IMSA Prototype Challenge (formerly IMSA Prototype Lites) was a racing series featuring two classes of single-seat prototype cars racing simultaneously. The series was sanctioned by the International Motor Sports Association (IMSA). Most races were held in support of the WeatherTech SportsCar Championship. The series raced LMP3 class prototype sportscars. The cars have grown in size and speed since its 2006 introduction, starting from four-cylinder and motorcycle powered race cars to large V8 powered cars. Each race was 1 hour and 45 minutes long apart from the season opening 3 hour race at Daytona International Speedway.
The series' final season was in 2022. For 2023, the series was replaced with the IMSA VP Racing SportsCar Challenge.
Car Specifications
LMP3 Class Minimum weight Maximum length Maximum width Engine Naturally aspirated Nissan V8 5.6L Fuel tank size Maximum wheel diameter Maximum wheel width
Former classes
MPC Class Engine: 2.0-liter, Naturally aspirated Mazda MZR engine Gearbox: 6 Speed Sequential Manual Transmission Weight: 1,425 lb (646 kg) with driver Fuel Delivery: Electronic fuel injection2014 Technical Regulations , IMSA.com/competitors, Retrieved 20 September 2014
L2 Class2014 Technical Regulations , IMSA.com/competitors, Retrieved 20 September 2014 Engine: 2.3-liter, Naturally aspirated Mazda MP2 Gearbox: 6 Speed Sequential Manual Transmission Weight: 1,425 lb (646 kg) with driver Fuel Delivery: Electronic fuel injection
L2 Class 2006-2012 only Engine: 1000cc Naturally aspirated Kawasaki or Suzuki Weight: 1,100 lb (500 kg) with driver
L3 Class 2006-2009 only, class discontinued for 2010 Engine: 2.3-liter, Naturally aspirated Mazda MZR Weight: 1,350 lb (612 kg) with driver
Champions SeasonClassDriver ChampionMasters ChampionTeam Champion 2006 L1 Adam Pecorari n/a Cape Motorsports L2 Dan McBreen n/a PVM Racing L3 Robert Mumm n/a n/a 2007 L1 Gerardo Bonilla n/a B-K Motorsports L2 Robby Card n/a PVM Racing L3 Richard Spicer n/a Spicer-Hagerman 2008 L1 Jonathan Goring Jon Brownson Comprent Motorsports L2 Tom Drewer Eric Vassian WEST Racing L3 Chris Funk Chris Funk KC Racing 2009 L1 Joel Feinberg Gary Gibson Eurosport Racing L2 John Weisberg Alain Nadal Berg Racing L3 Chris Doyle Chris Funk Surface Exploration 2010 L1 Charlie Shears Charlie Shears Core Autosport L2 John Weisberg Jim Garrett Berg Racing 2011 L1 Ricardo Vera Daniel Mancini Eurosport L2 Robert Sabato Alan Wilzig 6th Gear Racing 2012 L1 Tristan Nunez Jon Brownson Performance Tech L2 Scott Tucker Alan Wilzig Level 5 Motorsports 2013 L1 Sean Rayhall Jon Brownson Performance Tech L2 Brian Alder Jerome Mee Ansa Motorsports 2014 L1 Mikhail Goikhberg John Falb JDC Motorsports L2 Brian Alder Jerome Mee BAR1 Motorsports 2015 L1 Kenton Koch John Falb JDC Motorsports L2 Brian Alder n/a BAR1 Motorsports2016 L1 Clark Toppe Joel Janco JDC Motorsports2017 LMP3 Colin Thompson Naj Husain P1 Motorsports MPC Kyle Masson Stuart Rettie Performance Tech Motorsports2018 LMP3 Kris Wright Cameron Cassels #30 Extreme Speed Motorsports MPC Jon Brownson n/a #34 Eurosport Racing 2019 LMP3 Austin McCusker Rodrigo Pflucker Joel Janco #47 Forty 7 Racing 2020 LMP3 Matthew Bell Naveen Rao Steven Thomas #64 K2R Motorsports LLC 2021 LMP3-1 Dakota Dickerson Josh Sarchet David Grant Keith Grant MLT Motorsports LMP3-2 Danny Kok George Staikos Danny Kok George Staikos Conquest Racing 2022 LMP3 Tõnis Kasemets n/a Wulver Racing
Circuits
Barber Motorsports Park (2017–2018) Canadian Tire Motorsport Park (2007–2019, 2022) Circuit of the Americas (2013) Circuit Trois-Rivières (2016–2017) Daytona International Speedway (2018–2021) Kansas Speedway (2014) Laguna Seca (2007–2008, 2010–2013, 2016) Lime Rock Park (2006–2011, 2017, 2003–2015) Mid-Ohio Sports Car Course (2006, 2011, 2013, 2019–2022) New Jersey Motorsports Park (2009–2010) NOLA Motorsports Park (2015) Road America (2006, 2009–2015, 2020) Road Atlanta (2006–2022) Sebring International Raceway (2007–2021) Utah Motorsports Campus (2007–2010, 2012) Virginia International Raceway (2012, 2014–2015, 2018–2022) Watkins Glen International (2014–2017, 2021)
References
External links Official site