Porsche Motorsport

• Porsche Motorsport
• 2013 Porsche 911 GT3 Cup

The new 2013 Porsche 911 GT3 Cup is based on the Porsche 911 series production model – a pure-bred sports car that offers an exceptional level of power and yet our engineers were able to raise it even further. How? By fighting hard for every kilogramme saved and every kilowatt added. Thanks to the weight-optimised modular racing exhaust system, the 3.8-litre flat-six engine of the new Porsche 911 GT3 Cup now produces 338 kW (460 hp). The power of the engine is transmitted to the rear axle by a racing clutch and a newly developed Porsche six-speed sequential gearbox with mechanical slip differential. The electropneumatic paddle shift system makes gear changes even faster and more efficient.

The Porsche 911 GT3 Cup is also quicker to decelerate. Fit for endurance the newly developed race brake system performs impressively and will impress rival drivers, who can now be overtaken under braking even more frequently. The stability needed is provided by the extended wheelbase – 100 mm longer than that of the predecessor – as well as the optimised chassis.

Our motor racing history gives us an obligation to strive, not only for the next victory, but also for perfection. With the new 2013 Porsche 911 GT3 Cup, we are drawing ever closer to our goal. It remains to be seen whether our dream of creating the best race car in the world ever comes true; but one thing is certain – we have once again reinterpreted our vision of one of the most successful race cars ever

With over 2,300 sold, the Porsche 911 GT3 Cup is the undisputed number one among Porsche motorsport teams. The car competes in prestigious racing events around the globe, including various Porsche Carrera Cups, the GT3 Cup Challenges and the Porsche Mobil 1 Supercup. It also lines up in various GT racing series and endurance races.

Why? Because the Porsche 911 GT3 Cup has got what it takes. Specifically, we’re referring to a powerful yet extremely efficient engine and a sequential gearbox; the results of considerable development effort. Then there is the bodyshell construction which is based for the first time on a combination of aluminium and steel and boasts improvements not only in aerodynamics but also in safety – another of our primary obligations.

2013 Porsche 911 GT3 Cup Engine

• Aluminium six-cylinder rear-mounted boxer engine
• 3,800 cc; stroke 76.4 mm; bore 102.7 mm
• Max. power: 338 kW (460 hp) at 7,500 rpm
• Max. rpm: 8,500 rpm
• Single-mass flywheel
• Water cooling with heat management for engine and gearbox
• Four valves per cylinder
• Sequential multi-point fuel injection
• Required fuel quality: minimum 98 octane ROZ, unleaded
• Dry-sump lubrication
• Electronic engine management (Bosch MS 4.6)
• Race exhaust system with regulated race catalytic converter
• Twin-branched muffler with centred exhaust pipes
• Electronic acceleration pedal

2013 Porsche 911 GT3 Cup Gearbox

• Porsche six-speed sequential dog-type gearbox
• Gear ratios:
  – Ring & pinion gear 14/22 i = 1.571
  – Final drive 17/41 i = 2.412
  – 1st gear 13/41 i = 3.154
  – 2nd gear 17/40 i = 2.353
  – 3rd gear 19/36 i = 1.895
  – 4th gear 19/29 i = 1.526
  – 5th gear 24/30 i = 1.250
  – 6th gear 34/35 i = 1.029

• Internal pressure-oil lubrication with active oil cooling
• Limited slip differential
• Triple-disc sintered metal race clutch
• Pneumatic paddle shift system

2013 Porsche 911 GT3 Cup Brake system

Two independent brake circuits for front and rear axle, adjustable by the driver via brake balance system

Front axle internally vented and slotted:

• Aluminium six-piston racing callipers in monobloc design
• Multipiece steel brake discs; internally vented and sloted, 380 mm diameter
• Racing brake pads
• Optimised ventilation routing

Rear axle internally vented and slotted:

• Aluminium four-piston racing callipers in monobloc design
• Multipiece steel brake discs; internally vented and sloted, 380 mm diameter
• Racing brake pads
• Optimised ventilation routing

2013 Porsche 911 GT3 Cup Electricity

• COSWORTH ICD colour display
• COSWORTH electrical system control unit IPS32
• Drive-by-wire system
• Fire extinguishing system (extinguishing agent: gas)
• Battery 12 V, 70 Ah (AGM), leakproof, placed in the co-driver footwell
• Alternator 90A
• Weight optimised fan
• Wiper with direct drive
• Lighting system:
  – Bi-xenon-headlight
  – LED daytime running light
  – LED rear lighting system and rain light

2013 Porsche 911 GT3 Cup Chassis

Front axle:

• McPherson suspension strut, adjustable in height, wheel camber and track
• Forged strut:
  – Optimised stiffness
  – Two-shear connection
  – Heavy-duty spherical bearings

• Wheel hub with centre lock
• Racing shock absorbers, non-adjustable
• Forged supporting mount
• Double-blade-type anti-roll bar
• Power steering with electrohydraulic pressure feed

 2013 Porsche 911 GT3 Cup Rims/Tyres

Front axle:

• Single-piece Porsche Design light-alloy rims with centre lock, 10.5J x 18
• Michelin rain tyres; tyre size: 27/65-18

Rear axle:

• Single-piece Porsche Design light-alloy rims with centre lock,
  12J x 18
• Michelin rain tyres; tyre size: 31/71-18

2013 Porsche 911 GT3 Cup Bodywork

• Lightweight bodywork with smart aluminium-steel composite construction
• Welded-in roll cage
• Front bonnet with air inlets for cockpit ventilation and quick fasteners
• Modified and widened fenders
• Widened rear wheel arches
• Modified and widened 911 GT3 front-end fender with spoiler lip
• Modified 911 GT3 rear fender with integrated rain light
• Lightweight exterior equipment:
  – CRP doors with sport-design rear-view mirrors
  – CRP rear lid with ram-air box and quick fastener
  – CRP rear wing with Gurney Flap; adjustable
  – PC windows and rear side windows with ventilation openings
  – PC rear window

• Underbody tray with air routing for brake- and driveshaft cooling on the rear
• Modified 911 cockpit:
  – Weight-optimised magnesium subframe
  – Ergonomic driver-oriented centre console
  – Switch mask with fluorescent lettering

• Steering wheel with control panel and shift paddles
• Race bucket seat with longitudinal adjustment; homologatet to latest FIA requirements
• Individual Padding System
• Six-point seat belt
• 100 litre fuel cell (FT3 safety fuel cell)
• Built-in air jack system (three legs)

2013 Porsche 911 GT3 Cup Cocpit

How is success achieved? By a show of strength, but only when this is combined with independent thought and actions. Take aluminium and steel, for example. Both materials have been used in the new 911 GT3 Cup for the first time to form a complete bodyshell. New measures have been coupled with new standards. The integral two-mount rescue device, for instance, enables faster vehicle rescue, which also reduces the risk of further damage. This is combined with a newly developed rescue hatch for the occupants to be extracted safely from the vehicle.

Our objective was to develop the best working environment possible for the most important factor in motorsport – the driver. The cockpit of the 911 GT3 Cup has therefore been refined, both functionally and formally. After all, ergonomics plays a crucial role in motor racing, too. It is a principle exemplified by a new generation of seats with fore/aft adjustment which meet all current FIA requirements, and by the racing steering wheel, which adjusts for height and reach. The most important functions are assigned to switches and are intuitive to select: from the windscreen wipers, main beam, communications radio, power locking and alarm reset to neutral and reverse gear. The switch panel on the steering wheel has a matt carbon-weave finish.

 2013 Porsche 911 GT3 Gallery

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[source: porsche.co.uk]