With the introduction of the new 3.0-liter displacement limit for Group 5 World Championship Sports Cars, which rendered the magnificent 917 obsolete, Porsche channeled its efforts into two very different programs for 1972 rather than continuing with a Works WSC effort.
On the one hand, Porsche would pursue the 1972 and 1973 Can-Am Championships with its formidable Penske-run 917/10 and 917/30 behemoths. It also continued development of the 911-based RS and RSR variants for the GT class for International long-distance racing.
Typically, the staff at Weissach managed to further reduce the weight from the already lightweight Carrera RS 2.7, while simultaneously increasing power without compromising reliability. By using GRP panels and plastic side windows, and stripping out all but the most essential items of interior trim, the RSR barely tipped the scales at 900 kg dry. For 1974, a new 3.0-liter engine with Bosch twin-spark ignition was employed, with a resultant power increase to 330 bhp. The now-redundant 917 parts bin was raided for brakes and center-lock wheels, while flared wheel arches, a front airdam, and the now iconic “tea-tray” spoiler gave the car a very aggressive posture.
This particular car was built in 2007, commissioned by John Chester, who was very good friends with Porsche aficionado Paul Howles, who owned numerous Porsche 911 race cars including and original RSR. A correct 911S shell was forced and the car was sent to Germany for necessary chassis work to recreate to FIA correct 3.0L RSR specification. This work was done at Knoll Motorsport of Munich Germany. The engine was built by Porsche 911 performance specialist Supertec Performance in the USA, with bills in the file accounting for over $40,000. The car has been finished to a very high standard.
The current owner acquired the car in 2009 with the idea to race the car, however has only ever used the car on a couple of track days. Recently the engine has been refreshed, all parts have been supplied by Porsche specialist in the North West of England, Tech 9 and built by an engine build in Warrington. Ready to be enjoy and the perfect example to use on tours such as the Modena Cento ore or the Tour Britania. This is a great example that you could not build for the asking price.
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