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1975 Porsche 934 RSR Coupe / 911 560 9114 Vehicle Information

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR photograph

1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR1975 Porsche 934 RSR
This 1975 3.0L Carrera RSR was ordered by Peter Gregg, from Porsche's Racing Development Group at Weissach. It was one of the last RSR Carrera's ever completed by the factory. Between 1976 and 1979 this car, owned and driven by Jim Busby in 1976 and Dave Cowart in 1977-79, amassed seventeen IMSA podium finishes, including eight overall and class wins such as the 1976 Camel GT IMSA events at Laguna Seca, Sears Point, Mid-Ohio, and Ontario, and the 1978 IMSA GTO Championship. Additionally, it had twenty other top-ten finishes captured at every major road racing venue and endurance event within North America.

At the end of 1976, Jim Busby sold the car to Charles Mendez (the promoter for Sebring 12-Hour), who raced the car just twice before selling to Dave Cowart. Dave raced in IMSA events for the next two years, winning the GTO class outright in 1978 and placing 4th in 1979. He then sold the RSR to Jim Mullen, who raced it at Sebring and Riverside. It failed to finish at both venues due to engine failure caused by a collapsed main oil feed line which wasn't discovered until years later when the car was dismantled (this saga is documented in the August 1990 issue of Excellence magazine. Mullen sold the car to Bill Currie of Harvard, Massachusetts in 1981. Currie, partnered with Bud Lyons, directed a total restoration on the RSR, which was only seen in public twice between the restoration and 2001. Lee Giannone purchased the Carrera in 2001, after which it did some vintage racing, such as Rolex Legends of Daytona, and Concours events.

911 560 9114 was built by the Zuffenhausen Customer Service Department. It was constructed using special 934 pre-production components such as rear trailing suspension arms made of aluminum, extra-thin body panels for lightness, a 934-style fuel cell, a front-mounted oil tank, plus a one-ff fabricated titanium spool for the 915 transaxle.

911 560 9114 was delivered to Peter Gregg/Brumos Racing in October, 1974. It represented the culmination of experience that both the Weissach racing engineers and the Brumos Racing Team had acquired during the two and a half years Gregg had raced Porsche RSRs.

This Carrera is documented in Karl Ludvigsen's book, Excellence was Expected, and is one of the few 'customer' Carreras to be so featured. In that narrative, Peter Gregg describes 9114 as 'definitely the lightest and best-handing Carrera we ever had.' Jim Busby and Dave Cowert clearly leveraged those traits on the track.


No auction information available for this vehicle at this time.

Recent Sales

(Data based on Model Year 1975 sales)
1975 Porsche 911 Carrera 3.0 RSR
Chassis#: 911 560 9120
Sold for USD$1,292,500
  2015 Gooding & Company : Pebble Beach Concours
1975 Porsche 934 RSR image  1975 Porsche 934 RSR image  

Vehicles That Failed To Sell

1975 Porsche 934 RSR's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1975 Porsche 911 Carrera RSR 3.091156091212018 RM Sothebys : The Porsche 70TH Anniversary Auction $2,000,000$2,200,000
1975 Porsche 911 Carrera RS Recreation91152016262012 Russo and Steele Scottsdale   
1975 Porsche 3-Liter RSR91156091222009 Bonhams Quail Lodge Resort and Golf Club $425,000$495,000

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1975 Porsche 934 RSR

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