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Porsche 919 Hybrid revives Porsche's factory Le Mans efforts

After months of teasing with camouflaged testers, Porsche has finally unveiled its prototype entry for the 2014 World Endurance Championship, the 919 Hybrid. Porsche, you may recall, hasn't had campaigned a factory team at Le Mans in years, so the 919 is nothing less than their recommitment to endurance racing.
Combining a 2.0-liter V4 (yes, a V4) that revs to 9,000 rpm, the 919 produces around 500 horsepower with a pair of energy recovery systems. The first system recovers the heat energy from exhaust gasses as they pass through an electrical generator, while the second system is a bit more familiar. Using a setup similar to what is found on the production 918 Spyder, a generator on the front axle recovers kinetic energy from the brakes, which is subsequently stored in a battery system. That power can then be sent to the front wheels at the driver's command, effectively turning the 919 into an all-wheel-drive racecar.
Despite these various forms of motivation, Porsche doesn't claim to be seeking outright power supremacy, with Chairman Matthias Müller saying, "In 2014, it will not be the fastest car that wins the World Endurance Championship series and the 24 hours of Le Mans, rather it will be the car that goes the furthest with a defined amount of energy. And it is precisely this challenge that carmakers must overcome. The 919 Hybrid is our fastest mobile research laboratory and the most complex race car that Porsche has ever built."

Porsche announces plan to replace 911 GT3 engines

About a month back, we reported that Porsche was suspending delivery of its 911 GT3 due to reported incidents of the engine bursting into flames. A few days later, Porsche told owners of the new track-ready models not to drive their cars and had their local dealers pick up the cars in question. Just a couple of days ago, we reported that Porsche was working on a fix, and now we have the official details.
Following an internal investigation prompted by two such incidents, Porsche has confirmed that is has identified the problem as resulting "from a loosened screw joint on the connecting rod." The loose connecting rod, Porsche found, damaged the crankcase, which in turn resulted in oil leaking and then - in at least two cases - igniting.
Our source is unaware of Porsche being contacted by GT3 owners concerned about the impact of a replacement engine on their car's collectibility or resale value.

New Porsche 4-cyl engines to range from 1.6L to 2.5L

Recent rumors of a turbocharged, flat-four-engine from Porsche for the Boxster (pictured testing above), Cayman and maybe other models go back over a year. The latest scuttlebutt indicates that there could be three variants on the horizon with 1.6-, 2.0- and 2.5-liter displacements and power as high as 360 horsepower.
Car magazine in the UK claims to have access to the specifications for the project and thinks the 2.0- and 2.5-liter versions are guaranteed for production for the Boxster and Cayman. However, it believes a question mark still looms over the 210-hp 1.6L because the engine would go into a new, smaller sports car that still doesn't have a green light for production.
Regardless of displacement, the new fours would be turbocharged and direct-injected. The 2.0-liter would produce around 286 hp and 295 pound-feet of torque, and the 2.5-liter would make about 360 hp and 347 lb-ft. Earlier reports pegged some parts sharing with the current flat-six.