[bbvideo=560,315]https://vimeo.com/127918688[/bbvideo]Sergiu Tudose wrote:This massive-winged, ultra-lightweight 911 GT3 R has been designed by Porsche as a customer race car for the GT3 series.
Porsche focused on cutting the weight down and improving the aerodynamics of the GT3 RS (on which this R version is based on). They also improved the handling, reduced fuel consumption and lowered the service and spare parts costs if you can believe it!
Even the wheelbase has been stretched out by 8.3 cm (3.2 inches) which leads to a better balanced weight distribution and more predictable handling - especially in fast corners, compared to the previous GT3 R.
Powering the new 911 GT3 R is a 4.0 liter flat-six unit which is largely identical to the production engine of the road-legal GT3 RS, however the 'R' does use a little over 500 HP. By all accounts, at just 1,220 kg (2,689 lbs) in weight, this should and most definitely will be an extremely fast race car.
The rear wheels help the GT3 R put all its power down through a sequential 6-speed constant-mesh gearbox while the fact that the engine is naturally-aspirated helps the driver use the rev range more efficiently.
Further modifications went towards improving the brake system through increased ABS precision and six-piston aluminum monobloc racing calipers in the front (380 mm discs) and four-piston calipers at the rear (372 mm discs).
Safety-wise, the fuel tank (120 liters) now has a fuel cut-off safety valve while the escape hatch in the roof is larger. Though the thought of losing control of such a car seems almost absurd, especially with that massive rear wing.
The wing measures no fewer than 2 meters (78 inches) in width by 40 cm (15 inches) in depth. By all accounts, that is one big wing, and the downforce it generates should keep the 911 GT3 R glued to the racetrack.
Deliveries for the Porsche 911 GT3 R start in December, as for the price tag, it's pretty hefty at €429,000, plus country-specific VAT.
http://www.carscoops.com/2015/05/porsch ... gt3-r.html
Ultimatecarpage's spec sheet:Porsche's press release writer wrote:Based on the 911 GT3 RS production sports car, Porsche has designed a customer sport race car for GT3 series around the world: The 911 GT3 R. In developing the more than 368 kW (500 hp) racing nine-eleven, special attention was paid to lightweight design, better aerodynamic efficiency, reducing consumption, improved handling, further optimised safety as well as lowering service and spare parts costs.
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.
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.
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.
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.
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.
