The 1986 All Japan Endurance Championship was the fourth season of the All Japan Sports Prototype Championship. The 1986 champion was the #1 Advan Alpha Nova Porsche 962C driven by Kunimitsu Takahashi.
| Team | Make | Car | Engine | No. | Drivers | Tyre | Rounds |
|---|---|---|---|---|---|---|---|
| OZ Racing | MCS | MCS Guppy | Mazda RE13B 1.3 L 2-rotor | 21 | | D | 2–6 |
| | 2–6 | ||||||
| | 5 | ||||||
| Mr S Racing Product | MCS | MCS Guppy | BMW M12/7 2.0 L I4 | 96 | | D | 3, 5 |
| | 3, 5 | ||||||
| | 3 | ||||||
All races were held in Japan.
| Round | Race | Circuit | Date |
|---|---|---|---|
| 1 | International Suzuka 500 km | Suzuka Circuit | 6 April |
| 2 | All Japan Fuji 1000 km | Fuji Speedway | 4 May |
| 3 | All Japan Fuji 500 Miles | Fuji Speedway | 20 July |
| 4 | International Suzuka 1000 km | Suzuka Circuit | 24 August |
| 5 | WEC-Japan | Fuji Speedway | 5 October |
| 6 | All Japan Fuji 500 km | Fuji Speedway | 23 November |
Season results are as follows: [1]
| Round | Circuit | Winning team |
|---|---|---|
| Winning drivers | ||
| 1 | Suzuka Circuit | #1 Advan Sports Nova Porsche 962C |
| | ||
| 2 | Mt. Fuji Report | #1 Advan Sports Nova Porsche 962C |
| | ||
| 3 | Mt. Fuji | #7 Trust Racing Team Porsche 956 |
| | ||
| 4 | Suzuka Circuit Report | #27 FromA Racing Porsche 956 |
| | ||
| 5 | Mt. Fuji Report | #7 Joest Racing Porsche 956 |
| | ||
| 6 | Mt. Fuji | #7 Trust Racing Team Porsche 956 |
| | ||
| Rank | Drivers | Number/Team | Points | Wins |
|---|---|---|---|---|
| 1 | | #1 Advan Sports Nova Porsche 962C #25 Advan Sports Nova Porsche 962C | 70 | 2 |
| 2 | | 70 | 2 | |
| 3 | | #7 Trust Racing Team Porsche 956 #60 Trust Racing Team Porsche 956 | 54 | 2 |
| 4 | | #27 FromA Racing Porsche 956 | 53 | 1 |
| 5 | | 53 | 1 | |