PORSCHE RACING HISTORYHarald Grohs (D)
1984 : Spa 1000 km - 3rd overall
23 April 1984 - Monza 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 956 | 956-101 | C1 | Hans-Joachim Stuck (D)/Harald Grohs (D)/Walter Brun (CH) | Brun Motorsport/Kremer | 4th | 4th | 6th | 167 laps |
15 July 1984 - Nürburgring 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 956 B | 956-116 | C1 | Hans-Joachim Stuck (D)/Harald Grohs (D) | Schiesser Porsche Brun | DNF | 79 laps - Accident |
29 July 1984 - Brands Hatch 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 956 | 956-116 | C1 | Stefan Bellof (D)/Harald Grohs (D) | Brun Motorsport | 5th | 5th | 2nd | 224 laps |
2 September 1984 - Spa 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 956 | 956-116 | C1 | Hans-Joachim Stuck (D)/Harald Grohs (D)/Walter Brun (CH) | Brun Motorsport | 3rd | 3rd | 5th | 142 laps |
16 September 1984 - Imola 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 18 | Porsche 956 | 956-109 | C1 | Harald Grohs (D)/Hervé Regout (B)/Jürgen Lässig (D) | Obermaier Racing (D) | 6th | 6th | 11th | 191 laps |