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Cosworth briefly crows that Aston Valkyrie's 6.5L V12 has record horsepower

It's only natural that Cosworth would want the world to know that it's building the world's most powerful naturally-aspirated engine for the Aston Martin Valkyrie and Valkyrie AMR Pro. The timing of when the world should know about it, that's at issue. Yesterday the English engine maker's official Twitter account posted a picture of the barely-there coupe and the line, "We're famous for breaking records and our latest engine, the Aston Martin Valkyrie 6.5-litre V12, will be the world's most powerful naturally aspirated road engine with 1,130bhp." Two tags accompanied the post, #Cosworth and #AstonMartinValkyrie. About 90 minutes later, the tweet disappeared. The likely issue is that Cosworth got ahead of Aston Martin's official confirmation of Valkyrie outputs, something we're more used to from patent offices and Chinese model makers. The question is what output is Cosworth really talking about, and which car. All of last year, however, various reports had the street-legal Valkyrie making 1,130 hp. A Road & Track report attributed "nearly 1,000 hp" coming from the NA V12, the remaining 130 from a kinetic energy recovery system working the front axle. Hence, we're not sure if Cosworth's talking about its own engine alone at 1,130 hp, or its engine with the KERS. But then there's this: At the launch of the Valkyrie AMR Pro during the Geneva Motor Show this year, Aston Martin said the track-only Valkyrie AMR Pro would enjoy "a combined power output of more than 1100 bhp — more than the Valkyrie road car and a figure than comfortably exceeds the magic 1:1 power-to-weight ratio." The truth's a mystery for now, which is just as Aston Martin would want it. If Cosworth's engine really does make 1,130 hp on its own, that would be monstrous, and it would mean the automaker's been playing a serious game of English understatement. Even if Cosworth included the hybrid help, however, an NA V12 with 1,000 ponies would take the crown. The only competition is the 6.5-liter V12 in the Ferrari 812 Superfast, and that's 211 horses adrift. The quad-digit figures expected from Mercedes-AMG Project One and McLaren Speedtail require turbochargers, as does the just-teased V8 going into the Shelby Tuatara. With the first of 150 Valkyrie road car deliveries scheduled for next year, we probably don't have that much longer to wait to find out. Related Video:

Aston Martin DB11 arrives with 600 horsepower, stunning design

The drapes have been removed from the new DB11, billed by Andy Palmer, Aston Martin's chief executive, as "not only the most important car that Aston Martin has launched in recent history, but also in its 103-year existence." Well, they all are, Andy. Aston Martin is such a small company that it bets the farm with each new model. That's part of its appeal, for Aston's one constant is the svelte beauty of its cars, which (lest we forget) are the company wheels for one Commander James Bond. So the DB11 is important, make no mistake. It goes on sale this autumn and will cost $211,995 in the US. It's the tenth car (there was no DB8) in a lineage that began in 1948 with the DB1 – the first car to bear the initials of then owner, David Brown. Just 15 DB1s were made, but the DB line has been the most successful model for Aston Martin over the years, including such cars as the DB5 and DB7 as well as the 2003 DB9, which was the last all-new Aston Martin. This totally new DB11 is a clean-sheet approach from design director Marek Reichman, with a new aluminum bodyshell, suspension, cabin, and a Mercedes-Benz-based electronic architecture, which runs the systems. View 24 Photos To save fuel the engine will close down one bank and run as a 2.6-liter straight-six when the extra power is not required. The heart is a brand-new, 5.2-liter V12 boosted with two Mitsubishi Heavy Industries twin-scroll turbochargers with water-to-air inlet-charge coolers. It punches out 600 horsepower at 6,500 rpm and 516 pound-feet of torque from 1,500 rpm. Maximum speed is said to be 200 miles per hour with 0-62 acceleration in 3.9 seconds. The new engine drives the rear wheels via a ZF eight-speed automatic transmission and a mechanical limited-slip differential. Aston moved from the previous 6.0-liter naturally aspirated unit to a 5.2-liter biturbo to improve the part-load efficiency and EPA fuel economy figures. "In downsizing we want the emissions and we want the economy, but more than those, we want the torque," says Ian Minards, director of product development. To save fuel the engine will close down one bank and run as a 2.6-liter straight-six when the extra power is not required, but to prevent the exhaust catalyst from overcooling, the electronics switch between two banks. "It's undetectable," says Minards. Minards' team spent three years creating this car. "It's been a little bit daunting," he says.

Aston Martin Vantage vs. Mercedes-AMG GT C Review | Translating German into English

GROssBRITANNIEN — No car matches the new Aston Martin Vantage as closely as the Mercedes-AMG GT, the two sharing both their 4.0-liter twin-turbocharged V8 and electrical architecture while competing for the same market niche. So, of the many challenges Aston Martin faced when developing it, ensuring that the Vantage had a unique identity must have weighed more heavily than any other. The added spice to this confrontation is the GT's status as halo model for AMG. Meanwhile, Aston Martin's brand identity, built on the sharp-suited machismo embodied by a certain big-screen spy, is a make-or-break issue for the company. The identity problem has fascinated me since the AMG deal was first announce in 2013. So exploring the Vantage on British roads with the GT literally filling the mirrors is a big deal. Now, finally, we have directly competing products with which to explore the theory. And there's much to like in both, not least of which is that common powerhouse of an engine. While they don't share a platform, both use the classic front-engine, rear-drive, transaxle layout, with traditional driving manners to match. Some quick number-crunching as an appetizer: The AMG GT C you see here has the dry-sumped M178 derivative of the V8, with 550 horsepower and 501 pound-feet of torque, driving the rear wheels through a transaxle-mounted, seven-speed dual-clutch transmission and fully active electronic locking differential. It's 179 inches long, weighs 3,748 pounds and will clear 0-60 mph in 3.6 seconds en route to 197 mph. The Vantage has the wet-sumped M177 version of the same engine, as featured in countless AMGs and shared with the DB11 V8. It makes 503 hp, 505 lb-ft and drives the rear wheels through a transaxle-mounted, eight-speed automatic gearbox and fully active electronic locking differential. Sounding familiar? It's comparable in overall length but a couple of inches longer in wheelbase, and weighs pretty much the same as the GT C, give or take a few pounds. It hits 60 in 3.5 seconds and tops out at 195 mph. Both have adaptive dampers and a variety of driver modes, both are built from aluminum and both are at the sportier end of the GT spectrum. The two U.K.-market cars you see here cost just more than $180,000 with options. Pretty darned close, then. Numbers are one thing.