Porsche Unveils 2009 911 GT3 RSR with 4.0-Litre Engine
Porsche's 2009 911 GT3 RSR arrives with a larger 4.0-litre flat-six, revised aerodynamics and updated electronics for customer teams in GT2 endurance racing.
Porsche has launched the 2009 911 GT3 RSR, its most powerful 911-based race car to date, for customer teams contesting the GT2 class in international endurance series. The new RSR features a larger 4.0-litre flat-six engine, revised aerodynamics and a host of technical updates aimed at improving driveability and serviceability during long-distance events.
The most visible change for 2009 is the redesigned nose, with large air outlets integrated into the front panel to improve cooling and downforce. Under the lightweight shell, Porsche has increased engine displacement from 3.8 to 4.0 litres. Despite a reduction in air restrictor size mandated by the sport’s governing body, output stands at 450bhp (331kW) at 7,800rpm and 430Nm of torque at 7,250rpm. The rev limiter is set at 9,000rpm, but Porsche says the new engine delivers its power at lower revs than before, making it more tractable for drivers over long stints.
Technical upgrades for endurance racing
The 2009 GT3 RSR retains a steel monocoque based on the GT3 RS road car, but the front and underfloor aerodynamics have been further refined. The rear wing remains adjustable for different circuit requirements. Porsche has fitted a 90-litre safety fuel tank with a fast-filling system for quicker pit stops, and the oil refill point has been relocated to the rear lid for easier access during races.
Suspension is fully adjustable, with McPherson struts and four-way adjustable Sachs dampers at the front, and a multi-arm rear axle with reinforced tie-bars. Both axles feature double coil springs and adjustable anti-roll bars. Braking is handled by six-piston aluminium callipers and 380mm discs at the front, with four-piston callipers and 355mm discs at the rear. Central-locking BBS wheels measure 18 inches in diameter, with 11J width at the front and 13J at the rear.
Electronics and cockpit improvements
Inside, the cockpit gains a new multi-function display above the dashboard, giving drivers a gearshift indicator and other key data. Porsche has introduced a programmable on-board supply system, allowing teams to customise functions such as the frequency of the front apron lights, a feature aimed at improving pit lane identification during night racing. The air-jack system now includes an over-pressure valve, and the seat is fitted for use with the HANS head and neck support device.
Where the GT3 RSR fits in the Porsche range
The GT3 RSR sits above the GT3 Cup and GT3 Cup S as Porsche Motorsport’s top 911-based offering for privateer teams. Delivered from Weissach, the car is eligible for major endurance events including the American Le Mans Series and the Nürburgring 24 Hours. Its predecessor secured class wins in both series, and the 2009 updates are aimed at maintaining that competitive edge in the face of evolving GT2 regulations.
- Water-cooled 4.0-litre flat-six engine with dry sump lubrication
- Sequential six-speed gearbox with limited-slip differential
- Aerodynamically optimised steel monocoque body
- Fully adjustable suspension and anti-roll bars
- Advanced cockpit electronics and data logging
With only around 20 cars produced, the 2009 Porsche 911 GT3 RS R remains a rare and focused machine, built for teams seeking endurance success in GT2 competition. Later developments in the GT3 RSR line would continue to evolve, but in 2009 this model represented the pinnacle of Porsche’s customer racing technology.
