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Porsche 911 GT spied streaking at the Nurburgring

At any given moment, you can bet that Porsche is testing some new version of the 911. When we see those prototypes undergoing testing, they're typically camouflaged, at least in part, to keep us from seeing what Zuffenhausen (or Weissach) is up to. But this particular example is completely undisguised. So what are we looking at, exactly? Well, for starters, it's likely the upcoming facelifted version of the current 911. The current 991 generation has been on the market now for four years, so the 991.2 (or 991.5, perhaps?) will likely be tasked with keeping Porsche's iconic sports car current for several more years to come. This version can be seen with front air intakes similar to those on the Cayman GT4, along with updated headlights, LED strips, new door handles, ventilated rear engine cover, reprofiled rear bumper, fresh taillights, and a new exhaust. The far bigger development is that the updated 911 is expected to ditch natural aspiration in favor of downsized turbocharged engines across almost the entire range – not just in the 911 Turbo. This particular version we see here, however, could be one of the few hold-outs for atmospheric pressure. That's because what we're looking at could be the upcoming back-to-basics version being prepared by the GT division – the same outfit responsible for the 911 GT3, GT3 RS, and Cayman GT4. Possibly adopting the name GT5, this new version of the 911 is anticipated to be the purist's choice: naturally aspirated flat-six, three-pedal manual transmission, skinny tires, no frills. This undisguised prototype appears to be packing a production roll cage and thin, leather-clad bucket seats – splitting the difference between racing buckets and the usual, thicker thrones. We'll have to wait a bit longer until Porsche is ready to release all the details of the refreshed 911, hopefully to include that GT version. But for an unadulterated taste of what's to come, look no further than the spy shots in the image gallery above. Related Video:

Porsche continues facelift spree with 911 Turbo

If there's ever been automotive case for constant evolution, it is the Porsche 911. It seems like every time a new version of the rear-engined sports car debuts, Porsche is already hard at work on a facelifted version of it that changes some subtle, barely noticeable aspect.
Such is the case with this round of images of a facelifted 911 Turbo, which was seen undergoing winter testing alongside the facelifted, hardtop-version of the 911 Cabriolet we showed you yesterday. The new, 991-based 911 Turbo was just unveiled in May of 2013.
Like the Cabrio from yesterday, both the Turbo and naturally aspirated models shown here feature additional slats at the rear of the car, right behind the rear wheels. These slats on the standard model lend credence to what we learned yesterday - that even the regular 911 models could end up getting turbocharged mills.

More details on Lanzante's F1-engined Porsche 930 restomod

Not long after last year's Porsche Rennsport Reunion, we posted on Lanzante Engineering's restomod project with the original Porsche 911 Turbo. McLaren Formula One used TAG-branded Porsche engines for four years in the 1980s to win two constructor's and three driver's championships. McLaren sold 11 of those engines to Lanzante — nine of which have been raced, one with a win to its credit — and Lanzante is installing them into the original chassis of some 930s. PistonHeads stopped by the shop to find out more. By the end of its service in the MP4/3, the TAG-Porsche TTE P01 motor rang up 1,060 horsepower in qualifying and 960 hp in the race, revving to a 12,600-rpm redline. Porsche engine legend Hans Mezger had led the development, coaxing those numbers from just 1.5-liters of V6 aided by two large KKK turbos at a max of four bar. All that was fine for a time when F1 ran with unlimited testing and unlimited parts, but a modern owner doesn't want to pay five techs to live in his garage and keep his car running. Lanzante asked Cosworth to make the engine more drivable and reliable. Cosworth installed a new crankcase, adjusted the air-fuel mixture, and installed smaller turbos for quicker power delivery, decreasing max boost by 25 percent to three bar (43 psi). The redline has come down to 9,000 rpm, for final output figures of 503 hp and 310 pound-feet of torque. According to PistonHeads, power climbs a "steady incline to redline," and more than half the rev band delivers maximum torque. The 503-hp rating doesn't sound like much today, when a Mustang gets more than 700 hp. Yet the first 930 Turbos got 296 hp and 243 lb-ft from a 3.0-liter flat-six with one big KKK turbo. The most powerful 930 Flatnose worked up 330 hp and 347 lb-ft from a 3.3-liter flat-six. Lanzante's taken out a ton of weight, though. The TAG engine is already 220 pounds lighter than the 930's 3.3-liter; a new carbon fiber hood and engine cover, and aluminum door skins shed more pounds. The total package weighs roughly 2,430 pounds, which is more than 500 pounds lighter than the original Porsche Turbo. That includes the extra pieces needed to make an F1 engine power a passenger car. Lanzante had to swap in a 930 Flatnose front bumper, which replaces the fog lights for oil coolers. The team put radiators at the front of the car as part of a brand new water cooling system. The climate control is entirely electric, because F1 cars didn't come with HVAC.