Autocar joined the Porsche development team in South Africa for a close up look at the upcoming 2012 Porsche 991 Carrera and Carrera S. The new Porsche 911 will be officially unveiled to the press and public at the 2011 Frankfurt Motor Show later this year. To summarize Autocar’s story; the new Porsche 991 is longer, lighter, faster and more powerful than the 997.

Autocar on the Porsche 991

An all new Porsche 911 will be revealed later this year – and Autocar joined the development team in South Africa to sample the car.

The new 911, codename 991, is only the third all new design in the car’s incomparable 48 year history. The first of the three most critical departures between it and its forebears is that this is the first 911 to be built chiefly from aluminium.

The second difference is that the wheelbase has been extended by a substantial (but currently secret) amount. Two-thirds of the extra space between the wheels is located behind the driver, although it remains a fundamentally two-seat car. Project manager August Achleitner insists the car’s character and agility have not been compromised.

But if fiddling with a 911’s wheelbase is courting controversy, changing the way it steers might be seen by purists as punching it in the face. The third reason this 911 is like no other before is that hydraulic power steering has been dropped for an electro-mechanical system. Achleitner insists:

If you drove this car you would never know it did not have hydraulic steering. Believe me, I know how important this is.

The 991 is lighter than the car it replaces by dozens of kilos, despite bigger, heavier wheels, tyres and brakes and more robust crash structures. It’s also very slightly lower.

But some things have not changed so much. While there is not a single interchangeable part in the suspension, the architectural concept remains the same. You’ll find struts at the front and a multi-link arrangement at the back. Relative spring rates have been slightly increased while the damping has been backed off a little, in pursuit of better small bump isolation. The front track has been widened by a similar amount to that which helped transform the dynamic behaviour of the current 997 GT3 RS.

Only the powertrain remains familiar, and even here there have been big changes. While the ‘S’ continues to displace 3.8 liters, the standard car’s capacity has been reduced to 3.4 liters. In fact its bore and stroke are identical to those of a Boxster S, though different cams and a new exhaust provide more power – 350bhp at the moment, though homologation has yet to be completed. The power of the 3.8 rises to 400bhp and the rev limit of both engines increases by 200rpm to 7,800rpm.

The PDK double clutch auto has been sharpened up again but it is the manual that might be introduced that breaks new ground. In effect it is a manually controlled single clutch version of PDK which means, for the first time in any manual production car I can think of, seven forward speeds. In fact the first six ratios are identical to the auto, though a slightly shorter, more sporting top gear is fitted.

The ramifications go far beyond the extra cog. This means the old gearbox is no more, so Porsche’s Motorsport colleagues working on the next generation of GT3s down in Weissach have nothing to strap to the old race-based flat six that’s powered all their cars since 1999. So this noble motor has been retired, presumably to be replaced by the somewhat simpler, cheaper, more modern and unrelated direct injection engine used by all other 911s. Quite what will be done to it for the new GT3 remains to be seen.

Read the full article by Andrew Frankel

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  1. I’m going to need Porsche to commit to new styling, soon. I lost interest in the 9-series about ten years ago. Fun to drive, but uninspired and repetitive styling removes any chance of purchase.

  2. It´s always the same: There´s a new 911 in the pipeline

    – Porsche enthusiasts are afraid of new technology
    – The others are complaining about the unique design

    …however I´m sure the 991 will show an astonishing performance by it´s breakthrough technology!
    I can´t wait for the GT3 that is expected to do 10000 UPM beeing the best sportscar we´ve ever seen ;)

  3. @peter a those are stickers. the lights and the vents are all stickers, we wont know what the car looks like 100% for a bit


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