| Date | Place |
Division |
Start |
Finish | Owner |
# |
Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 2 1965 | Riverside International Raceway | SCCA US Road Racing Championship | 24 | Porsche 718 RS61 | 19 | did not finish | |||||
| Jul 28 1968 | Road America | SCCA US Road Racing Championship | 4 | Heimrath Racing | 39 | McLaren M1C Chevrolet | 116 | 1,700 | running | ||
| Feb 1 1970 | Daytona International Speedway | FIA World Sports Car Championship | 60 | 54 | Rainer Brezinka | 39 | Porsche 906 132 | 96 | engine | ||
| Jul 11 1970 | Watkins Glen International | FIA World Sports Car Championship | 20 | 15 | Rainer Brezinka | 39 | Porsche 906 132 | 231 | running | ||
| Jan 31 1971 | Daytona International Speedway | FIA World Sports Car Championship | 42 | 44 | Fritz Hochreuter | 40 | Porsche 911 | 58 | did not finish | ||
| Jun 13 1971 | Mosport International Raceway | SCCA Can-Am | 19 | 26 | Rudi Bartling | 168 | McLaren M1B Chevrolet | 9 | pinion | ||
| Jul 24 1971 | Watkins Glen International | FIA World Sports Car Championship | 25 | 29 | Fritz Hochreuter | 80 | Porsche 911 | 0 | did not start | 0 | |
| Mar 25 1972 | Sebring International Raceway | FIA World Sports Car Championship | 11 | 7 | R. Brezinka | 39 | Porsche 910 | 213 | running | ||
| Jul 9 1972 | Mid-Ohio Sports Car Course | IMSA GT | 32 | 39 | 49 | Porsche 911S | 104 | did not finish | |||
| Jul 22 1972 | Watkins Glen International | FIA World Sports Car Championship | 36 | 36 | Ray Brezinka | 39 | Porsche 910 | 0 | did not start | 0 | |
| Feb 4 1973 | Daytona International Speedway | FIA World Sports Car Championship | 5 | 12 | Harry Bytzek | 19 | Porsche 908/02 017 | 532 | running | ||
| Mar 24 1973 | Sebring International Raceway | IMSA GT | 33 | 55 | Bytzek Automotive | 46 | Porsche 911S | 80 | did not finish | ||
| Oct 20 1974 | Autódromo Hermanos Rodríguez | IMSA GT | 17 | 25 | Norm Ridgely | 75 | Porsche 911S | 112 | did not finish | ||
| Jul 12 1975 | Watkins Glen International | WSCC/SCCA Trans Am | 12 | 8 | Heimrath Racing | 74 | Porsche Carrera RSR 911 560 9123 | 138 | 1,900 | running | |
| Aug 24 1975 | Mid-Ohio Sports Car Course | IMSA GT | 14 | 6 | Porsche Carrera | 206 | running | ||||
| Sep 19 1976 | Road Atlanta | IMSA GT | 20 | 12 | Bytzek Automotive Design | 19 | Porsche Carrera | 113 | 600 | running | |
| Nov 28 1976 | Daytona International Speedway | IMSA GT | 28 | 13 | Bytzek Automotive Design | Porsche Carrera | 59 | running | |||
| Feb 6 1977 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 26 | 28 | Bytzek Brothers | 9 | Porsche Carrera RSR | 343 | did not finish | ||
| Mar 19 1977 | Sebring International Raceway | IMSA GT | 19 | 6 | Bytzek Automotive | 9 | Porsche Carrera RSR | 217 | 1,150 | running | |
| May 30 1977 | Lime Rock Park | IMSA GT | 18 | 14 | Bytzek Automotive | 9 | Porsche Carrera | 62 | running | ||
| Aug 20 1977 | Mosport International Raceway | WSCC/SCCA Trans Am | 13 | 5 | Bytzek Automotive Design | 9 | Porsche Carrera RSR | 224 | 1,000 | running | |
