Published June 26, 2025. Last update June 26, 2025. 23 models online
Riley & Scott Mk III
Bob Riley is a racing car constructor that has developed many cars over the years. He worked on the Coyote and Wildcat Indycars, the Greenwood Corvette in the 1970’s and the front-engined Mustang GTP in the 1980’s. Another one of his designs was the 1991 Intrepid GTP car that he designed with his son Bill and was built by Pratt and Miller. A few laters later he partnered with Mark Scott and they built the Riley & Scott Mk III which was a successful World Sports Car that made use of different engines and was loved for its simplicity and easy handling.
1996 Daytona 24h, Riley & Scott Mk III – Oldsmobile. This Oldsmobile powered R&S from Doyle Racing car won the Daytona 24 hour race in 1996. It beat the Momo Ferrari 333 SP and Kudzu-Mazda, another R&S finished 5th. A month later, the same car won the Sebring 12h race. The championship was a big battle between the Doyle and Dyson Riley & Scotts and the Momo Ferrari. South African Wayne Taylor won the IMSA drivers title.
#4 Wayne Taylor (SA) / Scott Sharp (USA) / Jim Pace (USA) – 1st
Doyle Riley & Scott Mk III – 6.0 liter Oldsmobile V8, approximately. 550 hp. Pirelli tires. Weight 900 kg. Steel space frame with composite panels, chassisnr. R&S #004
- SPARK S 0007 (resin)
1997 Daytona 24h, Riley & Scott Mk III – Ford. Dyson Racing was R&S customer since 1995. They ran two cars in the IMSA Championship powered by Ford V8 engines. The #20 car won at Daytona while this #16 had to retire.
#16 Rob Dyson (USA) / James Weaver (GB) / Butch Leitzinger (USA) / Andy Wallace (GB) – DNF
Dyson Riley & Scott Mk III – 6.0 liter Ford Yates V8, approximately. 550 hp. Goodyear tires. Weight 900 kg. Steel space frame with composite panels, chassisnr. R&S #002
- SPARK S 0008 (resin)
1998 Le Mans 24h, Riley & Scott Mk III – Ford. French Team Solution F entered this Riley & Scott for a team including former motorbike 500 cc World Champion Wayne Gardner. The team had to retire with a broken engine.
#21 Philippe Gache (F) / Didier de Radigues (B) / Wayne Gardner (AUS) – DNF
Solution F Riley & Scott Mk III – 5.1 liter Ford V8, approximately. 540 hp. Pirelli tires. Weight 900 kg. Steel space frame with composite panels, chassisnr. R&S #015
- SPARK Riley & Scott Collection SCRS 04 (resin)
1999 Daytona 24h, Riley & Scott Mk III – Ford. In 1999, Dyson again won the Daytona 24h race and again with the same #002 chassis as two years before.
#20 Elliot Forbes-Robinson (USA) / Butch Leitzinger (USA) / Andy Wallace (GB) – 1st
Dyson Riley & Scott Mk III – 6.0 liter Ford Yates V8, approximately. 550 hp. Goodyear tires. Weight 900 kg. Steel space frame with composite panels, chassisnr. R&S #002
- SPARK Riley & Scott Collection SCRS 05 (resin)
1999 Road Atlanta, Riley & Scott Mk III – Judd. This Team Rafanelli car won the ALMS race at the beautiful track of Road Atlanta. In this case the Riley & Scott was supplied with a high revving Judd V10 instead of the usual American big V8.
#0 Mimmo Schiattarella (I) / Eric van de Poele (B) – 1st
Rafanelli Riley & Scott Mk III – 4.0 liter Judd GV4 V10, approximately. 600 hp. Yokohama tires. Weight 900 kg. Steel space frame with composite panels, chassisnr. R&S #014
- SPARK Riley & Scott Collection SCRS 06 (resin)
Cadillac
Cadillac wanted to compete at Le Mans with a car that was powered by their new V8 engine. Instead of developing a car themselves, Cadillac hired the expertise from Bob Riley and his son Bill to convert the Riley & Scott Mk III into a Cadillac Northstar LMP. The car was much slower and less reliable than the also new Audi R8.
2000 Le Mans 24h, Cadillac Northstar LMP. Cadillac entered no less than 4 cars for their first Le Mans. Two silver colored cars were operated by Riley Motorsport, two black cars by the French DAMS team. It was a disaster; the #3 car finished only 19th – 68 laps behind the winning Audi – and was best of the Cadillacs. The Riley cars finished 21st and 22nd while the second DAMS retired.
