PORSCHE RACING HISTORY934
1985
3 February 1985 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 89 | Porsche 934 | GTO | " Jamsal" (ES)/Eduardo Galdamez (ES)/" Anbagua" (GUA) | Scorpio Racing (ES) | 43rd | 18th | 32nd | 217 laps - Electrics | |
| 58 | Porsche 934 | 930 670 0162 | GTO | Michael Hammond (USA)/Don Kravig (USA)/Jim Torres (USA) | Coin Operated Racing (USA) | 64th | 24th | 39th | 86 laps - DNF |
24 February 1985 - Miami IMSA GTO - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 33 | Porsche 934 | 930 670 0161 | GTO | Kikos Fonseca (CR) | Latino Racing (DR) | 4th | 4th | 5th | 29 laps |
| 89 | Porsche 934 | 930 670 0171 | GTO | " Jamsal" (ES) | Scorpio Racing (ES) | 9th | 9th | 12th | 29 laps |
| 91 | Porsche 934 | 930 890 0014 | GTO | Chester Vincentz (USA) | Electrodyne (USA) | 18th | 18th | 6th | 27 laps |
23 March 1985 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 89 | Porsche 934 | 930 670 0171 | GTO | " Jamsal" (ES)/Kikos Fonseca (CR)/Alfredo Mena (USA) | Latino Racing (ES) | 12th | 5th | 31st | 219 laps |
| 58 | Porsche 934 | 930 670 0162 | GTO | Rick Borlase (USA)/Michael Hammond (USA)/Jim Torres (USA) | Coin Operated Racing (USA) | 20th | 8th | 28th | 198 laps - Suspension |
| 48 | Porsche 934 | 119 220 830 | GTO | Tom Cripe (USA) | Gary Wonzer | 73rd | 28th | 71st | 9 laps - DNF |
14 April 1985 - Road Atlanta 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 930 890 0014 | GTO | Chester Vincentz (USA)/Kees Nierop (CDN) | Electrodyne Performance (USA) | 12th | 2nd | 23rd | 111 laps |
28 April 1985 - Riverside 600 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 39 | Porsche 934 | 930 770 0911 | GTO | Jim Torres (USA)/Monte Shelton (USA) | 14th | 4th | 24th | 102 laps | |
| 58 | Porsche 934 | 930 670 0162 | GTO | Rick Borlase (USA) | Coin Operated Racing (USA) | 53rd | 15th | 30th | 20 laps - DNF |
25 August 1985 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 009 00030 | GTO | Chester Vincentz (USA)/Kees Nierop (CDN) | Electrodyne Performance | 12th | 2nd | 23rd | 110 laps |
| 39 | Porsche 934 | 930 770 0911 | GTO | Jim Torres (USA)/Monte Shelton (USA)/Rick Borlase (USA) | BCW Racing (USA) | 40th | 12th | 51st | 44 laps - DNF |
8 September 1985 - Pocono 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 009 00030 | GTO | Chester Vincentz (USA)/Kees Nierop (CDN) | Electrodyne Performance | 26th | 9th | 15th | 92 laps |
29 September 1985 - Watkins Glen 500 km - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 009 00030 | GTO | Chester Vincentz (USA)/Kees Nierop (CDN) | Electrodyne Performance | 14th | 4th | 27th | 81 laps |
5 October 1985 - Columbus IMSA GT - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 009 00030 | GTO | Chester Vincentz (USA) | Electrodyne Performance | 4th | 4th | 8th | 36 laps |
1 December 1985 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 91 | Porsche 934 | 009 00030 | GTO | Chester Vincentz (USA) | Electrodyne Performance | 66th | 22nd | 33rd | 19 laps - DNF |