IMSA Prototype Challenge
Introduction '''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 injectionL2 Class*'''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 injectionL2 Class ''2006-2012 only''*'''Engine''': 1000cc Naturally aspirated Kawasaki or Suzuki*'''Weight''': 1,100 lb (500 kg) with driverL3 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
References
External links *  Official site