2020 Porsche 911 Carrera on 2040-cars

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Porsche 911 GT3 RS getting all-new atmospheric engine

Porsche surprised many of its most puritanical enthusiasts when it took a decidedly more usable approach with the current 911 GT3. But when the new GT3 RS debuts, it promises to be a much more extreme departure. And a big part of that comes down to the engine. At the Detroit Auto Show this week, Auto Express spoke with Porsche R&D chief Wolfgang Hatz – who also happens to be head of engine and transmission development for the entire Volkswagen group. Hatz revealed that Porsche has developed a completely new engine for the GT3 RS, and while previous rumors suggested the RS would go turbo to fill in for the lack of a GT2 (and make the most out of its displacement), Hatz confirmed that it will be naturally aspirated. Considering that Porsche rarely goes downwards when it comes to 911 engine displacement, only upwards, we'd expect the new RS to pick up where the previous 4.0 left off. The new GT3 RS is also expected to pack a more extreme suspension, aero and stripped-out interior, but those hoping for an old-school approach may be disappointed to learn that the new RS will (at least at launch) only be available with the seven-speed dual-clutch transmission – though a manual version could follow if there's enough demand. In a related development, Hatz also hinted that the Cayman GT4 could debut at the Geneva Motor Show in March, with an even more extreme approach than the previous Cayman R. The new top-of-the-line Cayman is reportedly being developed to comply with GT4 class racing regulations but be fully homologated for road use. Related Video:

'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.

eBay Find of the Day: Your choice of new, unregistered mid-2000s supercars

If you didn't quite find what you were hoping to see under the tree this year, maybe it's about time you buy yourself something nice. Something like an unregistered 2005 Porsche Carrera GT. The car has never been titled and has just 83 miles on the odometer. With one owner since new, the Carrera GT is likely to be as nice an example as you're likely to find outside of a museum. Porsche only built 340 of these machines back in 2005, and with a 610 horsepower V10 kicking at your spine, you can lap Santa's sleigh next year. Currently, the Carrera GT has a buy it now price of $457,325 with around six days left on the auction.
Not flashy enough for your tastes? Stroll on down to West Hollywood and you'll find a similarly untitled 2004 Ferrari Enzo up for grabs with a sticker of $1.8 million. Technically a Euro-spec car, the Enzo isn't legal to operate on US roads, but could be modified to satisfy Uncle Sam with a little effort. The seller calls this car the "last brand-new Enzo in existence" and with 175 miles on the clock, that may be a true statement. You can head over to eBay Motors for a closer look if you're feeling spendy.