Mercedes-AMG launches 416-horsepower 4-cylinder engine

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The 416 horsepower M 139 turbocharged 4-cylinder engine will go into the compact vehicles produced by Mercedes-AMG | Mercedes-Benz photos

Mercedes-AMG has announced an all-new turbocharged 2.0-liter 4-cylinder engine that pumps out an astounding 416 horsepower and 369 pound-feet of torque for use in the most compact of the AMG vehicles. The makers tout the new engine as the world’s most-powerful turbocharged 4-banger.

The engine, designated M 139, actually will be produced in two versions, the 416 horsepower S version and a 382 standard version. 

Rather than transverse mounting, the engine has been rotated with the turbocharger and exhaust manifold at the rear. This moves the intake to the front and allows for a lower hood height and improved air ducting, Mercedes-AMG said.

New features include the twin-scroll turbocharger, roller bearings for the compressor and turbine, electronic-charge pressure control, an aluminum crankcase, larger exhaust valves and cylinders lined with Nanoslide technology developed for use in Formula One racing engines and protected by 40 patents.

The new engine weighs 353.8 pounds, Mercedes-AMG said.

One person is responsible for the complete build of each AMG engine
Tools help assure proper instalation
Pistons ready for insertion
Tools draw power from renewable electrical sources
Just about finished

While still produced on AMG’s “One Man, One Engine” process, engine builders have a new assembly line setup that replaces overhead power cables and such with automated carts that deliver their cordless tools and various components to them as they work. The assembly process also is aided by table computers that record tasks as completed to assure quality assurance.

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A former daily newspaper sports editor, Larry Edsall spent a dozen years as an editor at AutoWeek magazine before making the transition to writing for the web and becoming the author of more than 15 automotive books. In addition to being founding editor at ClassicCars.com, Larry has written for The New York Times and The Detroit News and was an adjunct honors professor at the Walter Cronkite School of Journalism and Mass Communication at Arizona State University.

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