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Porsche 911 (F-Series) Race Guide

Oldest
Porsche 911

Porsche 911 R (1967 – 1968)

Based on the 911S, the 911 R was produced by Porsche to compete in the FIA’s GT 2.0 category. To make it competitive, the 911R was powered by a flat-six engine, Type 901/22 from the Porsche 906, capable of 210 hp. It went on a diet too, with weight savings coming from everywhere, getting the 911 R down to just 1,800 pounds dry. Four prototypes were constructed after which Porsche had coachbuilder Karl Baur build another 20 customer cars. In the end, because of the modifications to the 911R, the FIA refused to homologate the car.
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Image credit: Tim Scott / Fluid Images
Porsche 911

Porsche 911 T/R (1968)

To homologate the 1968 911 for competition purposes, Porsche began with the Spartan 911 T which were a full 54 kg (118 pounds) lighter than their 'S' siblings. Porsche offered clients the opportunity to buy a 911 T outfitted with competition equipment directly from the factory, and the resulting cars have become known as the 911 T/R. They were built in low quantities to a range of specifications depending on their intended competition purposes.
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Porsche 911

Porsche 911 S/T (1970 – 1971)

Porsche developed the S/T, of which 33 were built in 1970 and 1971, taking full advantage of new FIA rules allowing a two-inch wider track. Accordingly, wheel arches were widened to accommodate seven-inch front and nine-inch rear wheels. Weight reduction was even more radical, including thinner-gauge steel for the roof and floorpans. Heating ducts, seat slide supports, the glove-box lid, ashtray, sun visors and rear torsion-bar covers were deleted.
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Porsche 911 Carrera RSR 2.8
911 Carrera RSR 2.8

Porsche 911 Carrera RSR 2.8 (1973)

Introduced in 1973, the RSR was a factory-built racing car based on the 911 chassis. The Porsche 911 Carrera RSR 2.8 was the first 911 to ever wear the RSR badge. Homologated for racing by the iconic 1973 Porsche 911 Carrera RS, the RSR’s racing career got off to the perfect start thanks to Brumos Racing’s overall triumph in the 1973 24 Hours of Daytona, while a factory car won the latest ever Targa Florio road race. For the privateer in the mid-1970s who wanted to go sports car racing this was the chosen weapon.
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