19-20 August 2011

Previous Next

Lot 155

1972 Porsche 911 S/RSR

  • Chassis no. 9112300030

$200,000 - $250,000

3.0-liter air-cooled, horizontally opposed six-cylinder twin-plug racing engine, five-speed Type 915 manual gearbox in rear transaxle, limited-slip differential, RSR-type fully adjustable four-wheel independent suspension with Bilstein coil-over shock absorbers, and 930 Turbo-type four-wheel hydraulic disc brakes. Wheelbase: 89.3"

- A well-known 911 S upgraded to RSR specification in period
- Competition history includes 2nd in class and 7th OA at Sebring
- Recent and extensive work and FIA-legal updates by Andy Prill
- Complete with UK road registration papers and current USA HTP

In the early 1970s, Porsche took over in sports car racing where Ferrari left off, encouraged by the FIA’s shift from exotic sports prototypes to production-based machinery. Logically, Porsche selected its proven 911 for further development as a racing car and homologated the RS 2.7 Carrera in 1972 for Group 4 competition by taking the 2.4-liter 911 S and subjecting it to a myriad of improvements. Next, the much more radical RSR Carrera was created to meet the new Group 5 rules.

In their RSR, Peter Gregg and Hurley Haywood famously charged to victory in the 24 Hours of Daytona, the first race of the 1973 World Manufacturers’ Championship. By season’s end, the Carrera RSR had won the European championship for Grand Touring Cars, the Camel GT Challenge Cup (IMSA), the Targa Florio and numerous races in the SCCA’s Trans Am Championship. From this point, the mighty RSR utterly dominated GT racing for many years to follow.

The car offered here, Porsche 911 S/RSR chassis 9112300030, was a 2.4-liter 911 S when new in 1972, and then it was subsequently built and up-rated to 1974 IMSA 3.0 RSR specification and was raced in period by well-known Porsche aficionados Tim Selby and Earl Rowe. They were very prominent in Porsche circles for their racecars, which ran very successfully at some of the most high-profile races throughout the United States at circuits including Daytona, Sebring and Watkins Glen. Factory parts for the racing upgrades were bought directly from Frau Behr at Porsche AG, and Indy car builder Grant King built the roll cage. Mason Racing built the racing fuel cell and oil tank to IMSA regulations. The history of this car is quite well known, continuous and well accepted in Porsche circles as a car that was up-rated in period.

Many correct parts were used in the upgrading of the car, and it went on to run at the 12 Hours of Sebring at least three times (1981-1983), where it finished as high as 2nd in GTO and 7th overall in 1981. Recent and extensive work was performed by Porsche marque expert Andy Prill, making the car both great fun to drive and remarkably versatile. As such, it is equipped with a multitude of FIA-homologated parts including its current 3.0-liter engine, which is based on a 930 Turbo crankcase. The Type 915 five-speed gearbox is equipped with an RSR spray bar, oil pump and oil cooler, and the transaxle carries a limited-slip differential. The brakes are 930 Turbo-spec units, FIA-approved replacement parts. The suspension is Bilstein RSR-type with front and rear coil-over shocks, and the wheels fitted are 9" x 15" front and 11" x 15" rear, which are homologated for RSRs up to 1974. The 911 is also complete with a set of larger wheels that would be acceptable for RSRs running to 1975/76 racing specifications. Other FIA-approved items include new seats and harnesses, a new 100-liter fuel cell, a new fire-suppression system and fog/rain lamps. The 911 also includes a quick-release front bumper and a front-mounted endurance oil tank, and the electrics are fully re-wired.

Eligible for many vintage-racing series and events and offered complete with UK road registration papers and current USA HTP documents, this 911 S/RSR often ran against more sophisticated machinery and not only finished – it finished well.


Please note that should the buyer be a resident of the United States an additional duty of 2.5% is payable on the final sale price of the vehicle, including all applicable taxes and commissions.