| Nov 26 1977 | Daytona International Speedway | IMSA GT | 22 | 6 | Bytzek Automotive | 9 | Porsche Carrera | 61 | running | ||
| Mar 18 1978 | Sebring International Raceway | IMSA GT | 43 | 16 | Fritz Hochreuter | 50 | Porsche 911 | 189 | running | ||
| Aug 27 1978 | Mid-Ohio Sports Car Course | IMSA GT | 20 | 44 | 4 | Porsche Carrera | 10 | did not finish | |||
| Sep 4 1978 | Road America | SCCA Trans Am | 19 | 29 | Bytzek Automotive | 94 | Porsche Carrera RSR | 32 | 250 | running | 0 |
| Feb 4 1979 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 28 | 33 | Bytzek Automotive | 69 | Porsche Carrera RSR | 335 | oil system | ||
| Mar 17 1979 | Sebring International Raceway | IMSA GT | 29 | 7 | Bytzek Automotive | 69 | Porsche Carrera RSR | 230 | running | ||
| Jul 15 1979 | Mid-Ohio Sports Car Course | IMSA GT | 19 | 12 | Bytzek Automotive | 69 | Porsche Carrera RSR | 94 | running | ||
| Sep 2 1979 | Road America | IMSA GT | 18 | 16 | Werner Frank | 03 | Porsche 934 930 670 0162 | 109 | running | ||
| Nov 25 1979 | Daytona International Speedway | IMSA GT | 27 | 11 | Bytzek Automotive | 69 | Porsche Carrera RSR | 44 | running | ||
| Feb 3 1980 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 31 | 63 | Werner Frank | 03 | Porsche 934 930 670 0162 | 51 | did not finish | ||
| Mar 22 1980 | Sebring International Raceway | IMSA GT | 35 | 13 | Framm Promotions | 92 | Porsche Carrera RSR | 213 | running | ||
| Jul 5 1980 | Watkins Glen International | WSCC/SCCA Trans Am | 41 | 41 | Framm Promotions | 91 | Porsche Carrera RSR | 0 | did not start | 0 | |
| Aug 17 1980 | Mosport International Raceway | IMSA GT | 19 | 24 | Bytzek/Litens Automotive | 69 | Porsche Carrera RSR | 103 | accident | ||
| Feb 1 1981 | Daytona International Speedway | IMSA GT/World Sports Car Championship | 27 | 53 | David Deacon Racing | 40 | BMW M1 WBS59910004301225 | 118 | did not finish | ||
| Mar 21 1981 | Sebring International Raceway | IMSA GT/World Sports Car Championship | 17 | 64 | David Deacon Racing | 40 | BMW M1 WBS59910004301225 | 47 | did not finish | ||
| Apr 26 1981 | Riverside International Raceway | IMSA GT/World Sports Car Championship | 17 | 53 | David Deacon Racing | 40 | BMW M1 WBS59910004301225 | 21 | did not finish | ||
| Jul 12 1981 | Watkins Glen International | FIA World Sports Car Championship | 23 | 25 | Toyota Village | 33 | Porsche 934 930 670 0162 | 9 | oil line | ||
| Aug 16 1981 | Mosport International Raceway | IMSA GT/World Sports Car Championship | 25 | 19 | Fritz Hochreuter | 53 | Porsche Carrera 006 00024 | 170 | did not finish | ||
| Aug 23 1981 | Road America | IMSA GT/World Sports Car Championship | 22 | 38 | Werner Frank | 03 | Porsche 934 930 670 0162 | 45 | did not finish | ||
| Sep 12 1981 | Mosport International Raceway | SCCA Trans Am | 29 | 15 | 53 | Porsche 911SC | 38 | 325 | running | 0 | |
| Mar 20 1982 | Sebring International Raceway | IMSA GT | 27 | 8 | R & H Racing | 39 | Porsche Carrera RSR 006 00024 | 221 | running | ||
