PORSCHE RACING HISTORYHans Heyer (D)
1984 : Sebring 12 Hours - 1st overall : Imola 1000 km - 3rd overall
26 February 1984 - Miami 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 46 | Porsche 935 J | 930 890 0012 | GTP | Mauricio DeNarváez (COL)/Hans Heyer (D) | De Narvaez/Joest (CO) | 21st | 21st | 24th | 54 laps - Rear Suspension |
24 March 1984 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 48 | Porsche 935 J | 930 890 0012 | GTP | Mauricio DeNarváez (COL)/Hans Heyer (D)/Stefan Johansson (S) | De Narvaez Enterprises (CO) | 1st | 1st | 16th | 263 laps |
2 September 1984 - Spa 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 956 | 956-105 | C1 | Hans Heyer (D)/Dieter Schornstein (D)/"John Winter" Louis Krages (D) | Joest Racing | 8th | 8th | 10th | 137 laps |
2 September 1984 - Spa 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 956 | 956-104 | C1 | Stefan Johansson (S)/Henri Pescarolo (F)/Hans Heyer (D) | Joest Racing | DNF | 7th | 39 laps - Ignition |
16 September 1984 - Imola 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 956 B | 956-117 | C1 | Jochen Mass (B)/Henri Pescarolo (F)/Hans Heyer (D) | Joest Racing | 3rd | 3rd | 7th | 197 laps |
16 September 1984 - Imola 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 956 | 956-105 | C1 | Hans Heyer (D)/"John Winter" Louis Krages (D)/Dieter Schornstein (D) | Joest Racing | 7th | 7th | 12th | 190 laps |