The 1993 All Japan Grand Touring Car Championship was the inaugural season of the Japan Automobile Federation All Japan Grand Touring Car Championship. It was also the eleventh season of a JAF-sanctioned sports car racing championship dating back to the All Japan Sports Prototype Championship (JSPC), which had folded after the 1992 season.

Originally, the series was part of a nine-round championship called the Inter-Circuit League (ICL), which was formed as a last-ditch effort to save the JSPC. Five of the proposed ICL rounds were cancelled due to a lack of entries, and only one race, the Suzuka 1000km, would feature both Group C prototypes and GT cars (as well as cars from the N1 Endurance Series).

The remaining JGTC rounds were staged as joint events with the IMSA GT Championship or the Japan Super Sports Sedan Championship (JSS). Nismo was the only team that built and entered any cars to the new JAF N-GT regulations. Because the format and structure of the races were so different from what would come in future seasons, the 1993 season is not officially recognized by the GT Association (GTA), which was incorporated in October 1993 to manage the All Japan GT Championship (later to become Super GT).

Masahiko Kageyama, the only full-time driver in the GT1 category, was declared the champion, driving a Nissan Skyline GT-R. He would also win the final All-Japan Touring Car Championship to be run to Group A regulations in the same year.

Drivers and teams GT1 Team Make Car Engine No. Drivers Tyre Rounds NISMO Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 2 Masahiko Kageyama 1–2, 4 Joe Llauget Oldsmobile Oldsmobile Cutlass IMSA GTO Oldsmobile LT1 6.0 L V8 12 Joe Llauget1 Lindley Racing Ford Ford Mustang IMSA GTO Ford Cleveland 6.0 L V8 48 Les Lindley 1 Tommy Riggins Oldsmobile Oldsmobile Cutlass IMSA GTO Oldsmobile LT1 6.0 L V8 53 Tommy Riggins1

GT2 Team Make Car Engine No. Drivers Tyre Rounds NISMO Nissan Nissan Silvia Nissan FJ20DET 2.0 L Turbo I4 3 Takayuki Kinoshita 1–2 Hideo Fukuyama4 Auberlen Racing Concepts Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 19 Bill Auberlen1 Jack Lewis Enterprises Porsche Porsche 964 RS Porsche M64/03 3.8 L F6 73 Jack Lewis1 Leitzinger Racing Nissan Nissan Silvia Nissan VQ30DE 3.0 L V6 95 Bob Leitzinger 1 97 Frank Honsowetz1

JSS Team Make Car Engine No. Drivers Tyre Rounds RS Nakaharu Nissan Nissan Silvia Nissan FJ20DET 2.0 L Turbo I6 5 Hiroyasu Aoyagi 1–2, 4 24 Seiichi Sodeyama1–2, 4 25 Minoru Saotome2 RE Amemiya Racing Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 6 Katsuo Kobayashi 1 10 Tadashi Mizuno1–2, 4 ERC Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 9 Tetsuya Kawasaki 1 11 Takemasa Okazaki1–2 12 Tetsuya Kawasaki4 Hiromoto Ishimori Nissan Nissan Skyline GTS-R Nissan RB20DET 2.0 L Turbo I6 13 Hiromoto Ishimori1–2, 4 Katsumi Mochizuki Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 17 Katsumi Mochizuki1–2 Kenji Tohira Nissan Nissan Skyline GTS-R Nissan RB20DET 2.0 L Turbo I6 22 Kenji Tohira1–2 Atsushi Hayakawa Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 33 Atsushi Hayakawa1–2 Tetsuo Kozai Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 37 Tetsuo Kozai1–2, 4 Shunichi Mori Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 39 Shunichi Mori1–2, 4 Katsutoshi Ito Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 40 Katsutoshi Ito1, 4 Toshiro Fukazawa Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 55 Toshiro Fukazawa1–2, 4 Yoshimi Ishibashi Nissan Nissan Skyline GTS-R Nissan RB20DET 2.0 L Turbo I6 70 Yoshimi Ishibashi1–2, 4

C1 Team Make Car Engine No. Drivers Tyre Rounds Le Mans Company Nissan Nissan R92CP Nissan VRH35Z 3.5 L Twin Turbo V8 25 Takao Wada 3 Toshio Suzuki 3 Nova Engineering Nissan Nissan R90CK Nissan VRH35Z 3.5 L Twin Turbo V8 27 Mauro Martini 3 Heinz-Harald Frentzen 3

GT-N3 Team Make Car Engine No. Drivers Tyre Rounds NISMO Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 2 Masahiko Kageyama 3 Jeff Krosnoff3

GTS Team Make Car Engine No. Drivers Tyre Rounds Competition Motorsport South Chevrolet Chevrolet Camaro Chevrolet LT1 6.0 L V8 11 Kenny Bupp Jr. 3 Robert Peters3 Luis Sereix3 Lindley Racing Ford Ford Mustang IMSA GTO Ford Cleveland 6.0 L V8 48 Les Lindley 3 Bob Sobey3

