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2009 GT3 RSR specfications
Concept
Porsche 911 GT3 RSR
single-seated GT race vehicle.
in accordance with the current A.C.O. LMGT2 Regulations and the FIA Article
257 (Technical Regulations for Series Grand Touring Cars).
basis: Porsche 911 GT3 RS (997; street legal version), homologated from January
2009 onwards.
Engine
Water-cooled, six-cylinder boxer
engine; four valves
per cylinder; dry sump lubrication; individual throttle
butterflies; fuel injection; air restrictors 2 x 29.5 mm.
Bore: 102.7 mm
Stroke: 80.4 mm
Capacity: 3,996 cc
Power output: 331 kW (450 bhp) at 7,800 rpm
Max. Torque: 430 Nm at 7,250 rpm. Max. revs: 9,400 rpm
Power Train
Six-speed gearbox with sequential jaw-type shift
oil/water heat exchanger
single-mass flywheel
hydraulic disengagement lever
three-plate carbon-fibre clutch
limited-slip differential 45/65 %
rear-wheel drive
Bodywork
Monocoque body (997 GT3 RS) of
hot-galvanised steel;
aerodynamically optimised front end with front spoiler;
aerodynamically optimised front underfloor; adjustable
rear wing; 90-litre safety fuel tank with fast filling function;
air jack; welded-in safety cage; bucket-type racing seat
(on driver's side only) with flame-resistant seat cover;
six-point seat belt adapted for use of the HANS
Head and Neck Support; electric fire-extinguishing system.
Vehicle Weight
approx. 1,220 kg complying with
A.C.O. regulations,
approx. 1,245 kg complying with FIA regulations.
Suspension
Front:
McPherson spring strut axle; Sachs four-way gas
pressure dampers; double coil springs (main and ancillary
spring); front axle arms adjustable for camber; adjustable
sword-type anti-roll bar on both sides; power steering.
Rear:
Multi-arm axle with rigidly mounted axle sub-frame;
Sachs four-way gas pressure dampers; double coil springs
(main and auxiliary spring); rear axle tie-bar reinforced
and infinitely adjustable; adjustable sword-type anti-roll
bar on both sides.
Rims/Tires
Front:
Three-piece BBS light-alloy wheels (11J x 18-34);
central bolt;
Rear:
Three-piece BBS light-alloy wheels (13J x 18-12.5);
central bolt.
Brake System
Brake system with balance bar control.
Front:
Single-piece six-piston aluminium fixed callipers;
inner-vented, 380 mm in diameter; racing brake pads.
Rear: Single-piece four-piston aluminium fixed callipers;
inner-vented, 355 mm in diameter; racing brake pads.
Electrics
Motec display with integrated data
recording; multi-function display with integrated gearshift indicator; adjustable
traction control;
battery: 12 volt, 50 Ah, 140 Ah alternator.
Background
The successful Porsche 911 GT3 RSR takes off into the new model year with
extensive modifications. The most powerful race car based on the Porsche 911,
which last season secured wins in the American Le Mans Series and at the Nürburgring
24 Hours, competes in the GT2 class at international long distance races.
The most distinguishing feature of the new GT3 RSR is the redesigned front
with large air outlets on the front hood. Under the light-weight bodyshell,
as well, major changes were made to the quickest 911.
Noticeable at first sight are the air outlet slots, or the so-called louvers,
on the front hood: an indication of the completely redesigned air ducting
of the radiators, which became necessary through the new design of supply
and discharge air with the installation of an optional air-conditioning unit.
The aerodynamics under the rear underwent further optimisation. The rear wing
now features a wider adjustment range. The weight-optimised brake system and
the lighter wiring harness contribute to further improved handling, compared
to the predecessor model.
The capacity of the well-known six-cylinder boxer engine increased from 3.8
to 4.0-litres. After another reduction in the size of the air restrictors
for the 2009 season, the engine now delivers around 450 hp (331 kW) at 7,800
revs per minute and develops a maximum torque of 430 Nm at 7,250 rpm. The
rev limiter of the efficient six-cylinder unit kicks in at 9,000 rpm. Compared
to the forerunner, the rev level for a given power output was significantly
lowered. Thanks to this, the engine features an optimised torque curve and
offers better driveability.
In the cockpit, a new multi-function display located above the dashboard indicates
the optimum moment to change gears. Another new feature is the programmable
multi-function, onboard supply system control device, giving teams the choice
of many individual functions. One of these is the infinitely adjustable blinking
frequency of the lights in the front apron, which helps to immediately recognise
race cars when they enter the pits in the dark. For easier servicing under
race conditions, other modifications were made. The GT3 RSR now features a
new air-jack system with overpressure valve. The oil refill 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 race car based on the Porsche 911 offered by Porsche Motorsport. About 20 of the successful long distance racers have been built in Weissach and are now being delivered to customer teams around the world. The GT3 RSR costs 380,000 Euro plus VAT specific to each country.
Notable Victories
Winner American Le Mans Series (GT2
class)
Winner Le Mans Series (GT2 class)
Winner FIA GT Championship (GT2 class)
1st place Nurburgring 24 Hours (overall win)
