Porsche 917 engine by Nigel Smuckatelli on Flickr.
This is Porsche’s first 12-cylinder engine it had many components made of titanium, magnesium and exotic alloys that had been developed for lightweight “Bergspider” hill climb racers.
Other methods of weight reduction were rather simple, such as making the gear shift knob out of Balsa wood, some methods were not simple, such as using the tubular frame itself, as oil piping to the front oil cooler.
To keep the car compact despite the large engine, the driving position was so far forward that the feet of the driver were beyond the front wheel axle. Drivers would tell each other that if you began to lose it on the track to turn the wheel so you would hit the barrier with the rear end of the car and not the front. In that way you might save your feet and legs
from serious damage.