Porsche GT3 Cup S Race Car
February 6, 2008 by Admin
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Porsche has released the official images and details of the new Porsche GT3 Cup S race car which is based on the road-going GT3 RS sportscar. The Weissach-developed and built GT3 Cup S was created exclusively for racing purposes and will race in international champion-ships in accordance with FIA GT3 regulations.
The 3.6-liter boxer engine planted in the car is identical to the power unit used in the Porsche Mobil1 Supercup and the international Carrera Cup championships. The GT3 Cup S produces additional 20 hp from the standard engine to now 440 hp (324 kW) at 8,000 rpm. Maximum torque is increase by 10 Nm to 430 Nm at 7,250 rpm. The power increase was made possible from the optimised engine electronics and a modified exhaust system.
At the exterior, the GT3 Cup S features wider wheel arches, 10.5 inch wide front rims, 12 inch rear wheels, an adjustable front-splitter that generates more downforce at the front axle and wider rear wing which is positioned higher than the Cup version to provide more downforce at the rear axle.
The suspension system for the Porsche GT3 Cup S race car has also been upgraded with several components taken from the more powerful GT3 RSR which races in the GT2 class at international long-distance championships. Apart from that, the braking system has been tuned to cope with the power increase whereby the rear brake discs were fitted with 355 mm disc.
The new GT3 Cup S is priced at 250,000 Euro plus national VAT and is scheduled for delivery to customer teams from April. Apart from that, Porsche also offers a kit to upgrade the 2007 Cup models to the GT3 Cup S standard.
The technical specifications of the Porsche GT3 Cup S from the press release are:
Power Unit
Water-cooled six-cylinder boxer; 3,598 cc; stroke 76.4 mm; bore 99.98 mm; max output 440 bhp (324 kW); max torque 430 Nm; 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.
Power Transmission
Six-speed gearbox with sequential jaw-type shift; compressed oil lubrication; oil/water heat exchanger; single-mass flywheel; hydraulic disengagement lever; 5.5-inch three-plate carbon-fibre clutch; limited-slip differential 40/60 %; rear-wheel drive.
Body
Monocoque body made of hot-galvanised steel; aerodynamically optimised front end with front spoiler; doors with side frames made of CFP and plastic wing mirrors; aerodynamically optimised front underfloor; adjustable rear wing; 100-litre safety fuel tank; 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.
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; power steering.
Rear: Multi-arm axle with rigidly mounted axle sub-frame; Sachs gas pressure dampers; double coil springs (main and ancillary spring); rear axle track arm adjustable for camber; rear axle tie-bar 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;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.
Wheels
Front: Three-piece BBS light-alloy wheels (10.5J x 18); central locking;
Rear: Three-piece BBS light-alloy wheels (12J x 18); central locking;
Electrical System
Motec display with integrated data recording; battery: 12 volt, 50 Ah, 140 Ah alternator.
Weight
Approx 1,170 kg
[...] The 6-speed gearbox mated to the engine was upgraded with lighter with less internal friction. Other racing car from Porsche Motorsport is the Porsche GT3 Cup S. [...]