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Porsche - 911 GT3 R (991) -

911 GT3 R (991)

Technical Specs

Porsche 911 GT3 R - Technical Specs
Length: 4604 mm Height: 1232 mm
 
Engine layout Water cooled six-cylinder Boxer engine (rear mounted)
Power 368 kW (500 hp)
Power transmission Porsche six-speed constant-mesh gearbox (sequential)
Brake system Six-piston aluminum-monobloc racing brake caliper at front, Four-piston aluminum-monobloc racing brake caliper at rear
Steering McPherson strut at front, Multilink independent suspension at rear, adjustable motorsport dampers, anti-roll bar
Safety Safety Welded-in roll cage, FT3 safety fuel tank, fire extinguishing system

Highlights

Porsche - The powertrain

The powertrain

Porsche - The powertrain

The powertrain

Powering the new 911 GT3 R is a cutting-edge four-litre flat-six unit which is largely identical to the high-performance production engine of the road-legal 911 GT3 RS. Direct petrol injection, which operates at pressures up to 200 bar, as well as variable valve timing technology ensure a particularly efficient use of fuel. Moreover, the normally-aspirated engine offers significantly better driveability and a broader usable rev range. Power from the rear engine is transferred to the 310 mm rear wheels via a Porsche sequential six-speed constant-mesh gearbox. As in the GT road-going models of the 911, the driver changes gears via shift paddles conveniently positioned on the steering wheel.

Engine:
- Water-cooled six-cylinder boxer engine (rear mounted)
- 4,000 cm3; stroke 81.5 mm; bore 102 mm
- Output: over 368 kW (500 hp) subject to FIA BoP (air restrictor)
- Four-valve technology
- Direct fuel injection
- Dry sump lubrication

Porsche - The brakes

The brakes

Porsche - The brakes

The brakes

The brake system of the 911 GT3 R also underwent further modifications and, thanks to increased stiffness and more precise control of the ABS, is even better suited to long distance racing. At the front axle, six-piston aluminium monobloc racing brake callipers combined with ventilated and grooved steel brake discs with a diameter of 380 millimetres ensure outstanding braking performances. Fitted at the rear axle are four-piston callipers and discs measuring 372 millimetres.

Brake system:

Two separate brake circuits for front and rear axles; adjustable by driver via brake balance bar system.

Front axle:
- Six-piston aluminium monobloc racing brake calliper
- Ventilated and grooved steel brake disc, D = 380 mm, aluminium disc bell

Rear axle:
- Four-piston aluminium monobloc racing brake calliper
- Ventilated and grooved steel brake disc, D = 372 mm, aluminium disc bell

Porsche - The chassis

The chassis

Porsche - The chassis

The chassis

Adopted from its production sibling, the 911 GT3 R features the distinctive double-bubble roof, and the wheelbase which had been lengthened by 8.3 centimetres compared to the previous generation. This ensures a more balanced weight distribution and more predictable handling particularly in fast corners corners in comparison to the previous GT3 R. By applying systematic lightweight solutions for the body, add-on parts, and suspension, the engineers significantly optimised the centre of gravity position of the GT3 R compared to the predecessor model. The lightweight body design of the 911 GT3 RS production sports car featuring intelligent aluminium-steel composite construction has proven to be the ideal basis for the race car. The roof, front cover and fairing, wheel arches, doors, side and tail sections as well as the rear cover are made of particularly light carbon-fibre composite material (CFRP). All windows – and for the first time even the windscreen – consist of polycarbonate.

Suspension:

Front axle
- McPherson strut, adjustable in height, camber and toe
- Wheel hubs with centre-lock wheel nuts
- Adjustable anti-roll bar blades (left and right)
- Power-assisted steering with electro-hydraulic pressure feed

Rear axle:
- Multilink independent rear suspension, adjustable in height, camber, toe
- Wheel hubs with centre-lock wheel nuts
- Adjustable anti-roll bar blades (left and right)

Porsche - The safety

The safety

Porsche - The safety

The safety

Another development focus was on the safety features of the GT3 R. The capacity of the further-reinforced FT3 safety fuel cell was increased by twelve litres to now hold 120 litres, with the tank now featuring a fuel cut-off safety valve. The doors and the side windows can be removed, and the escape hatch in the roof is now larger. In the event of an accident, the new racing bucket seat offers pilots even better protection.

Porsche - The aerodynamics

The aerodynamics

Porsche - The aerodynamics

The aerodynamics

The aerodynamics of the 911 GT3 R also follows the example of the road car. The distinctive wheel arch air vents on the front fairings increase downforce at the front axle. Measuring two metres in width by 40-centimetres in depth, the rear wing lends aerodynamic balance. From its 911 RSR big brother, the GT3 R has adopted the concept of the centrally-positioned radiator. By eliminating the side radiators, the position of the centre of gravity was improved, the radiator is better protected against collision damage, and the venting of hot air through louvers in the front cover was enhanced.

360° view

Porsche - 360° view Porsche - 360° view

Details

911 GT3 R - Vehicle description (PDF; 2.1 MB)



Contact Racing Cars Sales:

Dr. Ing. h.c. F. Porsche AG
Motorsport Sales
Porschestraße 911
71287 Weissach
Germany

e-mail: motorsport@porsche.de
fax: + 49 (0)711 911 82920