1976 Porsche 934 

1976 Porsche 934

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To Be OFFERED AT AUCTION at RM Sothebys' London event, 6 November 2021.

Porsche’s first production-based turbocharged racer
One of only 31 factory-built 934 Group 4 racing cars
Outstanding six-year competition record
Upgraded to 935 mechanical specification
Fully documented, restored to original appearance

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Porsche’s 930 Turbo Carrera, unveiled in 1975, was the company’s fastest-ever production car to date, and the company quickly took it racing in Group 4, replacing the naturally aspirated RSR 3.0. One 934 was built for testing, after which 30 units were completed for sale to privateers.

Group 4 regulations mandated a near-standard body configuration and a minimum weight of 1120 kg. Removal of the stock seats, air conditioning, insulation, and other unnecessary items and installation of a full aluminum roll cage, additional gauges, and racing equipment left the 934 weighing a hair less than a well-equipped 930. Thus, the 930’s standard electric windows were retained, along with its standard rear-deck spoiler. Porsche was even able to add some weight where needed. The chassis was reinforced, including a stiff cross-brace tied into the front suspension mounts. Bilstein coil-overs were added, and wider 16-inch centre-lock BBS three-piece alloy wheels with racing tyres (235 x 10.5 front, 255 x 12 in back) required fiberglass fender extensions. Stronger hubs and brakes were borrowed from the 917. A 120-litre fuel cell and an oil tank filled the trunk area.

934s were fitted with a three-litre, flat-fan, single-turbo engine and strengthened four-speed transaxle. Unlike its predecessor, the naturally aspirated RSR 3.0, the 934 could be handful to drive. Some owners never mastered the single-turbo’s delayed power delivery; others caught on quickly and mastered the car’s habits.

According to Porsche expert Jürgen Barth, chassis 0172 was purchased new by tyre importer Richard Leder of Hamburg. Leder ran just seven events with this 934, securing a victory at Kassel Calden on 9 May 1976, his fourth time out. Unfortunately, the car crashed a few weeks later on the first lap of the Nürburgring ADAC 1000 km. Then, in June, Leder tragically died in a road accident and the car passed to Volker Merl, who campaigned the car in the German National Championship, along with a number of smaller national races.

Merl subsequently upgraded the 934’s original engine to a stronger 930/73, and was able to win at Avus in May of 1977. Merl eventually sold his 934 to a Swiss Porsche dealer, Peter Zbinden. Often paired with fellow Swiss Edi Kofel, Zbinden entered more than 30 events in 1978, 1979, and 1980, claiming no fewer than 16 class and overall wins. Zbinden converted the car to full 935 specification in 1980 before selling it to Pierre Schaerer of Bern, who ran the car primarily in Swiss championship races and hillclimbs. In 1982 the car was sold to Peter Baumann of Zurich, who used the car in club events in company with then-Porsche Sports Director Max Welti. Baumann subsequently restored the car to its original appearance and livery.

This 934 boasts an impressive pedigree: of 69 races entered, it recorded 18 overall victories or class wins and 29 podiums. After recommissioning and fitment of new tyres, this car would be eligible for such prestigious vintage events as the Le Mans Classic, Rolex Monterey Motorsports Reunion, and others. To view this car and others currently consigned to this auction, please visit the RM website at rmsothebys.com/en/auctions/lf21.

Reference Number 669198

as of 10/16/2021

Dealer
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Lot LF21_r0026

RM Sotheby’s - London Auction  Contact  Location
Battersea Evolution Chelsea Bridge Entrance, Battersea Park  Phone  +44 (0) 20 7851 7070  City  London
LONDON
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SW11 4NJ
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Overview
Car 1976 Porsche 934
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