The Turbo is probably one of the most charasteristic 911's of the last 35 years. Most people imagine a 911 Turbo with a big wing when they hear the name 'Porsche'.
The first Turbo was introduced in 1975. The Porsche engineers had experienced with turbo chargers on the competion Porsches and chairman Ernst Fuhrman thought is was possible to use a turbo on a production car. Therefore in 1973 a prototype '911 Turbo' was displayed at several European shows, and in 1974 another prototype 911 Turbo was shown at the Paris Motorshow. When the Turbo went on sale in 1975 it had a 3.0 liter 260 bhp engine and was full of luxury.
Airconditioning, electric windows, a leather interior, tinted glass, headlamp washers and Bilstein shocks were all standard on the Turbo. The modifications were so extensive the car bore it's own type number: the 930.
With it's huge rear wing, widened wheel arches and big tires, the Turbo looked faster then any other 911. The great look of the Turbo in combination with the powerfull engine made the Turbo a desirable car.
The widened wheel arches of the Turbo were protected against stone-chips by 'shark-fins' that would become charasteristic for the Turbo. The front and rear wings were derived from the 3.0 RSR and were made suitable for road-use. They increased down force at high speeds. The 'Whale-tail' with it's two grilles fed extra cooling air to the engine. In 1976 the second grille in the wing was enlarged. The picture left shows a pre-1976 car.
In 1978 the engine capacity was increased to 3.3 liter and an intercooler was mounted. Together with some other modifications the 3.3 liter engine now produced 40 bhp more (now 300 bhp in european spec). The same year the rear wing was again revised. The two separate grilles were replaced by one larger smooth surface, and was placed a little higher, to make room for the intercooler. The new wing can be recognised by the 'curled' sides, and the flat top.
Brakes were also upgraded, making the Turbo an even better driving machine.
The Turbo was now also available in Targa, or Cabriolet versions. For1990 there was no Turbo available, but in 1991 a new Turbo, based on the Carrera 2, was introduced. This car featured a upgraded 3.3 liter engine, and a widened version of the Carrera 2's bodywork. This body was also the basis for the highstrung Turbo S2, only 25 of which were produced. I have very little information on this S2. If anybody knows more, please tell me!
The Turbo S
In 1992 Porsche showed the Turbo S at Geneva's Motorshow.
This prototype was built to honor the Turbo's third IMSA Supercar crown. On the side it reads 'Supercar Chapion' and an IMSA logo was placed beside it. The production S didn't get this script. The engine was tuned to deliver 381 bhp. and had a lot of light weight features. The car weighed a healthy 120 kg's less then a standard Turbo, making the Turbo S seriously fast. The doors, engine lid and the hood were made from carbon fibre, while the wheel arches had extra air inlets to cool the engine. Three piece 18 inch wheels were standard. Only 80 Turbo S's were built.
In 1993 the enige capacity was again increased, now to 3.6 liter. The 3.6 featured the same18-inch modular wheels that were used on the Turbo S. And can easily be recognised by the Turbo 3.6 badge. There was also a Turbo 3.6 based 911 Turbo S, of wich only 93 were built. On this car I don't have much information either, so if anybody knows more...?!
Since 1981 the flat noses had been built by the Zuffenhausen repair departement. But only in 1987 the flat nose was officialy listed as an option for the Turbo. Only very few were built by the factory. About 80% of the flat noses are 'fake'. Early flat noses had the headlights mounted in the front wing, while later models were equiped with folding headlights. Behind the bumper and additional oil-cooler was placed. A total 236 were built between 1982 and 1987.
The Turbo has always been a luxurious car. The first Turbo's had a leather interior as standard. On later models all sorts of fancy fabric were used for the interior. The one in the picture was offered on the 1978 Turbo.
In 1996 a Turbo based on the 993 series was launched. This Turbo is powered by a twin-turbocharged powerplant, producing 408 bhp, and featured a six-speed gearbox and four-wheel drive. The bodywork has a less evocative rear-wing and flares that are more integrated with the fenders. The new styling of the twin turbo, make it look elegant yet powerful. The wheels are 18 inch in diameter. The five spokes are hollow, for a weight saving of about 20%. The front wing has air-ducts that lead extra cooling air to the brakes. Those brakes are even more powerful then the brakes on the previous Turbo's. The can stop the Turbo from 100 km/h in 2.6 seconds, from 160 km/h in 3.8 or from 200 km/h in just 5 seconds!
The 911 GT2 is not a subtle car. This car was built for one thing: pure speed. It was launched in 1996 to comply with the international GT standards. The GT2 is powered by a tuned 911 Turbo engine, with modified bodywork, and the Carrera 2's two-wheel drive system. Porsche also put the GT2 on a diet. It is 200 (!) kg's lighter then a standard Turbo, wich makes a big difference in performance. To achieve this several body parts are made of aluminium, and the widened wheel arches are made from plastic.
Porsche recently has introduced the 996 Turbo. The styling is quite different from the previous Turbo's and from the 'normal' Carrera. The 3.6 litre engine is based on the GT3/GT1 engine. It is watercooled and has twin KKK turbo's. It produdes 420 bhp, about 16 bhp more than the the 993 Turbo.