictions, it consumed approximately 35–40 L/100km during Le Mans racing—roughly 7 mpg UK. This is typical for high-output LMP1 engines and reflects race strategy, not efficiency.
Yes. Like all high-performance DOHC engines, it is an interference design. Valve float or timing chain failure at high rpm can cause catastrophic piston-valve collision. However, in race use, timing chains are replaced every 1,000 km, minimizing this risk.
Peugeot Sport specifies Motul 300V Competition 10W‑60 or equivalent full-synthetic race oil. Standard passenger-car oils lack the thermal stability and shear resistance required. Oil is changed after every race session or every 500 km during testing.
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