Daytona 24 Hours 1990 - Racing Sports Cars

Event: SunBank 24 at Daytona		Date: 4.2.1990
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:	warm, dry
Start time:	3/2 15:30
Grid:	unknown
Distance:	24 hours
Attendance:	35000

Entered:	66
Practiced:	61
Qualified:	60
Started:	55
Finished:	22

Classes:	Pract	Start
IMSA GTP	18	15
IMSA GTP Lights	16	16
IMSA GTO	14	13
IMSA GTU	13	11

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

Race notes:
4 full-course cautions for 71 minutes (23 laps)

Pre-race sessions:
3 qualifying sessions held for a total of 60 minutes on 1-2/2
5 non-qualifying practice sessions held for a total of 345 minutes on 1-2/2
30 minute pre-race warm-up held

Winners:
Overall:	61	Jaguar XJR-12D	Jones / Lammers / Wallace
IMSA GTP Lights:	36	Argo JM16 Mazda	Grooms / Greenfield / Jellinek
IMSA GTO:	15	Mercury Cougar XR-7	Gordon / Fish / St. James
IMSA GTU:	71	Mazda RX-7	Uria / Dotson / Pace / Scott
Leaders:
laps 120-126:	61	Jaguar XJR-12
laps 127-146:	83	Nissan GTP ZX-T
laps 147-150:	60	Jaguar XJR-12
laps 1-5:	86	Porsche 962
laps 151-159:	61	Jaguar XJR-12
laps 160-181:	60	Jaguar XJR-12
laps 182-226:	61	Jaguar XJR-12
laps 227-267:	83	Nissan GTP ZX-T
laps 268-281:	61	Jaguar XJR-12
laps 282-285:	83	Nissan GTP ZX-T
laps 286-629:	61	Jaguar XJR-12
laps 34-36:	86	Porsche 962
laps 37-40:	0	Porsche 962C
laps 41-44:	60	Jaguar XJR-12
laps 45-81:	61	Jaguar XJR-12
laps 630-664:	60	Jaguar XJR-12
laps 6-33:	0	Porsche 962C
laps 665-699:	61	Jaguar XJR-12
laps 700-709:	60	Jaguar XJR-12
laps 710-737:	61	Jaguar XJR-12
laps 738-741:	60	Jaguar XJR-12
laps 742-761:	61	Jaguar XJR-12
laps 82-83:	60	Jaguar XJR-12
lap 84:	61	Jaguar XJR-12
laps 85-87:	60	Jaguar XJR-12
laps 88-93:	61	Jaguar XJR-12
laps 94-119:	60	Jaguar XJR-12
Fastest Laps:
Overall:	61	Jaguar XJR-12D	Jan Lammers (NL)	1:38.5960
IMSA GTP Lights:	80	Spice SE88P Ferrari	Martino Finotto (I)	1:57.1140	176.1121 km/h	lap 9
IMSA GTO:	1	Mazda RX-7	Pete Halsmer (USA)	1:52.4250	183.4588 km/h	lap 36
IMSA GTU:	38	Mazda MX-6	Roger Mandeville (USA)	2:03.1710	167.4523 km/h	lap 12
Pole Positions:
Overall:	86	Porsche 962	Bob Wollek (F)	1:37.8320	210.8241 km/h
IMSA GTP Lights:	4	Spice SE88P Buick	Scott Schubot (USA)	1:50.6400	186.4184 km/h
IMSA GTO:	1	Mazda RX-7	Pete Halsmer (USA)	1:47.8670	191.2110 km/h
IMSA GTU:	95	Nissan 240SX	Leitzinger / Loring / Leitzinger	1:59.2510	172.9449 km/h
Notes of interest:
Top makes by numbers:	Porsche (9), Spice (9), Chevrolet (7), Mazda (6), Nissan (5)
Top engines by numbers:	Porsche (10), Mazda (10), Chevrolet (9), Nissan (6), Pontiac (5)
Top car types by numbers:	Porsche 962 (8), Chevrolet Camaro (6), Mazda RX-7 (4), Spice SE88P (4)
Driver nationalities:	USA (143), CDN (8), GB (7), F (6), I (4), MEX (4), D (3), AUS (3), CH (2), FIN (2), NL (2), IRL (2)
Most used colours:	white (35%), red (18%), blue (14%), yellow (13%), black (7%)
Engine positions:	mid-engined (59%), front-engined (38%), rear-engined (3%)
Average engine size:	3411 cc (with regard to 21% turbocharged cars and 18% cars with rotary engine an applicable size is 4362 cc)
Oldest known drivers:	Dick Greer (58), Martino Finotto (57), Claude Ballot-Léna (54)
Youngest known drivers:	Butch Leitzinger (21), Paul Dallenbach (23), Davy Jones (26)
Female drivers:	Linda Ludemann, Lyn St. James

Official Race Programme:

Cover	Entry List	Schedule	Track Map