Porsche - Porsche 911S

Original Porsche 911S (1976) 

In august 1973 the 911 (150 bhp), 911S (175 bhp) and the 911 Carrera (210 bhp) replaced the older T-, E-, S- and RS-models. As from model year 1974 three significant changes were made. In 1974 was the introduction of impact bumpers to conform with low speed protection requirements, these bumpers being so successfully integrated into the design that they remained unchanged for 15 years. In 1974 the engine size was increased to 2687 cc giving an increase in torque. The use of K-Jetronic CIS Bosch fuel injection in two of the three models in the line up, the 911 and 911S models, retaining the narrow rear wings of the old 2.4, now had a detuned version of the RS engine producing 150 and 175 bhp respectively.

The 911S yielded 10 bhp more than the E-model from the year before. Because the 911S model was fitted with the new injection system, the S also had a broader torque that reaches its maximum value (235 nm) at, a lower, 4000 rpm. This improved the drivability of the car considerably since the driver needed less gear changes. The gasoline consumption was improved also. In the United States there were other emission demands so the 911S models in the US had a reduced power of 165 hp.

As demand for more power continued Porsche chose for using the 3.0-liter engine of the 930 Turbo but without the turbo charger in all 911 models from 1976. This meant, unfortunately, the end of the 2.7-liter engine as it was not further developed. The 2.7 liter boxer engine remained until 1977 in production after which it was replaced by the more powerful 3.0L engine.