MODEL HISTORY

The Carrera RSR 3.0 is one of the most successful Group 4 racing cars ever. Today the Carrera RSR models rank among the most sought after of all Porsche 911 variants.

The Carrera RSR 3.0 was made in small numbers for racing. For the privateer in the mid-1970s who wanted to go sports car racing, and in particular compete successfully at the famed 24 Hours of Le Mans, there was really only one viable option, the Porsche RSR. Introduced in 1973, the 2.8 RSR was a factory-built racing car based on the 911 chassis. These were not converted street cars, but rather purpose built competition models designed and built from the ground up for serious racing use.

In 1974 the factory made significant changes to the car including a new 3.0 liter engine, wider wheels with center lock hubs and improved aerodynamics. The result was a car that would dominate the GT category and challenge for overall wins around the world, and the 3.0 RSR would go on to become the most successful Group 4 racing car of its time. Its combination of low weight, immense Porsche 917 brakes, impeccable handling, and a 330+hp naturally aspirated flat-6 that gave the model a power-to-weight ratio that would humble even the most mighty offerings from Italy, England or America.

Compared to the 2.8 litre version used in 1973, the bigger engine featured a larger bore and a sturdier aluminium instead of a magnesium crankcase to cope with the additional forces. The Type 911/75 flat-6 engine had twin-plug ignition, high-lift camshafts, Bosch twin-spark fuel injection, a compression ratio of 10:3.1, dual megaphone exhausts, a dry sump oil tank, and the same 5-speed transmission from the RS. Power was 330 bhp @ 8000 rpm and torque was 232 ft lbs @ 6,500 rpm. The increase in power was great, but for racing the bigger benefit was that these changes substantially improved the reliability. Completing the drivetrain was a reinforced clutch and a five-speed gearbox.

Since nobody was using the 917 parts bin, Porsche went to down and took the 917s 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. As a result the RSR appears notably different to the RS thanks to these wide fiberglass wheel arches covering 10.5 inch wheels at the front and 14 inch wheels at the back. The rear arches include air intakes to help cool those 917 sourced brakes.

Fiberglass was also used in the bumpers, the engine cover, the front trunk lid, and the rear “Tea Tray” spoiler. Lightweight Perspex windows replaced the glass in the side windows for further weight savings, and the interior was stripped of all but the bare essentials – a single seat, pedals, a steering wheel, a shifter, and some gauges. By further reduce the weight from the already lightweight Carrera RS 2.7, while simultaneously increasing power without compromising reliability, the team was able to tip the scales at around 900 kg dry. With 330hp on tap, this lightweight Porsche 911 Carrera RSR 3.0 was capable of a top speed of 179 mph and awesome acceleration.

Equipment

LHD, C00, 2.7 MFi Body, 915 5 Speed Gearbox, Period Correct Mexico Blue, Custom Livery, Black Interior, Nut and Bolt Restoration, Genuine RSR Parts, RSR 3.0 Engine, RSR front bumper, RSR Rear Bumper, RSR Arches, RSR Oil Filter, RSR Fuel Injection Pump, RSR Exhaust, RSR Fuel Pumps, RSR Lightweight Rear Lights, RSR lightweight Door Cards, Twin Plug Ignition, 15 Inch BBS Wheels, 917 Brakes and Discs, Original 2.7 Clocks, Twin Master Cylinder Pedal Box, 100L Plastic Fuel Tank, Recaro Fixed Racing Bucket Seat, 5 Point Harness, Perspex Windows, Heated Front Windscreen

EXTERIOR

Refinished in a period correct coat of Mexico Blue this RSR looks absolutely sensational, with the vivid blue and custom white livery it amplifies the wide hips and squat stance that make up that renowned athletic form. With no visible stone chips or scuff marks to note the car looks factory fresh with genuine RSR front and rear bumpers, rear arches and ‘tea tray’ spoiler the car looks like it’s ready to be revealed as a new entrant at Le Mans in-period.

Being FIA compliant, this extreme track toy is ready to dominate any race in its class as an Appendix K build.

INTERIOR

Focused is the word to describe upon climbing aboard this track special, nestling down into a low slung Recaro bucket seat with the familiar 5 dial arrangement in front. In line with FIA regulations a Sabelt 5 point harness and a fire extinguisher are equipped to ensure everything is appropriate for scrutineering. Overall the cabin presents in excellent condition with the seat showing no wear or fraying and dash top free from cracks or distortion.

During the restoration process the bare bone interior was giving a new lick of paint and protection from rust and corrosion, built to the same specification as the 70’s race car.

ENGINE & TRANSMISSION

This mighty RSR engine develops 350bhp at the rear wheels alongside a kerb weight of 940kg; an impressive power to weight ratio that ensured the car would dominate the race calendar during the 70’s. Drivetrain is provided by a 915 5 speed gearbox, an internally mounted oil pump for better lubrication and a limited slip differential with shorter ramp ratios. Further genuine parts were used to finish the engine build including Genuine RSR oil tank, RSR Fuel injection pump, Oil filter and Fuel pumps.

Built on the base of an original 1974 2.7 MFI, significantly this example has the correct Torsion tube reinforcements as per the original 3.0 RSR builds.

Turning the key reveals the sum of the vast mechanical upgrades, with the noise from the Genuine RSR exhaust system roaring through the cabin as the revs build to create a raucous and riveting driving machine.

WHEELS, TYRES & BRAKES

Finished in gold and chrome the Centre Lock 9 & 11 inch deep dish wheels present in excellent order and are a perfect period compliment to the alluring bodywork. The staggered wheels are wrapped in Goodyear Eagle slick tyres; ideal for track work.

Supplied with finned 4 pot brake calipers and discs found on the iconic 917, the braking system also features dual master cylinders to ensure fantastic stopping power.

HISTORY FILE

Beginning life as a German supplied ’73 Carrera 2.7 MFI, this spectacular RSR was used on the road before finding its way into the UK in 1982. There is extensive history spread over 2 large files after arrival into the UK with visits to Neil Bainbridge and Autofarm amongst myriad works and servicing carried out with other specialists including Charles Ivey. The first UK owner would hold on to the car for an incredible 17 years before sale to Nick Moss in the early millennium; a passionate Porsche enthusiast who embarked a project he didn’t think he would start; “What started in June 2001 as a gearbox change due to a weak syncro on 2nd gear led to a complete engine strip when I found a broken barrel stud. One thing led to another as the end of summer approached and I decided to carry out a complete restoration”

Upon completion Nick had successfully built a 3.0 RS with uprated power and styling – ready for the british roads. The full restoration process is all documented in the history file.

Having enjoyed the car for 5 years, the current owner purchased in 2005 and wanted to do something very special; a full FIA regulation approved 3.0 RSR using Genuine parts that would suit both road and track. The results are just fantastic!

Present with the car is an incredible selection of invoices spanning over 2 decades, FIA papers and V5 documentation.