Tag Archives: 935/78

Group B Race Car – Porsche 961#WP0ZZZ93ZFS010016

One afternoon soon after taking over as CEO of Porsche AG American Peter Schultz noticed a chart on the wall of the office of his Chief Engineer Dr Helmut Bott which outlined the developement schedules for Porsche’s three models the 924, 928 and 911, the first two extended far into the future while that for the 911 came to a stop in 1981.

Porsche 961, Le Mans 24 Hours

Schultz took a marker pen and walked over to the chart and drew a line extending the 911’s development clear off the chart, much to the relief of Dr Bott who set about initiating the design of a new concept car which would become a flagship for the future development of the 911 called the Porsche Gruppe B.

Porsche 961, Le Mans 24 Hours

The Gruppe B, which was first seen at the Frankfurt Motor Show in October 1983 was designed with new GT regulations for race and rally cars in mind and made use of emergent all wheel drive technology and a version of the Bi Turbo 750 hp 3.2 litre 195 cui flat 6 with 4 valves per cylinder in water cooled cylinder heads that had been developed for the 1978 Porsche 935/78 known as Mody Dick.

Porsche 961, Le Mans 24 Hours

The Gruppe B was developed into a rally raid version called the 959 which won the Paris Dakar Rally at it’s second attempt with René Metge and Dominique Lemoyne in the cockpit in 1986. A US$ 225,000 road version of the 959 appeared in 1985 of which 300 examples were built up until 1987.

Porsche 961, Le Mans 24 Hours

Porsche also developed a single road racing version of the Gruppe B, today’s featured car, known as the 961. It had been anticipated that several manufacturers would build Group B race cars but in the end only the Ferrari 288 GTO saw the light of day and then only as a street car.

Porsche 961, Le Mans 24 Hours

The Porsche 961 made it’s competition debut at the 1986 Le Mans test weekend with twice Paris Dakar winner René Metge sharing the wheel with Claude Ballot-Léna, because there was only one 961 in existence instead of the mandated 20 required for Group B the 961 was entered in the even more relaxed IMSA GTX class. Metge set 10th fastest time in the official Le Mans Test Session but the car retired from the first of two sprints with transmission failure.

Porsche 961, Goodwood Festival of Speed

The 961 still running in the GTX class, then appeared at the 1986 Le Mans 24 hours, as seen in the top two photographs, for which it qualified 26th and came home a respectable 7th. The only Group B runner in this race was a venerable BMW M1 a design dating back to the 1970’s which crossed the finish line with it’s hazard lights on to a huge cheers from the crowd but 60 laps behind the 961 and unclassified due to running it’s last lap too slow.

Porsche 961, Goodwood Festival of Speed

In October 1986 Günter Steckkönig and Canadian Kees Nierop drove the 961, now entered as a GTP Prtotype in the Daytona 3 Hour endurance race for which they qualified 29th and came home 24th after experiencing multiple tyre failures on the banked section of the track.

Porsche 961, Goodwood Festival of Speed

For 1987 the 961 carried the Rothmans livery like it’s sister Group C 962C’s and was driven at the Le Mans Test day by Steckkönig and Claude Haldi who set 16th fastest time with the car now entered in the rationalised IMSA class.

Porsche 961, Goodwood Festival of Speed

A month later Haldi was teamed with Metge for the Le Mans 24 hour race and after the Porsche team ran out of 962C’s Nierop was added to the 961’s driving strength in place of Steckkönig too.

The #203 961 qualified 31st on the grid and was running as high as 11th when around 2/3rds distance Nierop crashed at Indianapolis corner after experiencing a gearbox problem. While trying to return to the pits the 961 caught fire and eventually came to a stop and retirement.

With no sign of any Group B competition on the race track Porsche abandoned the 961 with just one example built and never having actually entered the car in the class it was designed to compete in. The 961 was subsequently rebuilt for the Porsche Museum and demonstrations, it is seen in the last four photo’s at Goodwood Festival of Speed running on out of period pattern BBS wheels.

Thanks for joining me on this “Group B Race Car” edition of “Gettin’ a li’l psycho on tyres” I hope you will join me for a look at some Porsche Automobillia tomorrow. Don’t forget to come back now !

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Moby Dick – Porsche 935/78 #006

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The Porsche 935/78 was a one off vehicle built to win the 1978 Le Mans 24 hours and was the ultimate works development of the, then 15 year old, 911 which would not be topped until the advent of the 911 GT1 built in the late 1990’s. Notice that in preparation for Le Mans the drivers seat was placed on the right hand side optimising weight distribution for a race run on a clockwise track.

Thanks to a rule made at the request of arch enemy BMW the body was lowered 10cm 3.9 inches over the standard 911 by cutting out the standard floor plan with the engine like wise now lowered the gearbox was inverted to raise the drive shafts closer to their original height. Apart of from the front windscreen almost every body panel was optimised to maximise the top speed on the 4 mile Mulsanne straight where 235 mph was eventually achieved.

The 935/78 was equipped with a 750 hp 3.2 litre 195 cui flat 6 with 4 valves per cylinder in water cooled cylinder heads, a first for Porsche who had always raced air/oil cooled motors up until this time.

The car seen here driven Jacky Ickx and Jochen Mass at the 1978 Silverstone 6 hour race, a warm up for the Le Mans 24 hours, romped away from the opposition, mostly private Porsche’s with a single works BMW driven by Ronnie Peterson and Hans Joachim Stuck, finished a ridiculous 7 laps ahead of the rest of the field.

Stommelen/Schurti qualified ‘Moby Dick’, as the 935/78 was known, third on the grid at Le Mans however a silly stunt in which the car was driven on the road from Porsches garage outside the circuit to the circuit on race day went horribly wrong when predictably the car got caught in race day traffic causing the engine to over heat which created an oil leak. The subsequent loss of performance meant the car could only finish 8th.

935/78 #006 appeared twice more in 1978 but disgraced itself with two retirements and has since been consigned to the Porsche Museum. Joest Racing built two further 935/78’s from factory drawings in 1981.

Hope you have enjoyed today’s 235 mph edition of ‘Gettin’ a lil’ psycho on tyres’ and that you will join me again for another turbo charged blog tomorrow. Don’t forget to come back now !

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