PORSCHE RACING HISTORYChassis No. 917-014
1 February 1970 - Daytona 24 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917 K | 917-014 | S | Jo Siffert (CH)/Brian Redman (GB) | J. W. Engineering (GB) | 2nd | 2nd | 2nd | 679 laps |
17 May 1970 - Spa 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 24 | Porsche 917 K | 917-014 | S5.0 | Jo Siffert (CH)/Brian Redman (GB) | J. W. Automotive Engineering (GB) | 1st | 1st | 2nd | 71 laps |
11 July 1970 - Watkins Glen 6 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917 K | 917-014 | S5.0 | Jo Siffert (CH)/Brian Redman (GB) | J. W. Automotive Engineering Ltd. (GB) | 2nd | 2nd | 1st | 308 laps |
12 July 1970 - Can-Am Watkins Glen - Can-Am - Canadian-American Challenge Cup
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917 K | 917-014 | Jo Siffert (CH) | John Wyer Automotive (GB) | 2nd | 12th | 87 laps |
10 January 1971 - Buenos Aires 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 917 K | 917-014 | S | Jo Siffert (CH)/Derek Bell (GB) | J. W. Automotive (GB) | 1st | 1st | 3rd | 165 laps |
4 April 1971 - Brands Hatch 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 917 K | 917-014 | S5.0 | Jo Siffert (CH)/Derek Bell (GB) | John Wyer Automotive (GB) | 3rd | 1st | 3rd | 235 laps |
9 May 1971 - Spa 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 20 | Porsche 917 K | 917-014 | S5.0 | Jo Siffert (CH)/Derek Bell (GB) | J. Wyer (GB) | 2nd | 2nd | 1st | 71 laps |
24 July 1971 - Watkins Glen 6 Hours - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 917 K | 917-014 | S | Jo Siffert (CH)/Gijs van Lennep (NL) | J. W. Automotive Engineering (GB) | 2nd | 1st | 2nd | 277 laps |
25 July 1971 - Can-Am Watkins Glen - Can-Am - Canadian-American Challenge Cup
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 917 K | 917-014 | Richard Attwood (GB) | John Wyer Automotive (GB) | 13th | 11th | 77 laps |