2015 Porsche 911 GT3 RS : Current Models
For all the headlines the Cayman GT4 – rightly – grabbed when it was revealed last month, this is the Porsche Motorsport GT car we’ve been waiting for: the 991 GT3 RS.
Building on a recipe that has resulted in nothing but success since 2003, Porsche’s latest RennSport 911 is set to deliver even more of those pure, undiluted driving thrills that only cars from company’s Motorsport department are capable of delivering.
Honed and developed by Andreas Preuninger and his team, the new 911 GT3 RS builds on what has gone before and, accordingly to Porsche, is 'equipped with the maximum degree of motorsport technology currently possible in a road legal 911'. In short, this is one of the most extreme Porsche RS road cars since the 1974 3.0 RS.
The hard numbers are 496bhp at 8250rpm and 340lb ft of torque delivered at 6250rpm from its 4-litre naturally aspirated direct fuel injected flat-six. The 0-62mph sprint is a claimed 3.3-seconds, with a 192mph maximum speed. As for its Nürburgring lap time, Porsche claims a 7min 20secs, that’s 7sec faster than a Carrera GT and 4 seconds quicker than the 997 GT2 RS.
With a 1420kg weight at the kerb it’s 10 kgs lighter than a 991 GT3 despite using the 991 Turbo’s wider – and heavier – bodyshell, and like the GT3 is only available with a seven-speed PDK-S gearbox. The weight savings are attributed to the magnesium roof and carbon fibre front bonnet and engine cover.
Engine and gearbox
The new 911 GT3 RS’s flat-six engine is an enlarged version of the direct fuel injected unit found in the regular 911 GT3. Capacity increases from 3799cc to 3,996cc and power by 28bhp with an additional 15lb ft of torque.
While the capacity and performance figures are match for the heavenly 997 GT3 RS 4.0-litre’s masterpiece of an engine, this latest 911 RS model is based on the latest DFI flat-six.
This latest evolution of Porsche’s Motorsport DFI engine runs the same 12:9.1 compression ratio and 123bhp/litre as the 3.8-litre GT3, but redlines 200rpm lower at 8800rpm.
As with the 991 GT3, the new GT3 RS is only available with a seven-speed PDK gearbox. But just like the GT3 the new RS’s PDK ‘box has been developed specifically for the car, with the final drive ratio increasing from 3.97 to 4.19.
The new GT3 RS comes equipped with Porsche two stage PASM active damper system, with rear-axle steering and Porsche Torque Vectoring Plus with a fully variable limited slip diff all standard. Both the front and rear tracks are wider compared to a regular GT3 and the 20-inch wheels wear a 265/30 tyre on the front axle, a 325/30 on the rear. The front and rear brake discs measure 380mm, with six piston callipers on the front and four on the rear. PCCB is optional.
The new 991 GT3 RS follows in the tyre tracks of its predecessor by utilising the wider body of the current 911 Turbo. The new 991 GT3 RS doesn’t stop there, however. The roof is made from magnesium and carbon fibre is used for the engine cover and front bonnet.
The front wings, as you may have noticed, now also feature air vents to increase downforce across the front axle, and ahead of each rear wheel there is an air-intake for the engine, just as you’ll find on a turbocharged 991.
Naturally there is a suitable set of aerodynamic adds on, include a deeper front splitter and towering rear wing.
Alcantara is the order of the day inside the new 991 GT3 RS. The sports seats are based on the carbon fibre bucket seats first seen in the 918 Spyder, and the steering wheel takes its design cues from the same model. The Club Sport package is standard, and comprises of a bolted-in roll cage behind the front seats, battery master switch preparation with a six-point harness and a fire extinguisher supplied separately.
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Sources : 2015 Porsche 911 GT3 RS Photo | 2015 Porsche 911 GT3 RS Article