Daytona 24 Hours 1985 - Racing Sports Cars

Event: The 23rd Annual SunBank 24 at Daytona		Date: 3.2.1985
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)

Weather:	intermittent rain
Start time:	2/2 15:30
Grid:	2-2-2, PP left
Distance:	24 hours
Attendance:	33000

Entered:	108
Practiced:	89
Qualified:	80
Started:	76
Finished:	29

Classes:	Pract	Start
IMSA GTP	33	29
IMSA GTP Lights	3	3
IMSA GTO	31	27
IMSA GTU	22	17

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

Race notes:
6 full-course cautions for 28 laps

Pre-race sessions:
2 qualifying sessions held for a total of 60 minutes on 31/1-1/2
6 non-qualifying practice sessions held for a total of 360 minutes on 31/1-1/2
30 minute pre-race warm-up held

Winners:

Overall:	8	Porsche 962	Foyt / Wollek / Unser / Boutsen
IMSA GTP Lights:	93	Argo JM16 Mazda	Marsh / Pawley / Marsh
IMSA GTO:	65	Ford Mustang	Dallenbach, Jr. / Jones / Bundy
IMSA GTU:	71	Mazda RX-7	Johnson / Dunham / Terada

Fastest Laps:

Overall:	14	Porsche 962	Al Holbert (USA)	1:48.435	190.210 km/h	lap 2
IMSA GTP Lights	63	Argo JM16 Mazda	Jim Downing (USA)	1:58.895	173.476 km/h	lap 582
IMSA GTO	90	Pontiac Firebird	Tommy Riggins (USA)	1:57.109	176.120 km/h	lap 554
IMSA GTU	87	Porsche 924 Carrera	Elliot Forbes-Robinson (USA)	2:03.592	166.883 km/h	lap 4

Pole Positions:

Overall:	45	March 85G Buick	John Paul, Jr. (USA)	1:41.490	203.225 km/h
IMSA GTP Lights	93	Argo JM16 Mazda	Kelly Marsh (USA)	2:01.600	169.617 km/h
IMSA GTO	06	Ford Mustang	Willy T. Ribbs (USA)	1:52.427	183.456 km/h
IMSA GTU	87	Porsche 924 Carrera	Elliot Forbes-Robinson (USA)	2:02.388	168.524 km/h

Notes of interest:

Top makes by numbers:	Porsche (22), Mazda (13), Chevrolet (10), March (8), Pontiac (6)
Top engines by numbers:	Porsche (24), Chevrolet (16), Mazda (16), Pontiac (6), Ford (5)
Top car types by numbers:	Mazda RX-7 (13), Porsche 962 (6), Chevrolet Corvette (6)
Driver nationalities:	USA (193), CDN (6), AUS (5), F (4), GB (3), D (3), ZA (3), J (3), I (2), IRL (2), ES (2), B (2)
Engine positions:	front-engined (43%), middle-engined (38%), rear-engined (19%)
Oldest known drivers:	Claude Ballot-Léna (49), Brian Redman (48), Bobby Allison (48)
Youngest known drivers:	John Jones (20), Darin Brassfield (22), Scott Pruett (25)
Woman drivers:	Lyn St. James

Official Race Programme:

Cover	Entry List	Schedule	Track Map