Makes › Porsche › 911 › Original 911 › 911 Carrera RSR Turbo 2.1 · Prototype · 1974 Ultra Rare
Porsche
911 Carrera RSR Turbo 2.1
Works turbocharged 911 prototype racer, forerunner of the 934/935.
Photo: Morio · CC BY-SA 3.0
Contents
01Overview
At a glance
- Built
- 4 Built
- Years
- 1974
- Engine
- air-cooled flat-six · 2,142 cc / 2.1 LFactory: 2,142 cc
- Power
- 373 kW / 507 PSFactory: 500 hp · converted
- Top speed
- 299 km/hFactory: 186 mph · converted
- Body
- Not yet verified
- Designer
- Not yet verified
- In this archive
- Not yet verified
- Surviving
- Not yet verified
Sources and any conflicting figures are in the sections below.
Why it matters
The RSR 2.1 Turbo was the first turbocharged racing 911 and a works entry in the 1974 FIA World Championship for Makes. It finished second overall at the 1974 24 Hours of Le Mans, and the model is described as hugely influential.
How rare is it?
Six separate kinds of rarity – never combined into one number.
Each kind of rarity is rated separately and never combined.
Photos
Exterior, interior and detail photos with their licences.
Porsche 911 Carrera RSR Turbo 2.1 (Wikimedia Commons search)
Photo: Morio · CC BY-SA 3.0
Porsche 911 Carrera RSR Turbo 2.1 (Wikimedia Commons search)
Photo: Morio · CC BY-SA 3.0
Porsche 911 Carrera RSR Turbo 2.1 (Wikimedia Commons search)
Photo: Morio · CC BY-SA 3.0
02Production & history
Production
Every figure says what it counts.
| What is counted | Figure | Basis | Status |
|---|---|---|---|
| Total model productionCarrera RSR Turbo 2.14 cars purpose-built for the 1974 Group 5 championship | 41 | Factory production | Independently researched |
Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.
History
Only four RSR 2.1 Turbos were built. The cached Gooding lot describes the last of them, chassis 911 460 9102, as a works team entry in the 1974 World Championship for Makes. At Le Mans it was driven by Herbert Müller and Gijs van Lennep to second place overall.
Variants
How each version differs from the standard 911 Carrera RSR Turbo 2.1.
No variants documented yet. Have a source? Contribute it.
03Specifications
Technical specifications
Engine
| Engine family | Not yet verified |
|---|---|
| Engine code | Not yet verified |
| Layout | air-cooled flat-six2 Independently researched |
| Displacement | 2,142 cc / 2.1 LFactory: 2,142 cc2 Independently researched |
| Bore | 83 mmFactory: 83 mm3 Independently researched |
| Stroke | 66 mmFactory: 66 mm3 Independently researched |
| Compression ratio | Not yet verified |
| Valvetrain | SOHC2 Independently researched |
| Fuel system | Bosch mechanical injection3 Independently researched |
| Induction | turbocharged2 Independently researched |
| Power | 373 kW / 507 PSFactory: 500 hp · converted3 Independently researchedSource also gives 470-500 bhp at 8,000 rpm and 338-368 kW peak. |
| Power at | Not yet verified |
| Torque | Not yet verified |
| Redline | 8,000 rpm3 Independently researched |
Transmission & drivetrain
| Gearbox | RSR 3.0 gearbox3 Independently researched |
|---|---|
| Gears | Not yet verified |
| Driven wheels | Not yet verified |
Chassis, body & dimensions
| Chassis | Not yet verified |
|---|---|
| Front suspension | Independent, coil-over shock absorbers, anti-roll bar2 Independently researchedSource does not separate front and rear. |
| Rear suspension | Independent, coil-over shock absorbers, anti-roll bar2 Independently researchedSource does not separate front and rear. |
| Brakes | Not yet verified |
| Steering | Not yet verified |
| Body construction | Not yet verified |
| Wheelbase | Not yet verified |
| Length | Not yet verified |
| Width | Not yet verified |
| Height | Not yet verified |
| Front track | Not yet verified |
| Rear track | Not yet verified |
| Kerb weight | 825 kgFactory: 825 kg3 Independently researched |
| Dry weight | Not yet verified |
Performance
| Maximum speed | 299 km/hFactory: 186 mph · converted3 Independently researched |
|---|---|
| 0–100 km/h | Not yet verified |
| 0–60 mph | 3.2 s3 Independently researched |
| Fuel tank | Not yet verified |
“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.
04Colours & options
Factory colours & interiors
Original paint and trim, with the number of cars in each where a source gives it.
Not yet documented. Have a source? Contribute it.
Factory options & codes
Codes are shown exactly as written by the manufacturer.
Not yet documented. Have a source? Contribute it.
05Individual cars
Chassis register
Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.
Not yet documented. Have a source? Contribute it.
Competition history
Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
Auction & sale history
Documented public sales of the individual cars. Click a chassis number to open its full record in the register.
Not yet documented. Have a source? Contribute it.
See one in person
Museums where an example of this car can be seen.
No example is documented on public display yet. Have a source? Contribute it.
06Reference
Identification guide
How to tell an original from a replica or later conversion.
Being verified against factory or registry sources before it is published. Have a source? Contribute it.
Sources
Each number links to the exact facts it supports.
-
1
Sports Car Digest – Porsche RSR Carrera Turbo car profile Level C
- 4 Carrera RSR Turbo 2.14 cars purpose-built for the 1974 Group 5 championship
-
2
1974 Porsche 911 Carrera RSR 2.1 Turbo Level C Gooding Christie’s
- 2,142 CC SOHC Air-Cooled Flat 6-Cylinder Engine
- the First Turbocharged Racing 911
- 4-Wheel Independent Suspension with Coil-Over Shock Absorbers and Anti-Roll Bars
-
3
Porsche 911 Carrera RSR Turbo 2.1 Level B Stuttcars
- bore of 83 mm
- same 66 mm stroke
- Bosch mechanical injection
- 500 hp at 1.5 bars turbo pressure
- engine's redline of 8,000 rpm
- mated to an existing RSR 3.0 gearbox
- just 825 kg to the starting line
- top speed of 186 mph
- 0 - 60 mph in just 3.2 seconds (in 1974)
Keep exploring
More from Porsche
-
Porsche · 1948
356 "No. 1" Roadster (Sport 356/1)
1 Built
-
Porsche · 1986–1987
961
1 Built
-
Porsche · 1984
953 (911 4x4 Paris–Dakar)
3 Built
-
Porsche · 1939–1940
Type 64 (60K10) "Berlin–Rome"
3 Built
More from Germany
-
Rumpler · 1921–1925
Tropfenwagen
100 Built
-
Audi · 1989
90 quattro IMSA GTO
6 Built
-
Automobili Pininfarina
Battista (2020)
150 Built
-
Loremo · 2006
Loremo LS
Production not yet verified
73 other makes from GermanyAC SchnitzerAdlerAgria-WerkeAlbertAlpinaAMGAMOAmphicarApolloArtegaAudiAuto UnionAutomobili PininfarinaBayerische AutowerkeBenzBenz & Cie.BitterBMWBohseBoldmenBorgwardBovensiepenBrabusBrennaborBrütschCarlssonChampionDaimler-Motoren-GesellschaftDKWFMR (Messerschmitt)FuldamobilGepardGlasGoggomobilGoliathGumpertGutbrodHanomagHeinkelHorchAll makes →