Background
Much of the Porsche 911's development resulted from the factory's racing programme, and it was the then Group 4 homologation rules, which required 400 road cars to be built, which spurred the development of 'Project 930': the legendary 911 Turbo. In production from April 1975, the Type 930 Turbo married a KKK turbocharger to the 3.0-litre RSR engine, in road trim a combination that delivered 260bhp for a top speed of 250km/h (155mph).
But the Turbo wasn't just about top speed, it was also the best-equipped 911 and amazingly flexible - hence only four speeds in the gearbox - being capable of racing from a standstill to 100mph (160km/h) in 14 seconds.
The Turbo's characteristic flared wheel-arches and 'tea-tray' rear spoiler had already been seen on the Carrera model while the interior was the most luxurious yet seen in a 911, featuring leather upholstery, air conditioning, and electric windows. The Turbo's engine was enlarged to 3.3 litres for 1978, gaining an inter-cooler in the process; power increased to 300bhp and the top speed of what was the fastest-accelerating road car of its day went up to 257km/h (160mph).
More refined than before yet retaining its high-performance edge, the Turbo sold in the thousands, becoming the definitive sports car of its age. When Porsche revealed that the original 911 would be replaced by the new Type 964 in 1990, dealer stocks of the existing Turbo model sold out overnight.







