1994 / PorscheRef Nº 139
964 Carrera RSR 3.8

- Year
- 1994
- Transmission
- Manual
- Mileage
- 9,150 km indicated
- Exterior
- Black; period Aggreko / MaxCom / Castrol livery
The story
One of 51 factory-built RSR 3.8 competition cars, raced by Harald Grohs with Wehmeier & Castrup in the 1994 ADAC GT Cup. ONS records, period photographs and a documented engine overhaul.
This factory-built 1994 Porsche 964 Carrera RSR 3.8 is one of 51 competition examples. Chassis WP0ZZZ96ZPS496087 was campaigned by Harald Grohs with Wehmeier & Castrup during the 1994 ADAC GT Cup season, and retains its recognizable Aggreko, MaxCom and Castrol racing presentation.
The 3.8-litre air-cooled twin-ignition Type M64/04 engine produced up to approximately 350 horsepower depending on the applicable competition regulations. A five-speed competition manual gearbox and purpose-built chassis equipment reflect the car's endurance and GT racing role. A full engine overhaul has been completed, with no competition use reported since.
Documented 1994 competition history
The original ONS Wagenpass and period evidence record eight starts at AVUS, Wunstorf, Zolder, Zandvoort, Zeltweg, Salzburgring, Spa-Francorchamps and the Nürburgring. Results include second-place finishes at AVUS, Zolder and Zeltweg, fourth places at Zandvoort and Salzburgring, and an overall pole position at Zolder.
Contemporary photographs and Ulrich Upietz's Porsche Sport ’94 document the livery, race number, driver, entrant and competition appearances. These records give the car's identity and racing configuration a traceable period foundation.
The odometer indicates 9,150 kilometers (approximately 5,686 miles). The factory competition interior includes a racing seat, six-point harness and fire-suppression system. Offered from a private collection in Germany with competition records and supporting documentation. Future event participation is subject to inspection, preparation and eligibility requirements.
What sets it apart
Factory-built 964 Carrera RSR 3.8
Harald Grohs / Wehmeier & Castrup 1994 ADAC GT Cup campaign
Eight documented 1994 starts
Three second-place finishes and Zolder pole position
Period livery documented in Porsche Sport ’94
Full engine overhaul; no competition use since
The specifications
In the
details.
The numbers, the configuration, and the particulars of this automobile.
- Engine
- Type M64/04 3.8-litre air-cooled twin-ignition flat-six
- Output
- Up to approximately 350 hp, depending on competition regulations
- Transmission
- Five-speed competition manual
- Chassis
- WP0ZZZ96ZPS496087
- Production
- One of 51 factory-built competition RSR 3.8s
- Odometer
- 9,150 km (5,686 miles) indicated
- Condition
- Engine overhauled; no competition use since overhaul
- Documentation
- ONS Wagenpass, period records, photographs and published race history
The photography
A closer look.
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Provenance
The paper
trail.
A history told through the available records.
1994
Harald Grohs raced chassis WP0ZZZ96ZPS496087 for Wehmeier & Castrup in eight ADAC GT Cup events
1994 results
Second at AVUS, Zolder and Zeltweg; fourth at Zandvoort and Salzburgring; pole at Zolder
Period evidence
ONS Wagenpass, contemporary photographs and Porsche Sport ’94 publication
Mechanical preparation
Full engine overhaul; no subsequent competition use reported
Today
Preserved in period racing configuration within a private German collection
A direct conversation
Let’s talk
about this car.
With Ralf G. BahrFounder, RGB Motors
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Historical factory and period reference material is used for informational purposes. Some images have been digitally enhanced or reimagined using AI and may not represent the actual vehicle. All information is subject to verification. All vehicles are subject to prior sale. Prices, specifications, and availability are subject to change without notice. All vehicles are sold AS IS, WHERE IS, with no warranty, express or implied.


