Daytona 24 Hours 1991 - Racing Sports Cars

Event: SunBank 24 at Daytona		Date: 3.2.1991
Track: Daytona International Speedway (United States), 5.729 kms	Organiser: unknown
Daytona 24 Hours
International Motor Sport Association (round 1) IMSA GTO (round 1) IMSA GTU (round 1) International Motor Sport Association (round 1)

Weather:	intermittent rain
Start time:	2/2 15:30
Grid:	2-2-2, PP left
Distance:	24 hours
Attendance:	55000

Entered:	68
Practiced:	47
Qualified:	46
Started:	46
Finished:	24

Classes:	Pract	Start
IMSA GTP	13	12
IMSA GTP Lights	7	7
IMSA GTO	15	15
IMSA GTU	9	9
Le Mans Cars	3	3

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

Race notes:
3 full-course cautions for 18 laps (69 minutes)

Pre-race sessions:
5 non-qualifying practice sessions held for a total of 375 minutes on 31/1-1/2
2 qualifying sessions held for a total of 60 minutes on 31/1-1/2
30 minute pre-race warm-up held

Winners:
Overall:	7	Porsche 962 C	Jelinski / Pescarolo / Haywood / Wollek / "Winter"
IMSA GTP Lights:	48	Spice SE90P Acura	Johnstone / Cameron / Peterson / Lesnett
IMSA GTO:	15	Ford Mustang	Martin / Dallenbach, Jr. / Gordon
IMSA GTU:	82	Mazda RX-7	Greer / Bacon / Mees / Uria
Le Mans Cars:	83	Nissan R90CK	Earl / Daly / Robinson / Brabham
Leaders:
lap 1:	00	Porsche 962C
laps 102-131:	84	Nissan R90C
lap 132:	83	Nissan R90C
laps 13-25:	1	Nissan R90C
laps 133-140:	84	Nissan R90C
laps 141-183:	2	Jaguar XJR-12
laps 184-194:	83	Nissan R90C
laps 195-200:	84	Nissan R90C
laps 201-235:	2	Jaguar XJR-12
laps 2-12:	6	Porsche 962C
laps 236-253:	83	Nissan R90C
laps 254-314:	2	Jaguar XJR-12
laps 26-29:	6	Porsche 962C
laps 30-31:	2	Jaguar XJR-12
laps 315-331:	84	Nissan R90C
laps 32-34:	6	Porsche 962C
laps 332-360:	6	Porsche 962C
laps 35-36:	0	Porsche 962C
laps 361-367:	83	Nissan R90C
laps 368-424:	16	Porsche 962C
laps 37-62:	2	Jaguar XJR-12
laps 425-455:	7	Porsche 962
laps 456-461:	84	Nissan R90C
laps 462-524:	7	Porsche 962
laps 525-528:	00	Porsche 962C
laps 529-719:	7	Porsche 962
laps 63-70:	83	Nissan R90C
laps 71-84:	84	Nissan R90C
lap 85:	16	Porsche 962C
laps 86-88:	6	Porsche 962C
laps 89-91:	16	Porsche 962C
laps 92-101:	83	Nissan R90C
Fastest Laps:
Overall:	84	Nissan R90CK	Julian Bailey (GB)	1:39.7650	206.7396 km/h	lap 518
IMSA GTP:	2	Jaguar XJR-12D	Davy Jones (USA)	1:41.0500	204.1099 km/h	lap 24
IMSA GTP Lights:	48	Spice SE90P Acura	Parker Johnstone (USA)	1:51.1970	185.9179 km/h	lap 334
IMSA GTO:	15	Ford Mustang	Wally Dallenbach, Jr. (USA)	1:54.1750	180.6456 km/h	lap 421
IMSA GTU:	38	Mazda RX-7	Roger Mandeville (USA)	2:03.7180	166.7119 km/h	lap 27
Pole Positions:
Overall:	6	Porsche 962 C	Bob Wollek (F)	1:50.8700	186.0321 km/h
IMSA GTP Lights:	48	Spice SE90P Acura	Parker Johnstone (USA)	2:04.3310	165.8896 km/h
IMSA GTO:	63	Mazda RX-7	Price Cobb (USA)	2:04.8460	165.2056 km/h
IMSA GTU:	96	Nissan 240SX	David Loring (USA)	2:16.8990	150.6603 km/h
Le Mans Cars:	1	Nissan R90CK	Derek Daly (IRL)	1:49.8640	187.7348 km/h
Notes of interest:
Top makes by numbers:	Chevrolet (9), Porsche (8), Nissan (6), Mazda (6), Spice (4)
Top engines by numbers:	Chevrolet (12), Porsche (9), Mazda (8), Nissan (6), Ford (3), Buick (3)
Top car types by numbers:	Porsche 962 (6), Chevrolet Camaro (6), Mazda RX-7 (5)
Driver nationalities:	USA (133), GB (11), CDN (5), D (3), F (3), NL (3), NZ (2), I (2), IRL (2), CO (2), AUS (2)
Most used colours:	white (39%), red (21%), blue (20%), yellow (9%), black (4%)
Engine positions:	mid-engined (47%), front-engined (47%), rear-engined (6%)
Average engine size:	3838 cc (with regard to 26% turbocharged cars and 17% cars with rotary engine an applicable size is 4957 cc)
Oldest known drivers:	Dick Greer (59), Bobby Unser (57), Brian Redman (54)
Youngest known drivers:	P. J. Jones (22), Butch Leitzinger (22), Justin Bell (23)

Official Race Programme:

Cover	Entry List	Schedule	Track Map