2005 Porsche Boxster S Gray/black Under 12k Miles on 2040-cars

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'Faster. Farther.' dives into the history of Porsche racing tech

No doubt, Porsche has produced some of the best endurance racecars around, such as the turbocharged, slant-nose 935 of the 1970s and the ground-effects-enhanced 956 and 962 of the 1980s. But the company's most famous racecar, its first overall winner at the 24 Hours of Le Mans, was the 917.
The 917 embodied many of Porsche's technological achievements up to that point, such as the company's first 12- and 16-cylinder engines (the flat-16 was never used in competition), fiberglass bodies that implemented early aerodynamic practices and the use of new, exotic materials, such as magnesium and titanium.
The racecar was commissioned by the head of Porsche Motorsports, Ferdinand Piëch, to win overall at the 24 Hours of Le Mans in 1970, after he realized a loophole in the rules that allowed cars to compete with engines up to five liters in the Sport category if they were also production models. Piëch saw opportunity: the top prototype class was restricted to three liters; the production minimum to compete in Sport was 25 cars. And so, with much effort, Porsche assembled 25 "production" 4.5-liter 917s and had them parked in a neat line for the race inspectors to verify their legitimacy. It didn't take long before people realized the new Porsches were much faster than the prototype racers, with a top speed approaching 250 miles per hour.

Porsche Cayenne GTS, base models revealed ahead of LA

Porsche unveiled a slew of refreshed Cayennes just a few months ago, but the base model (right) and high-performance GTS trim (above) were conspicuously absent from that list. There's no more reason to wonder about them, though, because the German brand plans to unveil both at the upcoming Los Angeles Auto Show on November 19.
Sitting below the Turbo in the lineup, the latest GTS still offers plenty of performance. It drops the previous version's naturally aspirated V8 in favor of a tuned version of the twin-turbo 3.6-liter V6 from the Cayenne S for some added oomph. The tweaks bring power up to 440 horsepower and 445 pound-feet of torque, which is enough to rocket the model to 62 miles per hour in an estimated 5.2 seconds. The bump also equates to 20 hp and 39 lb-ft more than the current S and more importantly 20 hp and 62 lb-ft more than the previous GTS, according to Porsche.
In addition to the extra muscle, Porsche also decks the GTS out with some added features. It comes with a standard sport exhaust and Porsche Active Suspension Management system with an air suspension lets the chassis sit about three-quarters of an inch lower (20 millimeters). To bring things to a halt, the high-performance models also takes its brakes from the Turbo model.

Porsche reportedly working on new turbocharged flat-four boxer engine?

These days, we've seen just about every automaker dropping cylinders in an effort to appease tightening fuel economy and emission standards - and Porsche is no exception. Nearly three years after introducing an all-new V6 powerplant under the front hood of its Panamera sedan (launched with a range of V8 engines) comes word that Porsche is working on an all-new turbocharged flat-four boxer to replace the flat-six engines mid-mounted in its Cayman and Boxster models.
Specifics have yet to be learned, but reports say the engine is a derivative of the current 3.8-liter six (shown above) found under the rear decklid of the Carrera S, yet with two fewer cylinders. Fitted with a turbocharger, direct-injection and the automaker's VarioCam Plus, the new all-aluminum 2.5-liter flat-four will likely develop upwards of 350 horsepower and 360 pound-feet of torque. Redline should be about 7,500 rpm. Initial indications say that Porsche will only offer the new engine with its seven-speed PDK dual-clutch automatic, tuned to take advantage of the low-end torque, but a traditional six-speed manual gearbox has not been ruled out. Despite the loss of two cylinders, enthusiasts will likely embrace the new engine as it promises to be lighter, more fuel efficient and more powerful than the 2.7-liter and 3.4-liter sixes in the Cayman/Boxster today.
Even though Porsche has been using Volkswagen Group engines for years (e.g., Cayenne V6, Cayenne Diesel and upcoming Macan), all indications are that the new flat-four will not be shared. Instead, it will be kept in-house for the automaker's sports cars and possible future fitment in an entry-level 911.