| May 16 1982 | Charlotte Motor Speedway | IMSA GT | 31 | 18 | 40 | BMW M1 WBS59910004301225 | 107 | did not finish | |||
| Aug 22 1982 | Road America | IMSA GT | 20 | 24 | Toyota Village | 22 | Porsche 934 930 670 0162 | 98 | running | ||
| Sep 5 1982 | Mid-Ohio Sports Car Course | IMSA GT | 24 | 30 | Toyota Village | 22 | Porsche 934 930 670 0162 | 74 | did not finish | ||
| Sep 26 1982 | Pocono International Raceway | IMSA GT | 39 | 6 | Toyota Village | 22 | Porsche 934 930 670 0162 | 163 | running | ||
| Mar 19 1983 | Sebring International Raceway | IMSA GT | 62 | 16 | R & H Racing | 83 | Porsche Carrera RSR | 204 | running | ||
| May 15 1983 | Charlotte Motor Speedway | IMSA GT | 29 | 18 | Bieri Racing | 40 | BMW M1 WBS59910004301225 | 118 | running | ||
| Aug 11 1985 | Mosport International Raceway | FIA World Sports Car Championship | 16 | 15 | 153 | Porsche Carrera RSR | 125 | engine | |||
| Mar 22 1986 | Sebring International Raceway | IMSA GT | 60 | 21 | R & H Racing | 39 | Porsche 911 | 197 | running | ||
| Mar 21 1987 | Sebring International Raceway | IMSA GT | 70 | 33 | S Squared Engineering | 00 | Porsche 911 Carrera RSR | 209 | 500 | running | |
| Mar 19 1988 | Sebring International Raceway | IMSA GT | 61 | 33 | Rudy Bartling | 90 | Porsche 911 | 217 | running | ||
| Mar 18 1989 | Sebring International Raceway | IMSA GT | 45 | 44 | Fritz Hochreuter | 50 | Porsche 911 | 115 | electrical | ||
| Mar 17 1990 | Sebring International Raceway | IMSA GT | 43 | 44 | Rudy Bartling | 50 | Porsche 911 | 45 | engine | ||
| May 20 1991 | Mosport International Raceway | IMSA GTO/GTU/AAC | 15 | 7 | 50 | Porsche 911 | 66 | 5,500 | running | ||
| Sep 22 1991 | Watkins Glen International | IMSA GTO/GTU/AAC | 30 | 28 | 50 | Porsche 911 | 19 | 750 | mechanical | ||
| Mar 21 1992 | Sebring International Raceway | IMSA GT | 47 | 30 | Fiorano Motorsports | 39 | Porsche 911 | 183 | engine | ||
| May 18 1992 | Mosport International Raceway | IMSA GTS/GTO/GTU | 20 | 22 | Fiorano Motorsports | 39 | Porsche 911 | 58 | running | ||
| Mar 18 1995 | Sebring International Raceway | IMSA GT | 48 | 62 | Rudi Bartling | 39 | Porsche 911 | 70 | did not finish | ||
| May 21 1995 | Halifax Street Circuit | IMSA GT | 16 | 18 | Rudi Bartling | 39 | Porsche 911 | 2 | mechanical | ||
| Aug 13 1995 | Mosport International Raceway | IMSA GT | 29 | 19 | Vito Scavone | 84 | Porsche 944 Turbo | 88 | running | ||
| Aug 13 1995 | Mosport International Raceway | IMSA GT | 21 | 18 | Rudi Bartling | 39 | Porsche 911 | 88 | running | ||
| Mar 16 1996 | Sebring International Raceway | IMSA GT | 53 | 55 | Rudi Bartling | 81 | Porsche 968 | 50 | suspension | ||
| Aug 25 1996 | Mosport International Raceway | IMSA GT | 27 | 27 | Rudi Bartling | 81 | Porsche 968 | 0 | 0 | did not start | 0 |
| Aug 6 2000 | Mosport International Raceway | IMSA American LeMans Series | 25 | 21 | Kyser Racing | 69 | Porsche 996 WP0ZZZ99ZYS692095 | 67 | 10,230 | running | 0 |