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1993 All Japan Grand Touring Car Championship

The 1993 All Japan Grand Touring Car Championship was the inaugural season of the Japan Automobile Federation All-Japan Grand Touring Car Championship and the successor series to the All Japan Sports Prototype Championship as international prototypes were in a state of flux in the early 1990s, and sportscar racing globally had switched from prototypes to grand tourers. It was marked as well as the eleventh season of a JAF-sanctioned sports car racing championship dating back to the All Japan Sports Prototype Championship.

Most events were staged as joint-races with the upstart Japan Super Sports Sedan Championship, and the IMSA GT Championship, with only a small handful of cars entered in the "GTS" category that would later evolve into the current GT500 class - and in fact, only one such car took part in that year's Suzuka 1000km against several Group C prototypes and sports cars from the N1 Endurance Series. Because the format and structure of the races were so different from what would come in future seasons, the 1993 season is not recognized by the GT Association (GTA), who were incorporated in 1994 to promote the All-Japan GT Championship (later to become Super GT).

The championship was contested over four rounds, and Masahiko Kageyama 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.	Tyre
NISMO	Nissan Skyline GT-R	Nissan RB26DETT 2.6 L Twin Turbo I6	2	JPN Masahiko Kageyama	1–2, 4
Joe Llauget	Oldsmobile Cutlass IMSA GTO	Oldsmobile 6.0 L V8	12	USA Joe Llauget	1
Lindley Racing	Ford Mustang IMSA GTO	Ford 6.0 L V8	48	USA Les Lindley	1
Tommy Riggins	Oldsmobile Cutlass IMSA GTO	Oldsmobile 6.0 L V8	53	USA Tommy Riggins	1

GT2

Team	Make	Car	Engine	No.	Tyre
NISMO	Nissan Silvia	Nissan FJ20DET 2.0 L Turbo I4	3	JPN Takayuki Kinoshita	1–2
JPN Hideo Fukuyama	4
Auberlen Racing Concepts	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	19	USA Bill Auberlen	1
Jack Lewis Enterprises	Porsche 964 RS	Porsche M64/03 3.8 L F6	73	USA Jack Lewis	1
Leitzinger Racing	Nissan Silvia	Nissan VQ30DE 3.0 L V6	95	USA Bob Leitzinger	1
97	USA Frank Honsowetz	1

JSS

Team	Make	Car	Engine	No.	Tyre
RS Nakaharu	Nissan Silvia	Nissan FJ20DET 2.0 L Turbo I6	5	JPN Hiroyasu Aoyagi	1–2, 4
24	JPN Seiichi Sodeyama	1–2, 4
25	JPN Minoru Saotome	2
RE Amemiya Racing	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	6	JPN Katsuo Kobayashi	1
10	JPN Tadashi Mizuno	1–2, 4
ERC	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	9	JPN Tetsuya Kawasaki	1
11	JPN Takemasa Okazaki	1–2
12	JPN Tetsuya Kawasaki	4
Hiromoto Ishimori	Nissan Skyline GTS-R	Nissan RB20DET 2.0 L Turbo I6	13	JPN Hiromoto Ishimori	1–2, 4
Katsumi Mochizuki	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	17	JPN Katsumi Mochizuki	1–2
Kenji Tohira	Nissan Skyline GTS-R	Nissan RB20DET 2.0 L Turbo I6	22	JPN Kenji Tohira	1–2
Atsushi Hayakawa	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	33	JPN Atsushi Hayakawa	1–2
Tetsuo Kozai	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	37	JPN Tetsuo Kozai	1–2, 4
Shunichi Mori	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	39	JPN Shunichi Mori	1–2, 4
Katsutoshi Ito	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	40	JPN Katsutoshi Ito	1, 4
Toshiro Fukazawa	Mazda RX-7	Mazda RE13B 1.3 L 2-rotor	55	JPN Toshiro Fukazawa	1–2, 4
Yoshimi Ishibashi	Nissan Skyline GTS-R	Nissan RB20DET 2.0 L Turbo I6	70	JPN Yoshimi Ishibashi	1–2, 4

C1

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

GT-N3

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

GTS

Team	Make	Car	Engine	No.	Tyre
Competition Motorsport South	Chevrolet Camaro	Chevrolet 6.0 L V8	11	USA Kenny Bupp Jr.	3
CAN Robert Peters	3
USA Luis Sereix	3
Lindley Racing	Ford Mustang IMSA GTO	Ford 6.0 L V8	48	USA Les Lindley	3
USA Bob Sobey	3

GTU

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

Lights

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

LM GT4

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

N1-1

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

N1-2

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

N1-3

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

RS

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

Schedule

Round	Race	Circuit
Japan IMSA GT Fuji	Fuji Speedway	March 28
Japan Fuji 100 km	Fuji Speedway	May 30
Japan Suzuka 1000 km	Suzuka Circuit	August 29
Japan Fuji F3000	Fuji Speedway	October 17

Race results

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

Notes

References

(19 October 2007). "History of JGTC and Super GT Racing". imca-slotracing.com.
(10 April 2003). "JGTC 1993". wspr-racing.com.
(10 April 2003). "JGTC – final positions and tables". classicscars.com.

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