PORSCHE RACING HISTORYJack Rynerson (USA)
1983
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 T | 1290486 | GTU | Jack Rynerson (USA)/Ron Case (USA) | Case Racing | 68th | 18th | 74th | 67 laps - Engine |
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 | GTU | Jack Rynerson (USA)/Van McDonald (USA)/Chris Wilder (USA) | Jack Rynerson | 27th | 10th | 49th | 183 laps |
10 April 1983 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 8 | Porsche 911 | GTU | Jack Rynerson (USA)/Chris Wilder (USA) | John Rynerson | 26th | 7th | 36th | 103 laps |
21 August 1983 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 T | 1290486 | GTU | Ron Case (USA)/Jack Rynerson (USA) | Dr. Ronald Case | 29th | 13th | 48th | 77 laps |
27 November 1983 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 | GTU | Jack Rynerson (USA)/Chris Wilder (USA) | Jack Rynerson | 40th | 14th | 53rd | 70 laps |