Restoration

of a 1975 Porsche 930 Turbo

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In the beginning of the seventies Porsche was very successful with Turbo charging racing engines. Especially the big 5.0 litre Can Am cars (projectiles) that were blown by two Turbo chargers. Back in 1973 when Mark Donohue became Can Am champion with the 917/30 Spyder the engine developed more than 1.200 bhp. In 1974 Porsche developed the 2.1 Litre Turbo engine, in the widened RSR body. With this car Van Lennep and Müller did finish 2 nd in the 24 Hour race of Le Mans.

By 1974, in the aftermath of the oil crisis Porsche introduced the 911 Turbo. The 911 Turbo (internally known as 930) was the flagship of Porsche, with its 3.0 litre engine and single Turbo. Porsche was the first company to adapt this Turbo technology to their road cars. The Turbo became the top of the crop and was considered being a supercar in the same league as the Ferrari Daytona, the Ferrari 365 GTC/4, and the Lamborghini Countach. Posters of these cars adorned many boys rooms.

In 1975 the first production 911 Turbo’s were sold to the customers. The 1975 Turbo is considered to be the holy grail amongst Turbo lovers. In the very first year of production Porsche only build 284 cars. These Turbo’s are the holy grail as they actually were build as the 1974 Carrera RS 3.0. Meaning that these Turbo’s were the lightest ever, and got there DNA in the racing car that was the RS 3.0.

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Not all that many of them survive, mostly because the bodies were not yet galvanized. So finding a good 911 Turbo of 1975 is becoming rare. A car such as this one with a great history, with a solid body and with the production numbers written on different parts (meaning the car never has been taken apart) is even rarer. Although the car was solid and showed few rust patches it as decided to restore it.

This meant taking the car apart completely, then stripping the body to bare metal. This stripping was done by hand. Then an assessment was made of what parts needed to be replaced by NOS parts and where patches of metal were going to be welded in place. Much attention was given to originality. And therefore where possible NOS parts were used.

Thereafter the body was primed and painted. The aim was to have a final paint thickness that would be the same as the factory finish.

In the workshop the different mechanical parts were taken apart, restored, repainted, plated and build together again. The interior was send off to an upholster who worked for 40 years in Porsche’s upholstery department (In his time at Porsche he was responsible for quite some interiors, like this 1975 Turbo). As the interior was a combination of leather and tartan, it was an utterly difficult task to get it right again. The exact texture of the tartan was searched, found an stitched together. The tartan stripes needed to run in straight lines over the seats and the door panels. Our mechanics did reinstall the original leather bordered carpets, the door panels, the seats etc… The interior does look as it came out of the factory some 41 years ago.

Today the car is rebuild for about 80 %, and the work still goes on. When the body and its ancillaries will be complete the engine will be attacked. The engine will be rebuild with the same attention to detail and period exactness. The aim is to be able to dyno run the engine and achieve 260 bhp, as Porsche did in its time.

Watch this space for the further evolution in the rebuild of this “historically important” 911 Turbo.