The successful Porsche 911 GT3 RSR takes off into the new model year with extensive modifications. The most powerful racecar based on the Porsche 911, which last season secured wins in the American Le Mans Series and at the Nrburgring 24 Hours, competes in the GT2 class in international long distance races.
The most distinguishing feature of the new GT3 RSR is the re-designed nose with its large air outlets on the front panel. Further major changes were made to this quickest 911 beneath its lightweight bodyshell. Noticeable at first sight are the air outlets; louvers on the nose panel which would otherwise cover the luggage area on the road car. This is an indication of the completely re-designed air ducting for the radiators, which became necessary through the new design of supply and discharge air and the installation of an optional air-conditioning unit. The aerodynamics beneath the rear of the car also underwent further optimization. The rear wing also features a wider adjustment range. And the weight-optimized braking system, as well as the lighter wiring harness, contributes to further improved handling, compared to the prior model.
The capacity of the six-cylinder `boxer' engine has been increased from 3.8 to 4.0 liters. After another reduction in the size of the air restrictors for the 2009 season (as mandated by the governing body of world motorsport), the engine now delivers around 450hp at 7800rpm, and develops a maximum torque of 320 lb/ft at 7250rpm. The rev limiter kicks in at 9000rpm. Compared to its forerunner, the revs for a given power output has been significantly lowered, resulting in better driveability.
In the cockpit, a new multi-function display located above the dashboard indicates the optimum time to change gears. Another new feature is the programmable multi-function supply system control device, giving teams the choice of individual functions. One of these is the infinitely adjustable blinking frequency of the lights in the front apron, which helps to immediately recognize racecars when they enter the pits at night in endurance events.
For easier servicing under race conditions, other modifications were made. The GT3 RSR now features a new air-jack system with over-pressure valve. The oil re-fill with fast filling function has now moved to the rear lid, giving mechanics better access.
Aside from GT3 Cup and the GT3 Cup S, the GT3 RSR is the third racecar based on the Porsche 911 offered by Porsche Motorsport. About 20 of the successful long-distance racers have been built in Weissach, Germany and are now being delivered to customer teams around the world. The GT3 RSR costs 380,000 Euro plus taxes specific to each country; or about $500,000 at the current exchange rate.The new 911 GT3 RSR will make its world debut at Sebring International Raceway on January 26 as part of the three-day American Le Mans Series Winter test.