The Porsche 911 (pronounced Nine Eleven or German: Neunelf) is a two-door, 2+2 high performance sports car made since 1963 by Porsche AG of Stuttgart, Germany. It has a distinctive design with rear-mounted six cylinder boxer engine and independent rear suspension. Since its introduction it has undergone continuous development, though the basic concept has remained little changed. The engines were air-cooled until the introduction of the Type 996 in 1998.
The Porsche 911 was developed as a much more powerful, larger, more comfortable replacement for the Porsche 356 and was essentially a sporting evolution of the Volkswagen Beetle.
1964 to 1969 2.0 Liter (O, A & B series)
The earliest editions of the 911 had a 130 PS flat-6 engine, in the "boxer" configuration like the 356, air-cooled and rear-mounted, displaced 1991 cc compared with the 356's four-cylinder, 1600 cc unit. The car had four seats although the rear seats are very small, and the car is usually called a 2+2 rather than a four-seater. It was mated to a five-speed manual "Type 901" transmission.
In 1966 Porsche introduced the more powerful 911S, the engine's power raised to 160 HP. Alloy wheels from Fuchs, in a distinctive 5-leaf design, were offered for the first time.
In 1969 the B series was introduced: the wheelbase for all 911 and 912 models was increased from 87.0 to 89.3 inches, an effective remedy to the car's nervous handling at the limit. The overall length of the car did not change
1969 to 1971 2.2 Liter (C & D series)
For 1970 the engines of all 911 were increased to 2,195 cc. Power output were uprated 123 HP for the 911T.
1971 – 1973 2.4 Liter (E & F series)
The 1972–1973 models got a new, larger 2,341 cc engine. This is universally known as the "2.4L" engine, despite its displacement being closer to 2.3 litres— perhaps to emphasize the increase over the 2.2 L.
With the power and torque increases, the 2.4 L cars also got a newer, stronger transmission, identified by its Porsche type number 915. The 915 did away with the 901/911 transmission's "dog-leg" style first gear arrangement, opting for a traditional H pattern with first gear up to the left, second gear underneath first, etc. To improve handling Porsche relocated the oil tank from its position behind the right rear wheel to in front of it.
1974 – 1977 2.7 Liter (G, H, I & J series)
In 1974 the engine size was increased to 2687 cc and fuel injection was largely standard. Impact bumpers ere introduced to conform with low speed protection requirements of US law and bumpers were so successfully integrated into the design that they remained unchanged for 15 years.
1978 – 1983 3.0 Liter (L, M, A, B, C & D series)
Starting in 1978 the 3.0 L 911 SC became the basic 911 model. The "SC" designation was reintroduced by Porsche for the first time since the 356SC.
The first 911 Cabriolet debuted in late 1982, as a 1983 model.
1984 - 1989 3.2 Liter (E, F, G, H, I, J & K series)
1983 saw the launch of a replacement for the successful SC series. It was the 1984 911 3.2 Carrera, reviving the Carrera name for the first time since 1975. The 911 3.2 Carrera was the last iteration in the original 911 series, with all subsequent models featuring new body styling with new brake, electronic and suspension technologies.