When it comes to early Porsche 911s, the iconic 2.7 RS is often considered the perfect choice, yet the RSR is the main reason for the RS’s existence in the first place. Introduced in 1973, the RSR was a factory-built racing car based on the 911 chassis. For the privateer in the mid-1970s wanting to go sports car racing, this was the weapon of choice, especially for those competing in the pinnacle of GT racing.
The Renn Sport Rennen was an all out racing variant of the RS, officially known by the code M491. Starting with the lightest RSH bodyshell just 55 RSRs, all LHD were produced in a separate facility called Werk 1, which was Porsche’s racing workshop. Here the cars were built to an extremely high standard incorporating every conceivable improvement allowed by the FIA rule book at the time for their racing clients.
Today originals are highly prized and when available, change hands for sums well into 7 figures depending on their provenance, ensuring they will remain an exclusive proposition for the lucky few. Originally manufactured in 1972 as a LHD car, it was imported to the UK in 1983 possibly as an RS replica. Little is known about its early history, but when acquired by a Mr Phelan in 1993, it was certainly in this configuration. During Mr Phelan’s tenure the car was being used for sprinting and track days and there are bills from both GCR and Autofarm in the history file for its meticulous up- keep during this time.
Once returned, it became evident that the engine was not performing to its full potential, so we were instructed to carry out a full rebuild including new pistons, new bearings throughout, new lightweight flywheel, new braided brake lines, new fuel lines and then convert the induction to EFI with AT Power cross shaftless throttle bodies with a new fully programmable engine management system.
An original RSR is undeniably a gorgeous thing, however it is also totally impractical for road use, even if the 1.5-2million pounds required was available to purchase one.
£150k for a replica?
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