2008
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New 420 bhp Porsche 911 GT3 CupStuttgart. The new Porsche 911 GT3 Cup is entering the 2008 motorsport season with engine output increased to 420 bhp. The car will be raced in the Porsche Mobil1 Supercup, the world’s fastest international brand trophy, and worldwide in national Porsche Carrera Cups and GT3 Cup Challenges.
Specifications Power Unit
Body Monocoque body made of hot-galvanised steel; aerodynamically optimised front end with front spoiler; doors with side frames made of CFP and reinforced plastic door panels; rear lid with adjustable rear wing made of CFP; rear body panels made of CFP; air jack; welded-in rollcage; 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; 90-litre fuel tank; safety bar holding the battery in position. Chassis and Suspension Front: McPherson spring strut axle; Sachs gas pressure dampers; double coil springs (main and ancillary spring); front axle arms adjustable for camber; adjustable sword-type anti-roll bar; reinforced front axle crossbar with six-point fastening and double clamping; power steering with electrohydraulic pressure supply. Rear: Multi-arm axle with rigidly mounted axle subframe; Sachs gas pressure dampers; double coil springs (main and ancillary spring); rear axle track arm adjustable for camber; rear axle tiebar reinforced and infinitely adjustable; adjustable sword-type anti-roll bar. Complete suspension infinitely adjustable (height, camber, track). Brakes Brake system with balance bar control. Front: Single-piece six-piston aluminium fixed callipers; Porsche Ceramic Composite Brakes (PCCB), inner-vented, 380 mm (14.96") in diameter; racing brake pads. Rear: Single-piece four-piston aluminium fixed callipers; Porsche Ceramic Composite Brakes (PCCB), inner-vented, 350 mm (13.78") in diameter; racing brake pads. Wheels/Tyres Front: Three-piece BBS light-alloy wheels (9J x 18); ET 43 with central locking; Michelin rain tyres (24/64-18). Rear: Three-piece BBS light-alloy wheels (11J x 18); ET 30 with central locking; Michelin rain tyres (27/68-18). Electrical System Motec display with integrated data recording; battery: 12 volt, 50 Ah, 90 Ah alternator. Weight Approx 1,150 kg (1,130 kg with PCCB).
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265 units of this production-based racing car developed in
Weissach will be built on Porsche’s production line in
Stuttgart-Zuffenhausen, marking a new record for a car of this category.
The most significant modification compared with last year’s model is
the new rear end following the design of the production model. Air venting
slits ensure better dissipation of heat at the rear. The 3.6-litre six-cylinder
boxer engine developed in Weissach is also based on the street-legal GT3
and develops maximum output of 420 bhp, 20 horsepower more than on the previous
model. The sequential six-speed transmission with interruption of engine
power enables the driver to shift up under full throttle without disengaging
the clutch. The transmission itself has been optimised and the gear ratios
adjusted to the characteristics of the engine. Weighing 1,150 kg in race
trim, the new 911 GT3 Cup has a power-to-weight ratio of 2.7 kg per horsepower.
The 26 units of the 911 GT3 Cup built for the Porsche Mobil1 Supercup feature
a special exhaust system with an even more striking sound pattern reminiscent
of the Formula 1 racing scene as well as PCCB Porsche Ceramic Composite Brakes
as exclusive highlights. Compared with conventional brake discs, PCCB reduces
unsprung masses by 20 kg and sets new standards in terms of responsiveness,
resistance to fading, and a long service life. The racing cars entered worldwide
in the Carrera Cup feature a modified exhaust system and steel brake discs.
Porsche’s Racing Department in Weissach is responsible for the fine-tuning
and running in the 911 GT3 Cup cars. Deliveries will be directly from Weissach,
depending on the country of destination and the schedules to be observed.
While the cars for the Carrera Cup New Zealand have already been shipped,
delivery of the racing cars for the Porsche Mobil1 Supercup and the Carrera
Cup Germany is scheduled for early March 2008.
Water-cooled six-cylinder boxer; 3,598 cc; stroke 76.4 mm (3.01");
bore 99.98 mm (3.94"); max output 420 bhp (309 kW); max torque 420 Nm (310
lb-ft); max engine speed 8,400 rpm; four-valve technology; dry sump lubrication;
two-stage resonance intake distributor; central air intake; electronic MS
3.1 engine management; fuel injection (multi-point, sequential); fuel grade
98 RON premium plus unleaded; racing exhaust with fully controlled catalytic
converter (400 cells); rear silencer with centrally mounted double tailpipe;
special exhaust tailpipes for the Porsche Mobil1 Supercup.
