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2015 24 Hours of Le Mans live race report

Check back regularly for more race updates every few hours. No, you don't need to stay up for the entire 24 Hours of Le Mans, but if you want to catch any of the action, Autoblog friend Reilly Brennan has a handy guide. And to keep you up to speed on the latest race events, we'll be posting live from Le Mans with regular race reports.Hour 1: Five laps in, Audi breaks up the three Porsches at the front, with the #19 919 Hybrid, driven by Nico Hulkenburg, passed by all three R18s. Hulkenburg eventually took back fifth position only to fall back again after the first pit stop. Meanwhile, clutch trouble kept the #23 Nissan GTR-LM in the pits until 15 minutes into the race. The other two Nissans were forced to start at the back of the grid after failing to the meet the 110 percent qualifying speed regulation. At the end of the first hour, just 7.5 seconds separated the first six cars. Then the factory team #92 Porsche GTE car caught fire, with the the #13 Rebellion P1 car taking frontal damage in the ensuing carnage. With the safety car out, the field is once again bunched up.Hour 2: The slugfest between Audi and Porsche continues, with neither side backing off. Halfway through the second hour the #7 R18 passes both leading Porsches for the top position. After another round of pits stops Porsche regains the lead until lap 30, when the Audi overtake once again and quickly pulls out a three-second gap. Nico Hulkenburg passes the other two Audis to join his Porsche teammates. At the beginning of the third hour it's Audi #7, Porsche #17, #18, and #19, followed by Audi #8 and #9. 33 seconds separates this group, with Toyota a minute back from the front car.Hour 3: On track the action refuses to stop. Although it's early, Audi is looking strong with the overall lead in the #7. What's more is that the Audis run four stints per set of tires, while the Porsche cars have to change rubber every third stop. But after a quick refueling, the lead R18 gets a tire puncture and comes back in 3 laps later, allowing Porsche to take over the top two spots. Then as the hour closes out a yellow flag causes traffic to bunch up and the #8 Audi gets stuck with nowhere to slow down. Driver Loic Duval dives for the side of the road but hits the guard rail and careens across the track, damaging the front and rear bodywork. The rest of the car is still intact, though, and once in the pits Audi replaces the entire front and rear of that in only three minutes.

2017 Porsche 911 Carrera experienced from the passenger seat

Autoblog joins Porsche for Rennsport Reunion V at Mazda Raceway Laguna Seca, the fifth international gathering of all things Porsche. If you've ever had a picture of a Porsche on your wall or dreamed of owning a certain model, either that very car or one just like it is here. Watching three 917 racers blaze over the rise at the front straight and down into turn one can make a viewer think, "So this is how Steve McQueen felt..." It was a modern Porsche that delivered one of the highlights of the first day, though: we rode shotgun for three hot laps of the track in the new turbocharged 991.2-series 911 Carrera S, with Thomas Krickelberg, director of powertrain for the 911 model line, our pilot. We cornered him and August Achleitner, vice president of the 911 product line, for a few questions about the changes. What do you call the standard 911 now that it has turbocharged engines? Carrera. If you're wondering what to call the standard 911 now that they have turbocharged engines, the answer is: Carrera. Krickelberg said, "In-house we call them 'little turbo' and 'big turbo,'" but the Carrera is a model line within the 911 model line, the big boy 911 Turbo is a second model line within the 911 family. One will continue to be called Carrera, the other simply Turbo. The move to turbocharging came to serve the twin kings of performance and fuel economy, but engineers played around with numerous configurations. A non-turbo engine displacing about 4.0 liters – that's as big as the 9A1 engine block can go – was considered, but that setup couldn't deliver the desired fuel efficiency. Krickelberg said engineers considered a small-displacement block of around 2.0 liters, but that was abandoned because "takeoff behavior was worse" because the turbo was called upon to do too much of the heavy performance living. Krickelberg added, "Not only that, but there was a too big a gap between real-world fuel economy and homologation fuel economy." Base Carrera and the Carrera S models haven't used the same engine displacement since the 996 series departed at the end of 2004. Achleitner said, "We found 3.0 liters is the best solution to get the best mix of fuel and air in combustion chamber - it offered the best geometry, bore and stroke, and the size of the walls.

Are you the 2017 Porsche 911 GTS Targa?

Our spy shooters have caught a strange, mash-up beast wearing a Porsche badge. Superficially, this is a facelift for the 911 Targa that features new bumpers, door handles and a redesigned engine cover, along with new light graphics for the front and rear lights. But have a look around back, and you'll find two inboard exhaust pipes; they aren't right up against each other as on the 911 GT3, but are spaced about five inches apart. The shooters said the first time they saw that arrangement was last winter, on a convertible during testing. We saw it again more recently in spy shots of what was thought to be the 911 GTS coupe prototype at the track. But when the production GTS arrived, it wore the traditional quad-pipe at the corners. The theory put forward by the spy photog: the current GTS has a naturally aspirated engine, but facelifted prototypes they've been seeing all have turbo engines, so this could be the facelifted Targa coming in 2017, after the 991-model 911 gets a refresh. In that case, the GTS coupe prototype at the track would have also been a post-refresh, turbo-engined GTS. It's only a hypothesis, but more than one outlet has reported that Porsche is going all-turbo for the updated 2015 models – the new exhaust position and those 911-Turbo-like vents could be their identifiers. We expect to find out when the lineup is unveiled at the 2015 Geneva Motor Show, possibly codenamed 992 instead of 991.2.