# 1992 All Japan Sports Prototype Car Endurance Championship

The 1992 All Japan Sports Prototype Car Endurance Championship was the tenth and final season of the All Japan Sports Prototype Championship, which would be replaced by the All Japan Grand Touring Car Championship, as sportscar racing in the early 1990s changed drastically with the decline of prototypes. The C1 class champion was the #1 Nissan Motorsports Nissan R92CP driven by Kazuyoshi Hoshino and the C class champion was the #7 and #36 TOM'S Toyota TS010 driven by Geoff Lees.

## Schedule

All races were held in Japan.
| Round | Race | Circuit | Date |
| 1 | International Suzuka 500 km | Suzuka Circuit | 19 April |
| 2 | Fuji 1000 km | Fuji Speedway | 4 May |
| 3 | Fuji 500 Miles | Fuji Speedway | 26 July |
| 4 | SUGO International 500 km | Sportsland SUGO | 13 September |
| 5 | Fuji 1000 km | Fuji Speedway | 4 October |
| 6 | Inter-Challenge Cup Mine 500 km | Mine Circuit | 1 November |

## Entry list

| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
| C1/LD2 ||||||||
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 1 | Kazuyoshi Hoshino | B | All |
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 1 | Toshio Suzuki | B | 1–5 |
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 1 | Takao Wada | B | 6 |
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 24 | Masahiro Hasemi | B | All |
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 24 | Masahiko Kageyama | B | All |
| Nissan Motorsports | Nissan | Nissan R92CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 24 | Jeff Krosnoff | B | 1–3 |
| Mazdaspeed | Mazda | Mazda MXR-01 | Mazda MV10 3.5 L V10 | 5 | Yojiro Terada | D | 1 |
| Mazdaspeed | Mazda | Mazda MXR-01 | Mazda MV10 3.5 L V10 | 5 | Takashi Yorino | D | 1 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 8 | Masanori Sekiya | B | 6 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 8 | Pierre-Henri Raphanel | B | 6 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 36 | Masanori Sekiya | B | 1–2, 4–5 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 36 | Pierre-Henri Raphanel | B | 1–2, 4–5 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 99 | Steven Andskär | B | All |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 99 | George Fouché | B | 1–5 |
| TOM'S | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 99 | Maurizio Sandro Sala | B | 6 |
| From A Racing | Nissan | Nissan R91CK | Nissan VRH35Z 3.5 L Twin Turbo V8 | 27 | Mauro Martini | B | All |
| From A Racing | Nissan | Nissan R91CK | Nissan VRH35Z 3.5 L Twin Turbo V8 | 27 | Volker Weidler | B | 1–3 |
| From A Racing | Nissan | Nissan R91CK | Nissan VRH35Z 3.5 L Twin Turbo V8 | 27 | Katsutomo Kaneishi | B | 1–5 |
| From A Racing | Nissan | Nissan R91CK | Nissan VRH35Z 3.5 L Twin Turbo V8 | 27 | Heinz-Harald Frentzen | B | 5–6 |
| Kitz Racing Team with SARD | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 39 | Roland Ratzenberger | B | All |
| Kitz Racing Team with SARD | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 39 | Eje Elgh | B | All |
| Kitz Racing Team with SARD | Toyota | Toyota 92C-V | Toyota R36V 3.6 L Turbo V8 | 39 | Eddie Irvine | B | 2–3, 5–6 |
| Team Take One | Nissan | Nissan R91CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 61 | Hideki Okada | D | All |
| Team Take One | Nissan | Nissan R91CP | Nissan VRH35Z 3.5 L Twin Turbo V8 | 61 | Thomas Danielsson | D | All |
| Pleasure Racing | Mazda | Mazda 767B | Mazda RE13J 2.6 L 4-rotor | 230 | Tetsuji Shiratori | D | 1–5 |
| Pleasure Racing | Mazda | Mazda 767B | Mazda RE13J 2.6 L 4-rotor | 230 | Masatomo Shimizu | D | 1–5 |
| Pleasure Racing | Mazda | Mazda 767B | Mazda RE13J 2.6 L 4-rotor | 230 | Seisaku Suzuki | D | 2–3, 5 |
| C/LD1 ||||||||
| Navi Connection Racing | Alexel | Alexel Autorama C91 | Ford DFR 3.5 L V8 | 3 | Kaoru Iida | D | 2 |
| Navi Connection Racing | Alexel | Alexel Autorama C91 | Ford DFR 3.5 L V8 | 3 | Yoshiyasu Tachi | D | 2 |
| Mazdaspeed | Mazda | Mazda MXR-01 | Mazda MV10 3.5 L V10 | 5 | Yojiro Terada | D | 2–6 |
| Mazdaspeed | Mazda | Mazda MXR-01 | Mazda MV10 3.5 L V10 | 5 | Takashi Yorino | D | 2–6 |
| Mazdaspeed | Mazda | Mazda MXR-01 | Mazda MV10 3.5 L V10 | 5 | Maurizio Sandro Sala | D | 2–3 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 7 | Geoff Lees | G | 5 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 7 | Jan Lammers | G | 5 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 7 | Eddie Irvine | G | 6 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 7 | Jacques Villeneuve | G | 6 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 7 | Tom Kristensen | G | 6 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 36 | Geoff Lees | G | 6 |
| Toyota Team TOM'S | Toyota | Toyota TS010 | Toyota RV10 3.5 L V10 | 36 | Jan Lammers | G | 6 |
| Nissan Motorsports | Nissan | Nissan NP35 | Nissan VRT35 3.5 L V12 | 23 | Toshio Suzuki | G | 6 |
| Nissan Motorsports | Nissan | Nissan NP35 | Nissan VRT35 3.5 L V12 | 23 | Jeff Krosnoff | G | 6 |
* ^1 – At Round 5 at Fuji Speedway, the C1 and C classes were renamed LD2 and LD1 respectively as the race was part of the Fuji Long Distance Series.