#3 Emmanuel Collard (F) / Eric Bernard (F) / Franck Montagny (F) – 19th
#4 Christophe Tinseau (F) / Marc Goossens (B) / Kristian Kolby (DK) – DNF
DAMS Cadillac Northstar LMP – 4.0 liter Cadillac Northstar V8 twin turbo, approximately. 570 hp. Pirelli tires. Weight 915 kg. Carbon fibre and aluminum honeycomb monocoque chassisnr. R&S LMP-00-005 & LMP-00-002
- Top Model Collection #003 & #004 (diecast)
2001 Le Mans 24h, Cadillac Northstar LMP01. Cadillac returned to Le Mans in 2001 with two aerodynamically improved cars from 2000, especially on the position of the radiators and a somewhat longer, more aerodynamic tail. This year the Caddy’s used Michelin tires. DAMS were again running the Northstars but these were too slow, not only compared to the Audi’s. The #5 car had to retire after it crashed.
#6 Wayne Taylor (SA) / Max Angelelli (I) / Christophe Tinseau (F) – 15th
DAMS Cadillac Northstar LMP01 – 4.0 liter Cadillac Northstar V8 twin turbo, approximately. 580 hp. Michelin tires. Weight 915 kg. Carbon fiber and aluminum honeycomb monocoque, chassisnr. R&S LMP-00-004
- SPARK Cadillac Collection SCCN 06 (resin)
2002 Le Mans 24h, Cadillac Northstar LMP02. Not really a Riley anymore! The 2002 car was completely new designed by Nigel Stroud, who already worked on the aerodynamics of the 2001 cars. New Garrett turbo chargers were fitted and the gearbox was now operated pneumatically. The carbon fibre monocoque was produced in England. Cadillac announced mid-season that the project would be stopped by the end of 2002, after that some small successes were achieved in the American Le Mans Series.
#6 Wayne Taylor (SA) / Max Angelelli (I) / Christophe Tinseau (F) – 9th
DAMS Cadillac Northstar LMP02 – 4.0 liter Cadillac Northstar V8 twin turbo, approximately. 600 hp. Michelin tires. Weight 918 kg. Carbon fiber and aluminum honeycomb monocoque, chassisnr. DPS #LMP-02-002
- SPARK Cadillac Collection SCCN 07 (resin)
Riley & Scott Mk IIIC
Once the Northstar LMPs for the 2001 season were completed, Riley & Scott turned their attention back to their Mk III. Riley & Scott chose to start from scratch and develop an all-new car which continued the Mk III’s simple lay-out, but received some of the advancements that Riley & Scott had used on the Northstar LMP.
2002 Le Mans 24h, Riley & Scott Mk IIIC – Ford. The old Riley & Scott Mk III has a great track record. The new Mk IIIC has the same lay-out as the original Mk III but with a much lower body line. Unlike the Cadillacs, the radiator is again placed in the front as it was in the Mk III. This car retired after 194 laps with a broken V8.
#4 Jim Matthews (USA) / Marc Goossens (B) / Didier Theys (B) – DNF
Riley & Scott Mk IIIC – 6.0 liter Ford Elan V8, approximately. 600 hp. Goodyear tires. Weight 920 kg. Steel space frame with composite panels, chassisnr. R&S #01-004
- SPARK Cadillac Collection SCCRS 11 (resin)
2003 Le Mans 24h, Riley & Scott Mk IIIC – Ford. The Riley & Scott Mk IIIC was a relative simple car, but powered by a big V8 it was quite quick. This year, the car qualified on the 4th row, but again retired with a broken V8.
#4 Jim Matthews (USA) / Marc Goossens (B) / Christophe Tinseau (F) – DNF
Riley & Scott Mk IIIC – 6.0 liter Ford Yates V8, approximately. 600 hp. Goodyear tires. Weight 920 kg. Steel space frame with composite panels, chassisnr. R&S #01-005
- SPARK Cadillac Collection SCCRS 12 (resin)
Riley Daytona Prototypes
Since 2000, two sports car series existed in the USA; the American Le Mans Series and the Grand-Am Series which was the successor of the USSRC. In 2003, Grand-Am introduced an entire new sports car series that was a low-cost alternative for the Le Mans Prototypes and named it Daytona Prototypes. Standardized components, road legal based engines and a restricted number of chassis suppliers were key elements. One of those chassis suppliers was Riley Technologies.
2005 Daytona 24h, Riley Mk XI – Pontiac. The 2005 Daytona winner was this Riley from SunTrust Racing using a V8 Pontiac engine. All three drivers are from outside North America, but have lots of experience in American racing series. Wayne Taylor already had won Daytona before in a Riley & Scot Mk III.
