Sebring 12 Hours 1991 - Racing Sports Cars

Event: Nissan Presents the 39th Annual 12 Hours of Sebring International Grand Prix of Endurance		Date: 16.3.1991
Track: Sebring International Raceway (United States), 5.955 kms	Organiser: unknown
Sebring 12 Hours
International Motor Sport Association (round 3) IMSA GTO (round 3) IMSA GTU (round 3) International Motor Sport Association (round 3)

Weather:	cool, cloudy-to-rain
Start time:	10:15
Grid:	unknown
Distance:	12 hours
Attendance:	80000

Entered:	54
Practiced:	51
Qualified:	46
Started:	46
Finished:	25

Classes:	Pract	Start
IMSA GTP	15	14
IMSA GTP Lights	9	9
IMSA GTO	15	13
IMSA GTU	10	10

Photo Gallery Entered Cars Technical Data Appearance Race Results Grid Qualifying Lap Times

Race notes:
7 full-course cautions for 54 laps (3 hours, 14 minutes)

Pre-race sessions:
2 qualifying sessions held for a total of 50 minutes on 14-15/3
5 non-qualifying practice sessions held for a total of 285 minutes on 13-15/3
20 minute pre-race warm-up held

Winners:
Overall:	83	Nissan NPT-90	Brabham / Daly / Brabham
IMSA GTP Lights:	8	Kudzu DG-1 Buick	Morgan / Pace
IMSA GTO:	15	Ford Mustang	Jones / Gordon
IMSA GTU:	95	Nissan 240SX	Leitzinger / Loring
Leaders:
laps 142-145:	84	Nissan NPT-90
laps 146-163:	83	Nissan NPT-90
laps 1-5:	6	Porsche 962C
laps 164-190:	84	Nissan NPT-90
laps 191-201:	83	Nissan NPT-90
laps 202-203:	84	Nissan NPT-90
laps 204-243:	83	Nissan NPT-90
lap 244:	84	Nissan NPT-90
laps 245-281:	83	Nissan NPT-90
laps 282-291:	84	Nissan NPT-90
laps 292-298:	83	Nissan NPT-90
laps 41-43:	84	Nissan NPT-90
laps 44-64:	6	Porsche 962C
laps 65-72:	83	Nissan NPT-90
laps 6-8:	7	Porsche 962C
laps 73-80:	6	Porsche 962C
laps 81-141:	83	Nissan NPT-90
laps 9-40:	6	Porsche 962C
Fastest Laps:
Overall:	6	Porsche 962 C	Bob Wollek (F)	1:51.1200	192.9121 km/h	lap 97
IMSA GTP Lights:	80	Spice SE89P Ferrari	Ruggero Melgrati (I)	2:01.2710	176.7639 km/h	lap 24
IMSA GTO:	63	Mazda RX-7	Price Cobb (USA)	2:04.2300	172.5539 km/h	lap 77
IMSA GTU:	95	Nissan 240SX	David Loring (USA)	2:17.1310	156.3204 km/h	lap 94
Pole Positions:
Overall:	83	Nissan NPT-90	Geoff Brabham (AUS)	1:49.7610	195.3003 km/h
IMSA GTP Lights:	80	Spice SE89P Ferrari	Fermin Velez (E)	1:59.7690	178.9816 km/h
IMSA GTO:	75	Nissan 300ZX	Steve Millen (NZ)	2:03.5250	173.5388 km/h
IMSA GTU:	95	Nissan 240SX	Bob Leitzinger (USA)	2:15.0610	158.7167 km/h
Notes of interest:
Top makes by numbers:	Spice (8), Nissan (7), Porsche (7), Mazda (6), Chevrolet (6)
Top engines by numbers:	Chevrolet (9), Nissan (7), Porsche (7), Buick (6), Mazda (6)
Top car types by numbers:	Porsche 962 (5), Mazda RX-7 (5), Spice SE89P (4), Spice SE90P (4), Chevrolet Camaro (4)
Driver nationalities:	USA (86), CDN (7), GB (5), I (5), D (4), CO (3), NZ (3), RA (2), F (2), CH (2), AUS (2)
Engine positions:	mid-engined (51%), front-engined (44%), rear-engined (5%)
Average engine size:	3860 cc (with regard to 23% turbocharged cars and 13% cars with rotary engine an applicable size is 4762 cc)
Oldest known drivers:	Dick Greer (59), Martino Finotto (58), Brian Redman (54)
Youngest known drivers:	Butch Leitzinger (22), Scott Sharp (23), Dave Russell (26)

Official Race Programme:

Cover	Entry List	Schedule	Track Map