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The 1991 All Japan Sports Prototype Car Endurance Championship was the ninth season of the All Japan Sports Prototype Championship. The 1991 champion was the #23 Nissan Motorsports Nissan R91CP driven by Kazuyoshi Hoshino and Toshio Suzuki.

Schedule

All races were held in Japan.

Entry list

Team	Make	Car	Engine	No.	Drivers	Tyre	Rounds
Nissan Motorsports	Nissan	Nissan R90CP Nissan R91CP	Nissan VRH35Z 3.5 L Twin Turbo V8	1	Masahiro Hasemi	B	All
					Anders Olofsson		All
				23	Kazuyoshi Hoshino		All
					Toshio Suzuki		All
Team Taisan	Porsche	Porsche 962C	Porsche 935/82 3.0 L Twin Turbo F6	2	Kunimitsu Takahashi	Y	1–2
					Stanley Dickens		1–2
					Will Hoy		2
			Porsche 962/83 3.2 L Twin Turbo F6	3	Will Hoy		1
					Harald Huysman		1
Navi Connection Racing	Alexel	Alexel Autorama C91	Ford DFR 3.5 L V8	3	Kaoru Iida	D	5–7
					Taku Akaike		5–7
The Alpha Racing	Porsche	Porsche 962C	Porsche 962/83 3.2 L Twin Turbo F6	7	Tiff Needell	Y	1–3
					Anthony Reid		1–3
					Raul Boesel		6
					Bob Wollek		6
					Jonathan Palmer		7
					Oscar Larrauri		7
TWR Suntec Jaguar	Jaguar	Jaguar XJR-11	Rover V64V 3.5 L Twin Turbo V6	18	Mauro Martini	G	2–6
					Jeff Krosnoff		2–6
					John Nielsen		3–4
		Jaguar XJR-14	Cosworth HB 3.5 L V8		Mauro Martini		7
					Jeff Krosnoff		7
				17	David Brabham		7
					Teo Fabi		7
Ao Racing	Spice	Spice SE90C	Ford DFZ 3.5 L V8	21	Hideshi Matsuda	D	5–6
					Hideo Fukuyama		5–6
					Tomiko Yoshikawa		6
Team LeMans	Nissan	Nissan R90C Nissan R91CP	Nissan VRH35Z 3.5 L Twin Turbo V8	25	Hideki Okada	Y	All
					Takao Wada		1–4
					Masahiko Kageyama		3–7
					Maurizio Sandro Sala		4
From A Racing	Nissan	Nissan R90CK	Nissan VRH35Z 3.5 L Twin Turbo V8	27	Akihiko Nakaya	B	All
					Volker Weidler		All
					Thomas Danielsson		2
Toyota Team TOM'S	Toyota	Toyota 90C-V Toyota 91C-V	Toyota R36V 3.6 L Turbo V8	36	Masanori Sekiya	B	All
					Hitoshi Ogawa		All
					Andy Wallace		2, 4
				37	Geoff Lees		All
					Eje Elgh		2–7
					Pierre-Henri Raphanel		1
					Andy Wallace		4, 6
Toyota Team SARD	Toyota	Toyota 90C-V Toyota 91C-V	Toyota R36V 3.6 L Turbo V8	38	Roland Ratzenberger	D	All
					Naoki Nagasaka		1–4
					Pierre-Henri Raphanel		3–7
Team Fedco	Spice	Spice SE91C	Ford DFZ 3.5 L V8	77	Hisashi Yokoshima	G	2–3
					Kiyoshi Misaki		2–3
Team Schuppan	Porsche	Porsche 962C	Porsche 962/83 3.0 L Twin Turbo F6	91	Hurley Haywood	D	1
					James Weaver		1
Team 0123	Porsche	Porsche 962C	Porsche 935/83 3.0 L Twin Turbo F6	91	Julian Bailey	D	4
					Kenny Acheson		4, 6
					James Weaver		6
Trust Racing	Porsche	Porsche 962C	Porsche 935/83 3.0 L Twin Turbo F6	100	George Fouché	D	All
					Steven Andskär		All
Mazdaspeed	Mazda	Mazda 787 Mazda 787B	Mazda R26B 2.6 L 4-rotor	201	Tetsuya Ota	D	1
					Pierre Dieudonné		1, 7
					David Kennedy		1–2, 4–5
					Johnny Herbert		3, 6
					Bertrand Gachot		3
					Yojiro Terada		4–5, 7
					Takashi Yorino		4
					Maurizio Sandro Sala		6
				202	Takashi Yorino		1–3, 5–7
					Yojiro Terada		1–3
					Tetsuya Ota		2, 5
					David Kennedy		6–7
Pleasure Racing	Mazda	Mazda 767B	Mazda RE13J 2.6 L 4-rotor	230	Tetsuji Shiratori	D	All
					Shuji Fujii		All
					Masatomo Shimizu		1–6

Season results

Season results as follows:

Round	Circuit	Winning Team
		Winning Drivers
1	Mt. Fuji	#23 Nissan Motorsports Nissan R91CP
		Kazuyoshi Hoshino Toshio Suzuki
2	Mt. Fuji Report	#23 Nissan Motorsports Nissan R91CP
		Kazuyoshi Hoshino Toshio Suzuki
3	Mt. Fuji	#36 Toyota Team TOM'S Toyota 91C-V
		Hitoshi Ogawa Masanori Sekiya
4	Suzuka Circuit Report	#38 Toyota Team SARD Toyota 91C-V
		Roland Ratzenberger Pierre-Henri Raphanel Naoki Nagasaka
5	Sportsland SUGO Report	#37 Toyota Team TOM'S Toyota 91C-V
		Geoff Lees Eje Elgh
6	Mt. Fuji	#23 Nissan Motorsports Nissan R91CP
		Kazuyoshi Hoshino Toshio Suzuki
7	Sportsland SUGO	#17 TWR Suntech Jaguar XJR-14
		David Brabham Teo Fabi

Point Ranking

Drivers

Rank	Drivers	Number/Team	Points	Wins
1	Kazuyoshi Hoshino Toshio Suzuki	#23 Nissan Motorsports Nissan R91CP	87	3
2	Hitoshi Ogawa Masanori Sekiya	#36 Toyota Team TOM'S Toyota 91C-V	85	1
3	Geoff Lees	#37 Toyota Team TOM'S Toyota 91C-V	54	1
4	Volker Weidler Akihiko Nakaya	#27 From A Racing Nissan R90CK	52	0
5	George Fouché Steven Andskär	#100 Trust Racing Porsche 962C	52	0

References

1. "JSPC 1991". Archived from the original on 15 November 2009.

External links

• 1991 全日本スポーツプロトタイプカー耐久選手権 (in Japanese)

• JSPC seasons
• 1991 in Japanese motorsport