The 1991 SunBank 24 at Daytona was a 24-hour endurance sports car race held on February 2–3,^[1] 1991 at the Daytona International Speedway road course. The race served as the opening round of the 1991 IMSA GT Championship.

Victory overall and in the GTP class went to the No. 7 Joest Racing Porsche 962 driven by Frank Jelinski, Henri Pescarolo, Hurley Haywood, Bob Wollek and "John Winter".^[2][3] Victory in the LM class went to the No. 83 Nissan Performance Technology Nissan R90CK driven by Bob Earl, Derek Daly, Chip Robinson, and Geoff Brabham. Victory in the GTP Lights class went to the No. 48 Acura Spice SE90P driven by Parker Johnstone, Steve Cameron, Doug Peterson, and Bob Lesnett. The GTO class was won by the No. 15 Whistler Mustang Ford Mustang driven by Mark Martin, Wally Dallenbach Jr., and Robby Gordon. Finally, the GTU class was won by the No. 82 Greer Racing Mazda RX-7 driven by Dick Greer, Al Bacon, Mike Mees, and Peter Uria.

Race results

Class winners in bold.

Pos	Class	No	Team	Drivers	Chassis	Tyre	Laps
					Engine
1	GTP	7	Joest Racing	Frank Jelinski Henri Pescarolo Hurley Haywood Bob Wollek "John Winter"	Porsche 962	G	719
					Porsche 3.0L Flat 6 Twin-Turbo
2	LM	83	Nissan Performance Technology	Bob Earl Derek Daly Chip Robinson Geoff Brabham	Nissan R90CK	G	701
					Nissan 3.5L V8 Twin-Turbo
3	GTP	10	Wynn's	Chris Cord John Hotchkis Jim Adams Rob Dyson	Porsche 962	G	692
					Porsche 3.0L Flat 6 Twin-Turbo
4	GTO	15	Roush Racing	Mark Martin Wally Dallenbach Jr. Robby Gordon	Ford Mustang	G	672
					Ford 6.0L V8 N/A
5 DNF	GTP	00	Jochen Dauer Racing	Michael Andretti Mario Andretti Jeff Andretti	Porsche 962	BF	663
					Porsche 3.0L Flat 6 Twin-Turbo
6	GTO	12	Whistler Radar	John Fergus Max Jones Dorsey Schroeder	Ford Mustang	G	658
					Ford 6.0L V8 N/A
7 DNF	Lights	48	Acura	Parker Johnstone Steve Cameron Doug Peterson Bob Lesnett	Spice SE90P	BF	654
					Acura 3.0L V6 N/A
8	Lights	36	Ecurie Scientific	John Grooms Michael Greenfield Frank Jellinek Peter Greenfield	Kudzu DG-1	G	632
					Mazda 1.3L Rotary
9 DNF	Lights	54	HDF Motorsport	Michael Dow Andrew Hepworth Hendrik ten Cate	Spice SE89P	G	620
					Buick 3.0L V6 N/A
10	GTO	90	Roush Racing	Jim Stevens Craig Bennett Tom Grunnah Jim Jaeger	Ford Mustang	G	619
					Ford 6.0L V8 N/A
11	GTP	4	Tom Milner Racing	Brian Bonner Derrike Cope Jeff Kline Scott Sharp	Spice SE89P	G	611
					Chevrolet 6.0L V8 N/A
12	GTO	92	EDS/Mobil/Goodyear	R. K. Smith Andy Pilgrim Doc Bundy Joe Varde	Chevrolet Corvette ZR-1	G	611
					Chevrolet LT5 5.7L V8 N/A
13	GTU	82	Greer Racing	Dick Greer Al Bacon Mike Mees Peter Uria	Mazda RX-7	G	605
					Mazda 2.6L 2 Rotor
14	GTO	63	Mazda Motorsports	Brian Redman John O'Steen Price Cobb Pete Halsmer	Mazda RX-7	G	576
					Mazda 3.1L 4 Rotor
15	GTU	37	Botero Racing	Honorato Espinosa Rob Wilson Miguel Morejon Felipe Solano	Mazda MX-6	Y	576
					Mazda 2.6L 2 Rotor
16	GTU	38	Mandeville Auto Tech	Roger Mandeville Amos Johnson Kelly Marsh	Mazda RX-7	Y	568
					Mazda 2.6L 2 Rotor
17	Lights	42	Intersport	Geoff Nicol David Tennyson Todd Brayton	Tiga GT286	G	556
					Mazda 1.3L Rotary
18	Lights	09	R. J. Racing	Stephen Hynes Tommy Johnson Rob Robertson John Sheldon	Tiga GC287	G	545
					Buick 3.0L V6 N/A
19	GTU	26	Border Cantina	Chris Craft Alex Job Joe Pezza Jack Refenning	Porsche 911	G	494
					Porsche 3.2L Flat 6 N/A
20 DNF	LM	84	Nissan Performance Technology	Julian Bailey Steve Millen Arie Luyendyk Jeremy Dale	Nissan R90CK	G	472