## Season results

Overall winner in bold. Season results as follows:
| Round | Circuit | C1 Winning Team | C Winning Team |
| Round | Circuit | C1 Winning Drivers | C Winning Drivers |
| 1 | Suzuka Circuit | #24 Nissan Motorsports Nissan R92CP | Did Not Participate |
| 1 | Suzuka Circuit | Masahiro Hasemi Jeff Krosnoff Masahiko Kageyama | Did Not Participate |
| 2 | Mt. Fuji | #1 Nissan Motorsports Nissan R92CP | None |
| 2 | Mt. Fuji | Kazuyoshi Hoshino Toshio Suzuki | None |
| 3 | Mt. Fuji | #1 Nissan Motorsports Nissan R92CP | #5 Mazdaspeed Mazda MXR-01 |
| 3 | Mt. Fuji | Kazuyoshi Hoshino Toshio Suzuki | Yojiro Terada Maurizio Sandro Sala |
| 4 | Sportsland SUGO | #1 Nissan Motorsports Nissan R92CP | None |
| 4 | Sportsland SUGO | Kazuyoshi Hoshino Toshio Suzuki | None |
| 5 | Mt. Fuji Report | #1 Nissan Motorsports Nissan R92CP | #7 TOM'S Toyota TS010 |
| 5 | Mt. Fuji Report | Kazuyoshi Hoshino Toshio Suzuki | Geoff Lees Jan Lammers |
| 6 | Mine Circuit | #1 Nissan Motorsports Nissan R92CP | #36 TOM'S Toyota TS010 |
| 6 | Mine Circuit | Kazuyoshi Hoshino Takao Wada | Geoff Lees Jan Lammers |

## Point Ranking
### C1 Class (Top 5)
#### Drivers

| Rank | Drivers | Number/Team | Points | Wins | Distance |
| 1 | Kazuyoshi Hoshino | #1 Nissan Motorsports Nissan R92CP | 103 | 5 | 2640.506 km |
| 2 | Toshio Suzuki | #1 Nissan Motorsports Nissan R92CP | 83 | 4 | 1696.02 km |
| 3 | Pierre-Henri Raphanel | #8 TOM'S Toyota 92C-V #36 TOM'S Toyota 92C-V | 73 | 0 | 2159.371 km |
| 4 | Masanori Sekiya | #8 TOM'S Toyota 92C-V #36 TOM'S Toyota 92C-V | 73 | 0 | 2033.509 km |
| 5 | Masahiro Hasemi | #24 Nissan Motorsports Nissan R92CP | 68 | 1 | 2054.971 km |

### C Class (Top 5)
#### Drivers

| Rank | Drivers | Number/Team | Points | Wins | Distance |
| 1 | Geoff Lees | #7 TOM'S Toyota TS010 #36 TOM'S Toyota TS010 | 40 | 2 | 879.409 km |
| 2 | Jan Lammers | #7 TOM'S Toyota TS010 #36 TOM'S Toyota TS010 | 40 | 2 | 623.913 km |
| 3 | Takashi Yorino | #5 Mazdaspeed Mazda MXR-01 | 27 | 0 | 826.324 km |
| 4 | Yojiro Terada | #5 Mazdaspeed Mazda MXR-01 | 27 | 1 | 613.288 km |
| 5 | Eddie Irvine | #7 TOM'S Toyota TS010 | 15 | 0 | 291.508 km |