Peak performers: Porsche presents the new 911 Turbo and 911 Turbo S, the top-of-the-range models in the 911 series May 2013 Porsche Club News 2/13 911 Turbo – Engine: Six-cylinder Boxer engine, Displacement: 3,800 cc, Power: 383 kW (520 hp), Maximum torque: 660 Nm, Top speed: ...