The cars were extensively modified to allow off-road driving in extreme conditions.
Endurance racer Romain Dumas led the team responsible for this achievement.
The expedition reached a height of 6,007 meters on the slopes of Ojos del Salado, in Chile.
Porsche is known to take on unique challenges that show what its engineers are capable of from time to time.
This latest project has just concluded when two specially prepared 911s reached a height of 6,007 meters (19,708 feet) up the slopes of the highest volcano in the world: Ojos del Salado in Chile.
This environment is one of the most difficult places to drive because there are no roads up there, only steep inclines of broken terrain littered with rock debris and ice fields. In addition, temperatures hover around -30˚ Celsius and there is about half as much oxygen in the air as at sea level.
To tackle all of these obstacles, the cars were extensively modified but they retained some factory components, such as the turbocharged six-cylinder engine and the standard 7-speed manual transmission. The presence of a turbocharger allowed the engine to keep more of its 443 horsepower seal-level output despite the thin air present at the altitudes that were reached by the expedition.
The first modifications came with the addition of a roll cage, harnesses, and carbon fibre seats in order to meet the required level of safety for the occupants of the vehicles.
Then, portal axles were fitted to increase the ground clearance up to 350 millimetres, and the Porsche Warp Connector was installed. This last element allows all four wheels to be mechanically linked in order to limit the losses of traction that could be experienced when the vehicle is traversing large obstacles.
Manually locking differentials are also part of the modifications and so are lower gear ratios. Combined with large off-road tires, these technologies made the 911s more capable on loose terrain and over steep hills.
In order to avoid damage that could have forced the expedition to turn around, the cars’ cooling systems were re-routed away from the ground, and an Aramid fibre underbody protection plate covered all of the major mechanical parts to allow sliding over rocks without damage.
These modifications seem to have been effective since the expedition headed back down after reaching 6,007 feet only because large ice walls made it impossible to go further.