#10 Wayne Taylor (SA) / Max Angelelli (I) / Emmanuel Collard (F) – 1st
SunTrust Riley Mk XI – 6.0 liter Pontiac V8, approx. 500 hp. Hoosier tires. Weight 1030 kg. Steel space frame, chassisnr. Riley #008
- SPARK Daytona Prototypes 43DA05 (resin)
2006 Daytona 24h, Riley Mk XI – Lexus. Chip Ganassi Racing entered two cars with Lexus V8 engines this year. The #1 car retires, but this one wins the 24 hour race. It was the first of three consecutive wins for the Japanese engine provider.
#2 Scott Dixon (
USA) / Dan Wheldon (USA
) / Casey Mears (USA) – 1st
Ganassi Riley Riley MkXI – 4.4 liter Lexus (Toyota) V8, approx. 500 hp. Hoosier tires. Weight 1020 kg. Steel space frame, chassisnr. Riley #002
- SPARK Daytona Prototypes 43DA06 (resin)
2009 Daytona 24h, Riley Mk XX – Porsche. The famous Penske Racing team that won so many titles in sports cars and Indianapolis competes with this Riley-Porsche. Three works drivers from Porsche piloted the car. They missed pole position by 1/1000 second and finish the race sixth after leading it after the start.
#16 Timo Bernhard (D) / Romain Dumas (F) / Ryan Briscoe (AUS) – 6th
Penske Riley MkXX – 4.0 liter Porsche flat-6, approx. 500 hp. Pirelli tires. Weight 1020 kg. Steel space frame, chassisnr. Riley #036
- SPARK S 2997 (resin)
2009 Daytona 24h, Riley Mk XI – Porsche. Daytona Prototypes exist since 2003. Great equality in chassis, restricted engines and no exotic materials are the keywords. In the beginning there was some criticism because of the strange looking cars but that has disappeared. The class offers full grids of bright coloured cars and great motorsport. The 2009 Daytona winner was this Brumos Riley with a Porsche engine.
#58 Darren Law (USA) / David Donohue (
USA) / Buddy Rice (
USA) / Antonio Garcia (
E) – 1st
Riley Mk XI – 4.0 liter Porsche M96.80 flat-6 – Approx. 500 hp. Pirelli tires. Weight 1020 kg. Steel space frame chassisnr. #029
- SPARK 43DA09 (resin)
2011 Daytona 24h, Riley-Porsche MkXX. The 2010 Daytona winner was this Riley from Action Express Racing that developed the V8 engine from the Porsche Cayenne for racing. It is supposed to be a private team, but the presence of former works driver Mike Rockenfeller makes one doubt. The same year Rockenfeller also won Le Mans for Audi.
#9 Terry Borcheller (USA) / Joao Barbosa (POR) / Mike Rockenfeller (D) / Ryan Dalziel (USA)– 1st
Action Express Riley Mk XX- 5.0 liter Porsche – V8 90º – Approx. 500 hp. Pirelli tires. Weight 1020 kg. Steel space frame chassisnr. #018
- SPARK 43DA10 (resin)
2011 Daytona 24h, Riley-Porsche MkXI. Jörg Bergmeister, factory driver for Porsche, put this Flying Lizard Riley-Porsche on pole position for this year’s Daytona 24h race. Unfortunately it had tot retire after it caught fire. The Flying Lizard Riley used the latest version of the traditional flat-6 Porsche engine and not the V8 that propelled last year’s winner.
#45 Jörg Bergmeister (D) / Seth Neiman (USA) / Johannes van Overbeek (USA) / Patrick Long (USA) – DNF / fire
Riley Mk XI – 4.0 liter Porsche M97.80 flat-6, approx. 490 hp. Continental tires. Weight 1050 kg. Steel space frame, chassisnr. Riley #029
- SPARK Flying Lizard (resin)
Riley Technologies / Riley Motorsports
Riley Technologies developed prototypes as well as GT-cars.
They also provided the technical support on the racetrack as Riley Motorsports.
2010 Daytona 24h, Mazda RX8. While the rotary engines have been banned from sports car racing and Mazda switched to ‘normal’ petrol engines, Mazda still raced ‘rotary chain saws’ in GT. In the Grand Am Series most attention goes to the Daytona Prototypes which are the fastest. But behind that, great GT racing is going on. The GT class is surprisingly not dominated by the traditional GT makes, but by the Riley designed Mazda. This RX-8 won the GT class at Daytona in front of some 911 GT3 cup, Camaro, BMW M6 and more Mazda’s.
