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The Dallara P217 is a sport prototype built by Dallara Automobili to the 2017 FIA/ACO regulations for the Le Mans Prototype LMP2 class. The car also meets the regulations for the Prototype Class of the IMSA WeatherTech Sportscar Championship. It currently is active in the FIA World Endurance Championship,[1] and the European Le Mans Series. The prototype made its debut at the 2017 4 Hours of Silverstone.

Dallara P217
CategoryLe Mans Prototype LMP2
ConstructorDallara
Technical specifications
ChassisCarbon-fibre monocoque with aluminium honeycomb and Zylon side panels
Length4745mm
Width1900
Wheelbase3010mm
EngineGibson GK-428 4.2 litre V8
Cadillac LS 5.5 litre V8
TransmissionXtrac P1159F 6-speed sequential semi-automatic paddle shift
Weight930kg
FuelVarious
LubricantsVarious
BrakesBrembo Carbon Disks
TyresMichelin, Dunlop, Continental ExtremeContact (DPi-V.R)
Competition history
Debut2017 24 Hours at Daytona
RacesWins
3213
Constructors' Championships2 (2017-2018 IMSA WeatherTech Sportscar Championship, Prototype) (DPi-V.R)
Drivers' Championships2 (2017-2018 IMSA WeatherTech Sportscar Championship) (DPi-V.R)

DevelopmentEdit

The car is a result of the bid made by Dallara, for one of the four licenses to build the new for 2017 Le Mans Prototype 2 cars. It is also the first LMP constructed by Dallara since the original R18 TDI.[2] The car was first spotted testing at the Autodromo Riccardo Paletti in Northern Italy in late early October, by the Italian magazine Autosprint.[3] The car was subsequently fitted with a Evo kit, for the 2018 racing season, to resolve issues with the car, with a new splitter for the Standard High Downforce Aero package, and a revised Le Mans Low Drag Kit.[4]

Cadillac DPi-V.REdit

 
Action Express Racing's Mustang Sampling Racing Cadillac DPi- V.R. at the Petit Le Mans.

A Daytona Prototype International variant of the car, has been developed in partnership with GM, Cadillac, as well as Wayne Taylor Racing. It was unveiled on the 30th of November, and is successor to the successful Corvette DP that was fielded in the Grand-Am Rolex Sports Car Series, as well as the IMSA WeatherTech Sportscar Championship.[5] It is powered by a LS based GM small-block engine, originally a 6.2L V8 built by Richard Childress Racing, mated to a 6 Speed XTRAC transmission, producing 600 hp.[6][7] In this guise, the car was extremely dominant, with the car winning on its debut at the 2017 Rolex 24 at Daytona, where Wayne Taylor racing led a 1-2 with Action Express Racing, while also winning 8 of the 10 races in the calendar. In 2018, the displacement of the LS engine was changed 5.5L, again built by Richard Childress Racing and producing 580 hp, following a series of BoP adjustments to slow down the car the previous season, that had made the car hard to drive, most notably a tall first and second gear mandated after the low-end torque became an advantage against the turbocharged four and six cylinder engines.[8]

ReferencesEdit

  1. ^ "Racing Team Nederland Steps Up to WEC – Sportscar365". Retrieved 2018-12-04.
  2. ^ "Dallara P217 - Racecar Engineering". Racecar Engineering. Retrieved 2018-12-04.
  3. ^ "Dallara LMP2 Car Breaks Cover – Sportscar365". Retrieved 2018-12-04.
  4. ^ "Dallara Details LMP2 Evo Kit Updates – