Robert Kirby (USA)
1978
5 February 1978 - Daytona 24 Hours - World Championship for Makes
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
51 | Porsche 911 S | GTU | John Hotchkis (USA)/Robert Kirby (USA)/Dennis Aase (USA) | Wynn's International | 58th | 18th | 63rd | 85 laps - Engine |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
51 | Porsche 911 S | GTU | John Hotchkis (USA)/Robert Kirby (USA)/Dennis Aase (USA) | Wynn's International | 32nd | 16th | 33rd | 142 laps - Mechanical |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
51 | Porsche 911 S | GTU | Robert Kirby (USA)/John Hotchkis (USA) | 23rd | 6th | 28th | 89 laps |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
51 | Porsche 911 S | GTO | Robert Kirby (USA) | John Hotchkis | 16th | 9th | 23rd | 35 laps |