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  Article Image gallery (81) Chassis (3) Specifications  
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Country of origin:Germany
Produced from:1979 - 1980
Numbers built:3
Internal name:930
Successor:Porsche 935/81 'Moby Dick'
Author:Wouter Melissen
Last updated:January 26, 2018
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Click here to download printer friendly versionPorsche ceased its factory racing effort with the 935 at the end of 1978, and built the last customer cars early in 1979. This was certainly not the end of the 935's racing career as Porsche did continue to supply components to customer teams. So many components, in fact, that the teams could build up complete cars, which the likes of Joest Racing and the Kremer Brothers duly did. For homologation purposes, these privately built machines were still referred to as Porsche 935s.

Of the complete 935 body-shells made available by Porsche, Joest Racing received the very first. Inspired by the lightweight 'Baby' built by Porsche in 1977, the mechanics cut off the sheet metal fore and aft of the cockpit. These sections were replaced by tubular subframes, which were lighter and allowed for more freedom for the suspension mountings. Joest also modified the Porsche twin-turbo engine by using the air-to-air intercoolers from the team's 908/4 Turbo, which were more efficient than the water-to-air system fitted as standard.

Completed in the summer of 1979, the first 935 J was clothed with a factory supplied body. It was entered by Joest Racing in the Mainz-Finthen round of the DRM championship for Rolf Stommelen. The talented German finished a promising fourth overall and second in class behind the Kremer Brothers' 935 K3. Stommelen won at the next round at the Norisring but he could not repeat that result in the remainder of the season.

During the 1979 season, Volkert Merl brought his factory built Porsche 935/77A to have it updated to 935 J specification. This was first raced late in the that year's DRM season with a second place finish for Merl as the best result. For the 1980 season, the bodywork was redesigned with a nose that would become typical for the Joest 935s. In addition to updating the two existing cars with the revised bodywork, Joest Racing built two additional cars for the new year; one for themselves and the other for Gianpiero Moretti.

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  Article Image gallery (81) Chassis (3) Specifications