Please contact our exclusive automotive transportation partner, Reliable Carriers, for a shipping quote or any other information on the transport of this vehicle.

Alain Squindo

Detroit, Michigan

Alain Squindo joined RM Auctions in 2007, after graduating from Georgetown University in Washington, D.C., with a degree in History. R... read more

Alexander Weaver

+1 310 559 4575
California, United States

Alexander Weaver joined RM Sotheby's in 2011 as a car specialist, after graduating from Furman University in South Carolina. Born ... read more

Annette Abaci

+49 (0) 40 441 95 737

With post-secondary degrees in Economic Science and Mechanical Engineering, Annette Abaci initially worked part-time at Mercedes-Benz ... read more

Augustin Sabatié-Garat

+44 (0) 20 7851 7070
United Kingdom

Augustin Sabatié-Garat joined RM Europe in 2012 as a senior car specialist, after more than a decade in the collector car hobby... read more

Barney Ruprecht

+1 519 352 4575
Ontario, Canada

Barney Ruprecht graduated from Boston University in 2013 with a degree in Hospitality Administration. In ... read more

Dan Warrener

+1 519 352 4575
Ontario, Canada

Possessing a degree in Economics from Brandon University, Dan Warrener spent the initial stages of his career working around the globe... read more

David Swig

+1 415 302 2247
California, United States

David Swig joined RM Sotheby’s West Coast division as a car specialist in May 2015. He is a lifelong automobile enthusiast and g... read more

Don Rose

+1 617 513 0388
United States

Don Rose joined RM Auctions in 2006, after many years of professionally trading sports and classic cars, and after earning a reputatio... read more

Donnie Gould

+1 954 566 2209
Florida, United States

Donnie Gould joined the RM team in 2002 as a partner and Car Specialist after more than two decades in the vintage automobile auction ... read more

Gord Duff

+1 519 352 4575
Ontario, Canada

Gord joined RM Sotheby's in 1998, initially responsible for the transportation and logistics of the company’s auction and re... read more

Ian Kelleher

+1 310 559 4575
New York, United States

Ian Kelleher began his automotive career immediately following his graduation from Oberlin College, with a B.A. in Politica... read more

Jack Boxstrom

+1 818 703 2816
Ontario, Canada

Jack Boxstrom joined RM Sotheby's in late-1996 to assist with the recently acquired, and subsequently record-breaking, auction in ... read more

Jake Auerbach

+1 917 213 5672
Ontario, Canada

Jake Auerbach got his start in the automotive industry at an early age, spending his summers during high school working at a classic c... read more

Jonathan Sierakowski

+1 519 352 4575
Ontario, Canada

Jonathan Sierakowski developed a passion for classic cars while working at a restoration shop as a teenag... read more

Kurt Forry

+1 260 927 9797
Indiana, United States

Kurt Forry joins Auctions America with more than a decade of experience on the North American auction scene and a well-rounded knowled... read more

Mike Fairbairn

+1 519 352 4575
Ontario, Canada

As one of the three founding partners of RM Sotheby's, Mike Fairbairn has a longstanding interest in the classic car industry. Gra... read more

Pete Fisher

+1 519 352 4575
Ontario, Canada

Pete Fisher was first introduced to antique cars in high school, working for Classic Coachworks in his ho... read more

Peter Wallman

+44 (0) 20 7851 7070
United Kingdom

Peter Wallman joined RM Europe in 2007, following nearly two decades in the international advertising industry, read more

Rob Myers

+1 519 352 4575
Ontario, Canada

As chairman and founder of the RM Group of Companies, Rob Myers’s entire career has been devoted to the classic car industry. Ro... read more

Shelby Myers

+1 310 559 4575
California, United States

Shelby Myers grew up with the classic car industry infused into every aspect of his life. He had the unique opportunity to watch the R... read more

Tonnie Van der Velden

+31 653 84 19 60

Tonnie Van der Velden joined RM Sotheby’s European division in September 2015 as a car specialist. A... read more