Speedsource #70 David Haskell (USA) / Sylvain Tremblay (CAN) / Nick Ham (USA) / Jonathan Bomarito (USA) – 8th / 1st GT
Mazda RX-8 – 2.0 liter Mazda 20B RENESIS 3-rotor, approx 450 hp. Pirelli tires. Weight 1100 kg. Steel space frame, chassisnr. #Z-002 (Riley)
- SPARK ML013 (resin)
2013 Le Mans 24h, SRT Viper GTS/R. The impressive Chrysler / Dodge Vipers dominated GT racing end of the last century. Even after the works support stopped, the mighty V10’s remained succesful in the hands of privateers for some years. Now Chrysler tries again with the new Viper. SRT Motorsport enters 2 cars that are developed by Riley in the American Le Mans Series and at Le Mans. Both cars make it to the finish but way back.
#93 Kuno Wittmer (USA) / Jonathan Bomarito (
USA) / Tom Kendall (
USA) – 31st / 9th GTE-Pro
SRT Viper GTS/R – Chrysler 356-T6 V10 90º, approx. 600 hp. Michelin tires. Weight 1200 kg. Steel monocoque, chassisnr. Riley #GTSR2C02
- SPARK S3771 (resin)
2014 United SportsCar Championship, SRT Viper GTS/R. SRT Motorsport enters 2 cars that are developed by Riley in the United SportsCar Championship. They skip Le Mans to cencentrate entirly on th US title. The #93 Viper only wins two races but is very consistent. SRT Motorsports takes the team championship and Kumo Wittmer wins the drivers title.
#93 Kuno Wittmer (USA) / Jonathan Bomarito (
USA) – 1st championship
SRT Viper GTS/R – Chrysler 356-T6 V10 90º, approx. 600 hp. Michelin tires. Weight 1200 kg. Steel monocoque, chassisnr. Riley #GTSR2C02
- SPARK US 009 #018 / 1000 pcs (resin)
2015 Le Mans 24h, SRT Viper GTS/R. Ben Keating, owner of dealer Viper Exchange, manages to get one of the Riley prepared factory cars and brings it to Le Mans. They do well but have to retire with a broken gearbox not long before the end of the race.
#53 Jeroen Bleekemolen (NL) / Ben Keating (USA
) / Marc Miller (USA) – DNF
SRT Viper GTS/R – Chrysler 356-T6 V10 90º, approx. 600 hp. Michelin tires. Weight 1200 kg. SSteel monocoque, chassisnr. Riley #GTSR2C03
- SPARK S4669 (resin)
2017 Daytona 24h – AMG Mercedes GT3. The Riley Mercedes did very well in its debut in the GTD (GT3) category at Daytona. In wet conditions it even took the lead in its category, but on a dry track it lacked some topspeed.
#33 Ben Keating (USA) / Jeroen Bleekemolen (NL) / Mario Farnbacher (D) / Adam Christodoulou (GB) – 20th / 3rd
Riley Motorsports Mercedes AMG GT3 – 6.2 liter Mercedes M159 AMG V8 90º, approx. 500 hp. Hankook tires. Weight 1300 kg. Aluminium space frame, chassisnr. C190 AMG C190 #16 057
- IXO GTM 108 (diecast)
2017 Le Mans 24h, Riley Mk XXX – Gibson. In the current regulations, only 4 manufacturers were homologated to produce LMP2 cars. Oreca, Ligier/Onroak, Dallara and Riley/Multimatic. The Oreca 07 is the best car by far and after a few years the entire grid switched to Oreca. The Riley Mk XXX or Mk30 is build in cooperation with Multimatic Motorsports and only a few cars have been sold. One of these was entered by Ben Keating for the 2017 Le Mans 24h race.
#43 Jeroen Bleekemolen (NL) / Ben Keating (USA) / Ricky Taylor (USA) – 47th
Keating Riley Mk XXX – 4.2 liter Gibson GK428, approximately. 600 hp. Michelin tires. Weight 900 kg. Carbon fibre monocoque, chassisnr. Riley/Multimatic #005
- SPARK S 5827 (resin)
2019 Daytona 24h, Mercedes AMG GT3. American racing driver Ben Keating has been racing for quite some time together with Dutchman Jeroen Bleekemolen. This year they managed to lay their hands on an AMG GT3. The Riley Motorsports team was long in contention for a class win but because of a late spin from one of his teammates, they only finished 6th in GTD (the IMSA counterpart of European GT3).
#33 Jeroen Bleekemolen (NL) / Ben Keating (USA) / Felipe Fraga (BR) / Luca Stolz (D) – 22nd / 6th GTD
Riley Motorsports Mercedes AMG GT3 – 6.2 liter Mercedes M159 V8 – approximately. 500 hp. Michelin tires. Weight 1300 kg. Aluminium space frame, chassisnr. C190 AMG #187
- SPARK US077 #087 / 500 pcs (resin)
In October 2024, Bob Riley passed away at the age of 93.
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