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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 S and Caterham 7 go head to head on the drag strip

We recently saw the standard Porsche Cayman go up against a Subaru WRX STI in a one-mile drag race with surprising results. Apparently, Evo had a similar idea of evaluating the Cayman's quickness. However, it opted for the more powerful S model and chose a flyweight Caterham Roadsport 140 as the challenger. Will the results of this battle be as close at the end of the kilometer-long (0.62-mile) drag?
Neither of these are cars you'd usually associate with drag racing, but they are nearly evenly matched. Evo selected them based on power-to-weight ratio, with the Caterham offering a scant 140 horsepower in a lithe 1,213-pound package. The Porsche is a quite svelte 2,910 pounds but has 325 hp to haul it around.
Of course, power-to-weight ratio isn't everything. There are a ton of other variables like aerodynamics and gearing that play a huge role, as well. Can the little Caterham's weight advantage overcome the better aero and additional power of the Porsche? Scroll down watch the video and find out.

2015 Porsche 911 GTS starts at $114,200*

Purists often criticize Porsche for creating products like the Cayenne, Panamera and recently launched Macan, saying they dilute the true sports car spirit of the brand. It's an argument we've heard before, and one we counter with two points. First: No they don't. And second: These are Porsche's volume superstars, and the money they rake in allows the company to create dozens of versions of its well-liked sports cars. Want proof? Have a look at the gallery above, where you'll see four new versions of the 911, all with GTS badges on their rumps. This means Porsche now offers 19 versions of the 911. Nineteen.
Porsche offered a GTS version of the 911 in its previous generation, and this new one seeks to slot somewhere between the standard car and the hardcore GT3. It's available in coupe and cabriolet forms, with either rear- or all-wheel drive, starting at $114,200, *not including $995 for destination. The GTS Cabriolet comes in at $126,100, while models equipped with AWD will set you back $120,900 or $132,800 for the coupe or convertible, respectively.
All GTS models get the 430-horsepower version of the Carrera S' 3.8-liter flat-six with the Powerkit, which also includes the Sport Chrono package and the sport exhaust. If equipped with the PDK dual-clutch transmission, the 911 GTS will hit 60 miles per hour in just 3.8 seconds (or four seconds flat, if you've got the Cabriolet) - one tenth of a second quicker than the normal Carrera S. The car's top speed varies, depending on trim or transmission, but Porsche says the car will hit anywhere from 187 to 190 mph, flat out.