GTU Team Make Car Engine No. Drivers Tyre Rounds Dibós Racing Team Peru Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 84 Eduardo Dibós II 3 Juan Dibós 3

Lights Team Make Car Engine No. Drivers Tyre Rounds Comptech Acura Spice Racing Spice Spice SE91P Acura C30A 3.0 L V6 49 Parker Johnstone 3 Dan Marvin 3

LM GT4 Team Make Car Engine No. Drivers Tyre Rounds Roock Racing Porsche Porsche 964 RSR Porsche M64/03 3.8 L F6 37 Dieter Köll 3 Philippe Albera 3 Akihiko Nakaya 3 Chamberlain Engineering Lotus Lotus Esprit Sport 200 Lotus 912 2.2 L I4 44 Gordon Kellett 3 Hideshi Matsuda 3 Tomiko Yoshikawa 3 45 Yojiro Terada 3 Tetsuya Ota 3 Tom Langeberg 3 Larbre Compétition Porsche Porsche 964 RSR Porsche M64/03 3.8 L F6 47 Dominique Dupuy 3 Jesús Pareja 3 Jack Laconte 3 HEICO Motorsport Porsche Porsche 964 RSR Porsche M64/03 3.8 L F6 65 Jürgen Barth 3 Dirk Ebeling 3 Karl-Heinz Wlazik 3

N1-1 Team Make Car Engine No. Drivers Tyre Rounds Motor Sport Division Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 1 Masami Miyoshi 3 Motoji Sekine 3 Beldear Corporation Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 7 Hideo Fukuyama 3 Kumi Sato 3 Revolver Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 8 Yoshinori Hasegawa 3 Motonobu Sakamoto 3 Knight Sport Mazda Mazda RX-7 Mazda RE13B 1.3 L 2-rotor 9 Fuminori Mizuno 3 Yasuo Kusakabe 3 Yasufumi Yamazaki 3 Susuki Racing Mechanics Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 15 Katsuhiko Okamoto 3 Shinya Motoyoshi 3 Team Actor Nissan Nissan Skyline GT-R Nissan RB26DETT 2.6 L Twin Turbo I6 16 Junya Oshima 3 Akihiko Koto 3 Yoichi Fukudome 3

N1-2 Team Make Car Engine No. Drivers Tyre Rounds Nakajima Planning Honda Honda Prelude Honda H22A 2.2 L I4 6 Koji Sato 3 Hidetoshi Mitsusada 3 Gazas Honda Honda Prelude Honda H22A 2.2 L I4 21 Kazuo Shimizu 3 Masami Kageyama 3 Takahiko Hara 3 Formula Spirit Honda Honda Prelude Honda H22A 2.2 L I4 26 Daniel Latour 3 Takeshi Tsuchiya 3 Tatsuya Tanigawa 3

N1-3 Team Make Car Engine No. Drivers Tyre Rounds Team A-One Honda Honda Civic SiR Honda B16A2 1.6 L I4 6 Ryo Michigami 3 Atsushi Okuda 3 Yoshihisa Fujita 3

RS Team Make Car Engine No. Drivers Tyre Rounds Cosmos Racing Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 5 Masaki Ohashi 3 Katsunori Yamamoto 3 Yoshifumi Yamazaki 3 73 Yoichiro Suzuki 3 Akio Tomita 3 Naoto Chikada 3 Trident Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 10 Koichi Hamada 3 Minetaka Mizuno 3 Tadayuki Sato 3 Car Graphic Racing Team Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 17 Masayoshi Furuya 3 Masahiro Tejima 3 Hisashi Tukahara 3 Mascrat Racing Team Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 23 Tsuguo Yagyu 3 Mari Nagata 3 Katsuto Kinugasa 3 Mitsuo Yamamoto Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 51 Mitsuo Yamamoto 3 Genji Hashimoto 3 Jikanwari West West 89S Mazda RE13B 1.3 L 2-rotor 52 Tomohiro Tomasu 3 Michiko Hashimoto 3 IZUMODEN Oscar Oscar SK90 Mazda RE13B 1.3 L 2-rotor 55 Yoshiyuki Ogura 3 Keiichi Mizutani 3 Hajime Oshiro 3

Schedule Round Race Circuit Date 1 IMSA GT Fuji Fuji Speedway March 28 2 Fuji 100 km Fuji Speedway May 30 3 Suzuka 1000 km Suzuka Circuit August 29 4 Fuji F3000 Fuji Speedway October 17

Race results

Round Circuit Date Pole position Winner 1 Fuji Speedway March 28#2 NISMO#2 NISMO Masahiko Kageyama Masahiko Kageyama 2 Fuji Speedway May 30#2 NISMO#2 NISMO Masahiko Kageyama Masahiko Kageyama 3 Suzuka Circuit August 29#27 Nova Engineering#25 Le Mans Company Mauro Martini Heinz-Harald Frentzen Takao Wada Toshio Suzuki 4 Fuji Speedway October 17#2 NISMO#2 NISMO Masahiko Kageyama Masahiko Kageyama

Notes

References