2009 Porsche 911 Carrera S Cabriolet on 2040-cars

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The 2017 Porsche 911 RSR goes mid-engine, purists be damned

Porsche unveiled its World Endurance Championship and IMSA WeatherTech Championship competitor with the 2017 911 RSR. And this 911 is different from the rest, as the 4.0-liter flat-six engine powering this beast is in front of the rear axle, not behind it. That's right, this 24 Hours of Le Mans competitor ditches the iconic rear-engine layout. Porsche isn't talking specifics on how exactly things are arranged back there. The engine is new, now based on the 991 911's block instead of the previous Mezger motor that's been used for years. The transmission design is new as well – it would have to be to accommodate the new location relative to the engine. The racecar has been engineered to meet the LM-GTE class, where it will go up against other mid-engine cars like the Ford GT and Ferrari 488 GTE. Moving the engine to the middle has given Porsche the ability to fit the 911 RSR with massive bits of aero, like the humongous rear diffuser that looks like it would be more at home on a machine of war. The only thing that can compete with the diffuser for size is the top-mounted rear wing, which shares a similar design to the one found on the 919 Hybrid. Going back to the engine, the direct-injected boxer motor, depending on the size of the restrictor, generates as much as 510 horsepower and sends all of its fury to the rear wheels. The engine is paired to a six-speed sequential gearbox, which drivers can employ through paddles on the steering wheel. The new engine doesn't have a lot of weight to push around as the 911 RSR, as required by regulations, weighs 2,740 pounds. Speaking of weight, the engine layout isn't the only change for the 911 RSR. For 2017, the car ditches its steel body for one that's made out of carbon fiber. The body attaches to the chassis via quick-release fasteners, making the vehicle easier to service as exterior elements can be removed with minimal effort. The racecar also gets a radar-based collision system – aptly named the "Collision Avoid System" – which is meant to limit the 911 RSR's encounters with faster LMP prototypes. Only time will tell if the new layout and aerodynamic components help the 911 RSR beat its competition. But there will be plenty of opportunities to see the racecar in action as Porsche plans to run the 911 RSR in 19 races during the 2017 season, the first of which will take place at the IMSA opener on January 28th at Daytona, where the racecar will make its track day debut.

Porsche Cayman GT4 looks sexy, rapid in the nude

Porsche doesn't officially have a name for its more hardcore version of the Cayman, yet. The speculation is that the coupe is called the GT4 as a little brother to the 911 GT3. However, the German sports car maker apparently is not interested in keeping the model's looks much of a secret because these latest shots show it without a hint of camouflage to speak of. The GT4 reportedly takes the GT3's ethos of more power, less weight and stickier-than-glue handling and brings it all to the Cayman. As these photos show, there's a much lower air dam up front with a cooling vent at the tip of the hood. Larger wheels are another obvious addition and are likely shod with some very sticky rubber. At the back, there's a double spoiler combining a wing and a ducktail. The power and gearbox for the GT4 remains a mystery, though. The rumor is that it uses a tuned version of the 3.4-liter flat-six in the Cayman S and GTS to make between 370 and 400 horsepower. A similar overhaul of the Boxster might be on the way, as well. A version of the convertible wearing some of the Cayman GT4's goodies was recently spotted testing. That one even had a manual transmission to make the prospects behind the wheel even more exciting.

McQueen's Porsche 917 from Le Mans races to the auction block

Steve McQueen may have been the headline actor of the motorsport cult classic film Le Mans, but we all know who the real star was. Or rather, what: the Porsche 917. More specifically, it was the Gulf-liveried #22 - not McQueen's #21 - that won the race, making it one of the most iconic cars ever to drive across the silver screen. And now it's going up for auction.
This 1969 Porsche 917K, chassis 917-024, has a storied history both on and off the screen, even if it didn't win any (off-screen) races of note. This example was the first 917 to be campaigned in an actual race when Porsche handed it to Jo Siffert to drive against the Ferrari 312P and Ford GT40 at the Spa-Francorchamps 1000 Km race in 1969. Siffert found the early example too unstable and ultimately drove an earlier 908 to the checkered flag, but after 917-024 set the fastest time at the following year's Le Mans test day, Siffert acquired it outright.
The Swiss racing driver loaned the car to Solar Productions for use in the film, after which it returned to Siffert's collection until he was killed in an F1 exposition race at Brands Hatch in 1971. In a testament to how much he loved the car, it was 917-024 that lead the funeral procession. The car subsequently fell off the radar until it resurfaced in 2001 as one of the greatest barn finds of the new millennium. Now fully restored and resplendent in its original baby blue and orange, 917-024 is headed to the auction block at Pebble Beach where you can be sure that Gooding & Company will bring in a suitably high price for arguably the most iconic example of one of the most iconic Porsches of all time.