Porsche 911 Turbo 3.3 (930)

Porsche 911 Turbo 3.3 (930)

The Porsche 930 3.3 Turbo entered production in 1978 as a significant evolution of the original 3.0-liter Turbo. By enlarging the flat-six to 3,299cc and adding an intercooler beneath a redesigned rear wing, Porsche extracted 300 horsepower — a 40-hp increase that also came with improved reliability and drivability.

The engine's character remained unmistakably 930. Below 3,500 rpm, the car pulled with the authority of a normal 911S. Then the turbocharger came on boost, and the car was transformed. The surge of power was less violent than the original 3.0-liter but no less impressive, pushing the driver firmly into the leather seat as the speedometer swept past 250 km/h.

The intercooler was the key technical advance. By cooling the compressed intake charge before it entered the cylinders, Porsche could run higher boost pressure while actually reducing thermal stress. This allowed the use of a slightly lower compression ratio, which in turn reduced the tendency for detonation — the bane of early turbo engines. The result was an engine that was both more powerful and more reliable.

The running gear was upgraded to match. Cross-drilled ventilated disc brakes with massive four-piston calipers provided incredible stopping power. The suspension was tuned for more compliance than the RS-derived setup of the 3.0-liter car, making the 3.3 a more capable grand tourer. The four-speed gearbox was retained, its wide ratios actually well-suited to the engine's broad torque band.

The 930 3.3 was a car of extraordinary duality. With its full leather interior, electric windows, and climate control, it was a luxurious grand tourer. But the wide-body stance, whale-tail wing, and thunderous flat-six announced its other personality — that of a barely civilized race car in business attire.

The model continued with updates through 1989, receiving a five-speed gearbox for its final years. It remains one of the most recognizable and aspirational sports cars ever produced.