Vehicle History & Overview

This 1974 IROC tribute started life as a 1979 911 Turbo. Patrick Motorsports completed the conversion in late 2020. The 911 Turbo lent its factory wide bodywork, 917-derived brakes, and upgraded suspension. A fuel-injected, enlarged 3.8L flat-six pulled from a 993-chassis 911 was paired with a specially-prepared, Euro-spec 915-series 5-speed manual transmission, limited-slip-differential, and wide Fuchs alloys wrapped in period-correct Michelin TB15 tires. RSR-style front/rear bumpers and an RSR-style rear wing complete the package. Approximately 1,500 miles have been added since the owner took delivery December 2020. Per the selling dealer, the original Recaro seats will be included in the sale.

The 911 RSR was conceived and developed to compete in production-based endurance racing. Debuting in 1973, it accomplished its mission, enjoying substantial on-track success. Building on the well-established RSR legacy, Porsche created the 1974 911 RSR 3.0. Changes included an enlarged 3.0L flat-six, improved aerodynamics, and wider wheels. Identically-prepared 1974 RSRs formed the basis of the inaugural IROC series. In addition to its legendary IROC status, the 911 RSR 3.0 dominated GT-class racing, at times competing for overall victory against the prototype-class cars. 

Modifications

Modifications to this 911 are extensive and include, but are not limited to:

Mechanical:

• 3.8L flat-six engine (based on 993-chassis 3.6L engine)

  • Euro oil-cooler system

  • Hydraulic billet sport camshafts

• Modified Euro 915-series 5-speed manual transmission

  • Patrick Motorsports billet-steel flywheel/clutch kit

  • Limited slip differential

• Refreshed suspension

  • Tarrett Engineering bladed front/rear sway-bars

  • Tarrett Engineering front strut-tower brace

  • Bilstein struts

Exterior:

• Respray/exterior color change to orange

• RSR-style front/rear bumpers

• RSR-style rear wing

• Rear tow hook

• IROC-style exterior decals

Interior:

• Roll cage paint-matched to exterior color

• RS-style door cards

• Stereo deleted

• Momo Prototipo steering wheel

• Recaro seats

• Schroth harnesses

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Included Items

• Two keys

• Recaro sport seats with Pepita inserts (part of the original build)

• Bang & Olufsen Beosound A1 speaker

Additional Information

Patrick Motorsports, the original builder of this car, shows a detailed build here: Patrick Motorsports IROC Build

Videos