Porsche1979 – 1989 Porsche 911 Turbo 3.3 CoupĂ©Editorial Team 1979 Porsche 911 Turbo 3.3 CoupĂ© Engine: air-cooled, six-cylinder opposed-cylinder engine with Turbocharging Displacement: 3299 cmÂł Output: 221 kW (300 HP) at 5500 rpm Top Speed: 260 km/h. In Detail type Series Production Car production years 1979 – 1989 built at Stuttgart, Germany