					Nissan 3.5L V8 Twin-Turbo
21	GTO	91	EDS/Mobil/Goodyear	Stu Hayner Don Knowles John Heinricy Scott Lagasse Tommy Morrison	Chevrolet Corvette ZR-1	G	464
					Chevrolet LT5 6.0L V8 N/A
22 DNF	GTP	16	Dyson Racing	James Weaver John Paul Jr. Tiff Needell	Porsche 962	G	450
					Porsche 3.0L Flat 6 Twin-Turbo
23	GTU	72	Jay Kjoller Motorsports	Steve Volk Jay Kjoller Patrick Mooney	Porsche 911	G	449
					Porsche 3.2L Flat 6 N/A
24 DNF	GTP	5	Tom Milner Racing	Mike Brockman Tim McAdam Fred Phillips Jeff Davis	Spice SE89P	G	448
					Chevrolet 6.0L V8 N/A
25	GTO	70	M/J Engineering	Lou Gigiliotti Boris Said Mike Nolan Roger Schramm Peter Cunningham	Oldsmobile Cutlass	F	445
					Oldsmobile 6.0L V8 N/A
26 DNF	GTU	66	North Coast Racing	Leighton Reese Mike Gagliardo Brad Hoyt	Mazda RX-7	F	442
					Mazda 2.6L 2 Rotor
27	GTO	11	Robert Williams	Jon Gooding John Annis Mark Kennedy Nort Northam Tom Panaggio	Chevrolet Camaro	G	427
					Chevrolet 6.0L V8 N/A
28 DNF	GTP	98	All American Racers	Mark Dismore Rocky Moran P. J. Jones	Eagle HF89	G	408
					Toyota 2.1L I4 Turbo
29	GTO	87	A&R Auto Electric	Grant Hill Nick Holmes Anthony Puleo Daniel Urrutia	Chevrolet Camaro	G	396
					Chevrolet 6.0L V8 N/A
30 DNF	GTP	2	Bud Light Jaguar Racing	Davy Jones Scott Pruett Raul Boesel Derek Warwick	Jaguar XJR-12	G	379
					Jaguar 6.5L V12 N/A
31 DNF	GTP	6	Joest Racing	Bob Wollek (pole position) Bernd Schneider Paolo Barilla Massimo Sigala	Porsche 962	G	360
					Porsche 3.0L Flat 6 Twin-Turbo
32 DNF	Lights	9	Essex Racing	Jim Pace Tom Hessert Jr. Charles Morgan	Kudzu DG-1	G	359
					Buick 3.0L V6 N/A
33 DNF	Lights	20	Carlos Bobeda Racing	Kaming Ko Mike Sheehan Ron McKay Charles Monk	Tiga GT287	G	328
					Chevrolet 3.0L V6 N/A
34	GTO	45	First Coast Trucks	John Forbes Ken Fengler Bob Hundredmark Tom Curren	Chevrolet Corvette	G	315
					Chevrolet 6.0L V8 N/A
35 DNF	GTP	0	Jochen Dauer Racing	Al Unser Jr. Bobby Unser Robby Unser Al Unser	Porsche 962	BF	270
					Porsche 3.0L Flat 6 Twin-Turbo
36 DNF	GTO	28	Del Russo Taylor	Don Arpin Jon Olch Tim Banks Scott Watkins	Chevrolet Camaro	G	234
					Chevrolet 6.0L V8 N/A
37 DNF	GTO	53	Hi-Tech Coating	Richard McDill Bill McDill Jim Burt	Chevrolet Camaro	G	223
					Chevrolet 6.0L V8 N/A
38 DNF	GTU	96	Fastcolor Auto Art	Chuck Kurtz Bob Leitzinger David Loring Don Reynolds	Nissan 240SX	T	192
					Nissan 2.8L V6 N/A
39 DNF	GTU	57	Kryder Racing	Henry Camferdam Phil Krueger Alistair Oag Reed Kryder	Nissan 240SX	G	159
					Nissan 2.8L V6 N/A
40	GTP	60	Gunnar Porsche	Jay Cochran Derek Bell Justin Bell	Gunnar 966	BF	83
					Porsche 3.0L Flat 6 Twin-Turbo
41	GTO	04	Henry Brosnaham	Bobby Scolo Steve Burgner John Macaluso	Chevrolet Camaro	G	78
					Chevrolet 6.0L V8 N/A
42 DNF	GTP	99	All American Racers	Juan Manuel Fangio II Willy T. Ribbs Andy Wallace	Eagle HF89	G	60
					Toyota 2.1L I4 Turbo
43 DNF	GTO	62	Mazda Motorsports	John Morton Calvin Fish Pete Halsmer	Mazda RX-7	G	50
					Mazda 3.1L 4 Rotor
44 DNF	LM	1	Nissan Performance Technology	Arie Luyendyk Julian Bailey Derek Daly	Nissan R90CK	G	47
					Nissan 3.5L V8 Twin-Turbo
45 DNF	GTO	06	Overbagh Motor Racing	Oma Kimbrough Hoyt Overbagh Mark Montgomery Kent Painter	Chevrolet Camaro	G	37
					Chevrolet 6.0L V8 N/A
46 DNF	GTU	95	Fastcolor Auto Art	Butch Leitzinger David Loring Chuck Kurtz Bob Leitzinger	Nissan 240SX	T	13
					Nissan 2.8L V6 N/A
DNS	GTP	3	Bud Light Jaguar Racing	John Nielsen	Jaguar XJR-12	G	-
					Jaguar 6.5L V12 N/A
Source:[2]