1979 Porsche 911RSR 'IROC Tribute'

For sale by auction on Saturday 29 August 2015 with Historics at Brooklands. Brooklands Motor Racing Circuit. Weybridge. Surrey. Call 01753 639170
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. br/>bonnet. front spoiler. engine deck-lid and rear valance taking the
weight down to just over 2. 00lbs 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.



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