Lot 169

The Porsche 70th Anniversary Auction

1995 Porsche 911 Cup 3.8 RSR Evo


$250,000 - $275,000 USD | Not Sold

United States | Atlanta, Georgia



Chassis No.
Bill of Sale Only
  • Last of the air-cooled 993 RS-based factory-built Cup cars
  • The only 1995 Cup car upgraded to 1997 RSR Evo specification
  • Upgraded by Porsche Motorsports North America (PMNA)
  • Only two owners since new; never professionally raced
  • Never crashed and only campaigned in club racing events
  • Featured in the April 1997 issue of Excellence magazine
  • Includes extensive documentation from PMNA
Please note that this lot is offered on a Bill of Sale only.

Porsche Cup cars are extremely low-production models to begin with. Between 1994 and 1998, approximately only 374 993 Cup cars were produced, of which a significant number have since been written off in racing incidents or modified from their original factory configuration during competition use. In this case, a 1995 993 RS was pulled from the assembly line to create this all-out Carrera Cup race car.

During 1996, Porsche continued to develop further improvements for its Cup cars. The original owner contracted with Porsche to bring his car up to the factory’s planned development specification for 1997. That year, Porsche produced only a handful of RSR Sprint type engines for selective use in their 1997 Cup cars. They are a singularly unique engine, of which approximately only 45 were built. The sprint motor is a highly modified 3.8-liter flat-six engine with two valves per cylinder, Carillo rods, twin plug ignition, special camshafts, and butterfly valves. It contains mostly R type Porsche racing parts, including many that are fabricated by hand and some created out of titanium. The engine is coupled with unique resonance-controlled intake runners producing approximately 390 hp (SAE). Porsche authorized and made additional changes to the RSR in 1997, so they were also made to this car – installed by Andial. These included extensive bodywork, center lock wheels, and suspension upgrades using Porsche R parts.

The original owner then added a Teilert Engineering slide valve induction system, shelving the butterfly valves. Only a handful of these systems were hand-crafted by this German Engineering firm. The Cup Motronic ECM was also replaced by a Porsche EFI programable unit to accept this induction combination. With this setup installed on a Sprint motor, it produces approximately 410 hp. Furthermore, the car has uprated “Big Red” brake calipers with turbo rotors, carbon fiber brake cooling ducts, a racing clutch, lightweight flywheel, G-50 six-speed transmission, limited-slip differential and the gearing ratios have been harmonized, an aluminum hood, twin oil coolers in front fenders, a quick change exhaust system, 100-liter quick fill Premier fuel cell with a reserve baffle, and twin pumps. Other race equipment includes a Crawford wing, factory Matter roll cage (FIA certified), double adjustable dampers with nitrogen bottles, power steering, racing ABS, three-piece Speedline center-lock wheels, factory air jacking system, Recaro seats, Sabelt harnesses, and a dual-bottle GT2 fire system.

The first owner of this 911 Cup was John Ruther, the owner and President of NorthStar Motorsports in Lake Barrington, Illinois, and former President and current Director for the Chicago region of the PCA, as well as a longtime Chief Driving Instructor. Complete and original documentation, invoices and correspondence with Porsche executive management accompany the car. Porsche only sold Cup cars to those who would participate in their racing series, however, this car never competed professionally. It has been driven by only two owner-drivers, exclusively in amateur events and has never been in an accident. The Grand Prix White paint is even original, save for the lower rear valance due to heat fading from the exhaust.

Additionally, this car was featured in the April 1997 issue of Excellence magazine as well as repeatedly as an example of a Porsche-built race car in Adrian Streathers’ The Essential 993.

Never abused, well pedigreed, and heavily documented, this exceptional Cup car presents a rare opportunity to acquire a truly exceptional Porsche factory race car.