Finding a 1972 Porsche 911 Carrera RS 2.7 usually involves looking at production models, but this specific chassis offers a deep look into the factory development process. Originally built as a 2.4 S model, this car was pulled into the engineering department to serve as a rolling laboratory. It represents the bridge between standard production and the homologation specials that would later dominate the racing world.
Experimental Roots in Weissach Engineering
The Porsche development department in Weissach used this car to test components that would eventually define the RS brand. Most notably, engineers fitted it with an early version of the ducktail spoiler to improve high-speed stability. This specific car also carried experimental fluorescent yellow paint, a color so striking it required special government permits for road use in Germany.
Original Prototype Equipment and Instrumentation
Inside the cabin, the dashboard features a unique panel housing additional gauges for oil pressure and voltage. These tools allowed factory engineers to monitor the prototype mechanical systems during rigorous testing phases. The interior remains true to its testing heritage, featuring black leatherette and pearl cord seats that reflect the functional nature of a factory workhorse.
Heart of the Rennsport Engine Development
The mechanical soul of this 1972 Porsche 911 Carrera RS 2.7 is its pre-series 2.7-liter flat-six engine. This unit, numbered 6630027, features Bosch mechanical fuel injection and was officially designated as a 911 SC-F unit. It served as one of the very first iterations of the 210-horsepower engine that would eventually make the production RS a legend among enthusiasts.
Documented Ownership and Restoration History
Following its time as a test mule, the car was sold to an engineer with close ties to Porsche’s development head. It remained in his care for over four decades, even traveling to Algeria where it was driven under special permits. Marque specialists in Germany recently restored the car to its original development specifications, ensuring the prototype details were perfectly preserved for the next owner.
Performance Specs and Prototype Power
The 1972 Porsche 911 Carrera RS 2.7 development car produces 210 horsepower from its 2,687cc displacement engine. This prototype drivetrain was factory-rated for a top speed of 149 mph, a blistering figure for the early seventies. Its lightweight construction and mechanical fuel injection provide the raw, analog feedback that defines the early 911 racing experience for modern collectors.
Summary of a Porsche Engineering Milestone
This 1972 Porsche 911 Carrera RS 2.7 stands as a physical record of the internal battles fought by engineers to create a racing icon. It carries the weight of history in its unique engine number and experimental paintwork. For a serious historian, this development car offers a rare connection to the secret testing days at Weissach that eventually birthed the world’s most famous sports car.
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Source: rmsothebys.com
