The new 2017 Porsche 911 RSR in numbers

Dr Frank-Steffen Walliser, Head of Porsche Motorsport, has described the new 2017 Porsche 911 RSR as “the biggest evolution in the history of our top GT model”.

This statement regards, in part, Porsche’s decision to move the engine in the new LM-GTE contender ahead of the rear axle (for the first time since the 911 GT1 two decades ago).

However, Weissach hasn’t stopped there with the new Porsche 911 RSR. The motorsport department has optimised almost every area of the GT racer – from the engine itself to the aerodynamics – as a quick look at some of the car’s vital statistics shows: 

2017 Porsche 911 RSR 2013-2016 Porsche 911 RSR
Engine capacity 4,000cc 3,996cc
Bore 102mm 102.7mm
Stroke 81.5mm 80.4mm
Valves per cylinder Four Four
Max. power 510hp 470hp
Front brakes 390mm discs; six-piston calipers 380mm discs; six-piston calipers
Rear brakes 355mm discs; four-piston calipers 355mm disc; four-piston calipers
Front wheels 12.5×18-inch 12.5×18-inch
Rear wheels 13×18-inch 14×18-inch
Gearbox Six-speed sequential Six-speed sequential
Weight 1,243kg 1,245kg
Power-to-weight 410hp/tonne 378hp/tonne

Of course, the numbers don’t tell the whole story. Porsche has been typically cagey with certain details (as you would expect any manufacturer to be with a brand new racing car).

In lieu of any official rpm figures, the longer stroke of the new DFI flat six would suggest that it may run at slightly slower engine speeds. Despite developing nearly ten per cent more power, this would help to put less stress on the internal components of the 2017 RSR’s powerplant.

It’s also interesting to note that, with the significant shift in the new car’s weight distribution, Porsche has had to increase the front disc size by 10mm in order to deal with the increased load on the front axle under braking.

2017-911-rsr-rear

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