Lot 275 - 1979 Porsche 911RSR 'IROC Tribute'
|Odometer reading||106,080 miles|
|Estimate||£35,000 - £42,000|
International Race of Champions (IROC) was a US racing series competition, promoted as an equivalent of an American All-Star Baseball Game or The Masters in Golf. Drivers raced identically-prepared cars set up by a single team of mechanics in an effort to make the race purely a test of driver ability. The first race used a set of 15 brightly coloured Porsche Carrera RSRs in which Mark Donohue won the first IROC race in 1974. The original RSRs had very aggressive body work compared with the regular 911s with flared rear fenders as well as a duck tail deck lid and a characteristic front spoiler incorporating oil cooler and brake ducts. The engines in these cars were 2.9 litres and generated 355bhp which made them very quick with a total weight of just over 2000lbs.
The car presented here is an evocation of the RSR "IROC "cars. It is based on a 1979 rust free 911SC and has not only the look but also the go associated with these legendary versions of the Porsche 911. The car has a better power to weight ratio than the current 2016 911 GT3 RS and combined with a much lower weight, it makes it much more nimble on both road and track. It has no driving aids making it a much more involving and intuitive drive than the current crop of computer laden, driver aid assisted 911s. It was built as a Sports Car Club of America (SCCA) endurance racer and therefore is very close to current FIA HTP specifications before being converted for UK road use. The engine is an RSR spec engine based on a 964 twin plug engine with a very strong bottom-end together with a state of the art fuel injection and ignition system. The engine, at the red line of 7200rpm, generates 380bhp which is sufficient to make this a very fast car indeed. In order to get the power down to the road, a modified G50 gearbox is used with a custom gearset from Guard Transmissions in the US and a set of forged Fiske FM5 wheels wrapped in Toyo R888 sticky tyres. The chassis is also uprated and is now coil over based with monoball and ball bearing joints throughout. The chassis was recently set up by PARR Porsche in Crawley as a Fast Road car. Retardation is supplied by a set of Big Red callipers using a Tilton dual master-cylinder with cockpit bias adjustment. The body is clothed in light weight composite panels including doors, front wings, bonnet, front spoiler, engine deck-lid and rear valance taking the weight down to just over 2,000lbs and very close to the weight of the original RSRs. The interior sports a Porsche 935 Lollipop style driver's seat with a Teamtech five-point harness and an RS style passenger seat. Other interior parts include a custom leather-clad Mota-Lita steering wheel together with an intelligent Autometer tachometer with shift light. In order to keep everybody safe a multi-point Cr-Mo cage is included and padded where necessary. A full list of modifications and technical specification can be found in the history file alongside an MoT test certificate valid until June 2016. This is an extremely well specified example and one that does justice to the great Porsche 911RSR that was used at racetracks around the world, beating all comers.
Previous lotLot 274 - 1981 Aston Martin Lagonda Series II
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