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1979/1981 PORSCHE 911 TYPE 935 DP35

Posted by WindingRoad about 1 week ago
Auction

1979/1981 Porsche 911 Type 935 dp35 Group 5 Competition Coupé

Chassis no. 9309800947/DP-935-8900-1

•Rare Porsche competition model

•Based on a 1979 Porsche 911 Turbo

•One of three built by dp motorsport

•Believed used in the 1999/2000 Swedish GTR Championship

Following the cancellation of its Can-Am racing venture at the end of 1983, Porsche turned to its 911 road-car as the basis for a new competitions programme, masterminded by Dr Ernst Fuhrmann. Suitably modified, the production 911 had become a favourite with privateer entrants in the GT class, but for ultimate success something more specialised would be required. 

The factory' first step along this road would be the RSR, based on the production Porsche 911 Carrera RS. Driven by Peter Gregg and Hurley Haywood, an RSR won at Daytona in March 1973, and then two months later the same car was driven to victory in the Targa Florio by Herbert Muller. By the season's end Porsche had won the first European GT Championship with the RSR. 

Development of the RSR had involved extensive revisions to the stock 911's aerodynamics, resulting in the adoption of a deep front air dam and 'duck tail' rear spoiler, and these devices would undergo dramatic increases in size as development progressed.

With the regulations for international sports car racing about to change, Porsche sought to exploit the new rules by applying the turbo-charging technology it had developed for the Type 917 Can-Am cars: the result was the Turbo-Carrera. Running in the prototype class, a factory Turbo-Carrera finished 2nd overall at Le Mans in 1975, hinting at what was to come. When the FIA finally agreed the new formula for 1976 (one year late) it comprised three distinct categories: Group 3 (mass production); Group 4 (limited production); and Group 5 (extensively modified). Group 5 would give Porsche the opportunity to demonstrate its imagination and engineering prowess to the full as it developed a succession of exotic prototypes retaining only the most tenuous of links with the production 911. 

For Group 4 competition, Porsche offered the suitably modified Type 934 customer car, while for Group 5's 'silhouette formula' the factory developed the Type 935. Despite a season of mixed results, the highlights of which were wins at Mugello, Vallelunga, and Watkins Glen, plus 4th place at Le Mans, the World Championship of Makes was finally secured with victory in the final round at Dijon. Capitalising on this brilliant success, Porsche proceeded to build a limited run of customer Type 935 cars for 1977. This would prove to be a shrewd move, for when the Martini-sponsored works team faltered, the customer 935s were there to pick up the baton, winning five rounds of the World Championship of makes in 1977 to the factory's four, making it a clean sweep for the Stuttgart manufacturer. A series of customer cars based on the 935/77 followed. 

Over the winter of 1977, Porsche developed its most daring – some would say outrageous – interpretation of the Group 5 'silhouette' formula: the Type 935/78. Known as 'Moby Dick', after Herman Melville's eponymous whale, this amazing creation looked just like an out-and-out prototype into which had been spliced the cabin of a road-going 911, so extensive were the aerodynamic extensions. After a season that showed much promise but only a single win (at Silverstone), the Type 935/78 was retired, its demise coinciding with Porsche's withdrawal from racing. However, such was the extent of Porsche's customer base that it continued to be well represented by privately entered Type 935s; indeed, in 1979, privateer 935s won five of the nine rounds of the World Sportscar Championship, securing Porsche yet another title. 

Based on a 1979 Porsche 911 Turbo (chassis number '9309800947'), the car offered here was subsequently rebuilt to dp35 specification by dp motorsport in collaboration with their concessionaire in Sweden, dp-Sweden. Upon completion it received their own chassis number, 'DP-935-8900-1', and was delivered in March 1981 to Sweden, subsequently competing in various races in Scandinavia. It is one of only three such original dp35 Group 5 competition cars. This car's provenance is confirmed by an accompanying letter from dp motorsport, signed by their founder and managing director, Ekkehard Zimmermann. 

Founded in Overath near Cologne, Germany, dp motorsport started out designing and building body parts for the Kremer Porsche racing team. In 1975 Zimmermann developed a completely new Porsche 911 racing body for Kremer, and these dp-modified cars proved highly successful, winning several national titles. In 1979, a dp-modified Porsche 911 Type 935 K3 won the Le Mans 24-Hour race outright, and these K3 variants achieved similar success in the United States' IMSA series. When Group C replaced Group 5, dp motorsport was at the forefront again, building special bodies for the Kremer and Joest Porsche teams' Type 956/962 sports prototypes. The company also offered, and still offers, a range off modifications for road-going Porsches, and are still building cars for historic and modern racing.

It is believed that this dp motorsport Type 935 was used in the 1999/2000 Swedish GTR Championship by Hasse Berglund before being purchased by German historic racer, Professor Michael Rudnig. It is offered with a DMSB-Wagenpass (dated 3rd April 2009) for the Group H, Youngtimer, and CGT categories, which also attests that this a genuine Group 5 car. After a recommended thorough check, this stunning Porsche, with its powerful twin-turbocharged engine, will surely be a serious contender in classic racing.

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