Porsche 959 “Gruppe B” prototype – Spark

Gruppe B
1983 Porsche 959 “Gruppe B” prototype 
Spark - MAP02004715 (resin)

Published 06/21/18

In 1981, Helmuth Bott, Porsche’s chief engineer at the time, had an idea for a new 911. The big deal about this new car was that it would have all-wheel drive. But to facilitate things, he also pitched the new car as a race car for Group B. He got approval, but costs needed to be low. So instead of a new engine, the engineering department used the existing Group C cars’ unit.

The boxer-6 Typ 935/76 engine was expanded to 2849 cm³ but kept the titanium connecting rods and the four gear driven camshafts. The engine block was air-cooled while the four valves cylinder head were water-cooled, like the race engine. It also had two turbos ingeniously set up in a sequential way to reduce lag, producing 450 hp. Though not openly admitted by Porsche, the chassis was basically a regular 911 (930) chassis, but with an aluminum and Kevlar composite body with a Nomex floor.

Gruppe B
Tough for me to say that a pearl-white car looks good.

The 959 also received an unique 6-speed manual gearbox with five forward speeds plus a “gelände” (terrain) off-road gear, as well as reverse. But one of the really exceptional traits of the the 959 was the PSK system. The Porsche-Steuer Kupplung was at the time the most advanced all-wheel-drive system in a production car, capable of dynamically changing the torque distribution between all four wheels, giving the car a fantastic adaptability both as a race car and as a street car. And to make things even more refined, the car had Wabco anti-lock brakes, rims were “Demloc” rims (a flat tire won’t leave the rim and can be driven for around 100 km), wheels had pressure monitors and ride height was adjustable by the driver.

Gruppe B
Almost done – I still need an S.

With the development of the project, Porsche saw the 959 basically as their car for Group B racing. To that effect, they planned on producing 200 to homologate the car. Therefore, the prototype became known as the Gruppe B Studie car. It debuted on October 10th, 1983 at the Frankfurt Motor Show. The production of the 959 only started in 1985, but it never raced in any Group B race. However, it was the most exceptional street legal car of the 80’s.

So the 959 being the THE Car, the car that Mercury drives to go to the gym, I also had to have the prototype version in the Garage. Spark did a fantabulous job on the Gruppe B, and the pearl white paint job is just stunning. For the refined collector (that translates to 959 fan) I think the Komfort model is the one. Specially if from Spark. But this one looks so good that I think it comes in a very close second.

Leave a Reply

Your email address will not be published. Required fields are marked *