PORSCHE RACING HISTORYPorsche 935/77A - Chassis No. 930 890 0015
19 March 1978 - Mugello 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 12 | Porsche 935/77A | 930 890 0015 | Gr.5 | Toine Hezemans (NL)/Hans Heyer (D)/John Fitzpatrick (GB) | Gelo Racing Team (D) | 1st | 1st | 2nd | 176 laps |
22 April 1978 - Dijon 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0015 | Gr.5 | Klaus Ludwig (D)/Toine Hezemans (NL) | Gelo Racing Team (D) | DNF | 1st | 101 laps - Driveshaft |
14 May 1978 - Silverstone 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0015 | Gr.5 | John Fitzpatrick (GB)/Toine Hezemans (NL) | Gelo Racing Team (D) | DNF | 2nd | 95 laps - Accident |
28 May 1978 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935/77A | 930 890 0015 | Gr.5+2.0 | Klaus Ludwig (D)/Toine Hezemans (NL)/John Fitzpatrick (GB) | Weisberg-Gelo-Team (D) | DNF | 1st | 22 laps - Head Gasket |
17 September 1978 - Norisring Trophäe - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0015 | Gr.5 | Toine Hezemans (NL) | Weisberg-Gelo-Team (D) | 2nd | 2nd | 1st | 62 laps |
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935/77A | 930 890 0015 | GTX | Bob Wollek (F)/Jacky Ickx (B)/Peter Gregg (USA) | Gelo Racing Team (D) | 32nd | 6th | 3rd | 342 laps - Valves |
11 March 1979 - DRM Zolder Bergischer Löwe - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear International (D) | 6th | 6th | 5th | 24 laps |
8 April 1979 - DRM Hockenheim Jim Clark - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 3rd | 3rd | 3rd | 20 laps |
22 April 1979 - Dijon 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 935/77A | 930 890 0015 | Gr.5 | Jacky Ickx (B)/Bob Wollek (F)/Manfred Schurti (FL) | Gelo Racing (D) | 2nd | 1st | 4th | 251 laps |
29 April 1979 - DRM Nürburgring Eifelrennen - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 6th | 6th | 5th | 7 laps |
6 May 1979 - Silverstone 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 2 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL)/Bob Wollek (F)/John Fitzpatrick (GB) | Gelo Sportswear Team (D) | 5th | 3rd | 5th | 210 laps |
20 May 1979 - DRM Salzburgring - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 3rd | 3rd | 5th | 24 laps |
3 June 1979 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL)/John Fitzpatrick (GB)/Bob Wollek (F) | Gelo Racing Team (D) | 1st | 1st | 5th | 44 laps |
10 June 1979 - Le Mans 24 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 36 | Porsche 935/77A | 930 890 0015 | Gr.5+2.0 | Manfred Schurti (FL)/Hans Heyer (D) | Gelo Sportswear International (D) | DNF | 4th | 201 laps - Engine |
17 June 1979 - DRM Mainz-Finthen - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 5th | 5th | 5th | 50 laps |
24 June 1979 - DRM Norisring - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 3rd | 3rd | 3rd | 44 laps |
1 July 1979 - DRM Zandvoort - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 4th | 4th | 5th | 25 laps |
22 July 1979 - DRM Diepholz - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 4th | 4th | 1st | 40 laps |
19 August 1979 - DRM Zolder Westfalen-Pokal - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | DNF | 6th | 9 laps |
2 September 1979 - DRM Hockenheim Hessen Cup - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | 4th | 4th | 6th | 40 laps |
23 September 1979 - DRM Nürburgring Supersprint - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 935/77A | 930 890 0015 | Gr.5 | Manfred Schurti (FL) | GELO Sportswear Team (D) | DNF | 3rd | 11 laps |
25 May 1980 - Nürburgring 1000 km - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 935/77A | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Derek Bell (GB)/Bernard Béguin (F) | Meccarillos Racing Team (CH) | DNF | 14th | 10 laps - DNF |
15 June 1980 - Le Mans 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 46 | Porsche 935/77A | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Bernard Béguin (F)/Volkert Merl (D) | Meccarillos Racing (CH) | DNF | 18th | 37 laps - Crankshaft |
24 August 1980 - DRM Zolder Westfalen-Pokal - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 935/77A | 930 890 0015 | Gr.5 | Claude Haldi (CH) | Meccarillos Racing-Team (CH) | 6th | 6th | 10th | 23 laps |
28 September 1980 - Dijon 1000 Kilometres - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 935/77A | 930 890 0015 | Gr.5+2.0 | Claude Haldi (CH)/Bernard Béguin (F) | Haldi/Meccarillos (CH) | 2nd | 2nd | 8th | 178 laps |
24 May 1981 - Nürburgring 1000 Km - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 22 | Porsche 935/77A | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Charles Mendez (USA) | Claude Haldi (CH) | 12th | 8th | 17th | 16 laps |
14 June 1981 - Le Mans 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 935/77A | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Hervé Poulain (F)/Mark Thatcher (GB) | Claude Haldi (CH) | DNF | 32nd | 260 laps - Accident |
27 September 1981 - Brands Hatch 1000 km - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 28 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Rodrigo Téran (PA) | Claude Haldi (CH) | DNF | 21st | 103 laps |
25 April 1982 - DRM Nürburgring Eifelrennen - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH) | Claude Haldi (CH) | 13th | 9th | 7 laps |
9 May 1982 - DRM Mainz-Finthen - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH) | Claude Haldi Racing (CH) | 4th | 9th | 69 laps |
30 May 1982 - Nürburgring 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 36 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Bernard Béguin (F)/Harald Grohs (D) | Claude Haldi | DNF | 13th | 12 laps - Engine |
20 June 1982 - Le Mans 24 Hours - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 75 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Rodrigo Téran (PA)/François Hesnault (F) | Claude Haldi | DNF | 28th | 141 laps - Gearbox |
27 June 1982 - DRM Norisring - DRM - Deutsche Rennsport Meisterschaft
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 28 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH) | Claude Haldi Racing (CH) | 14th |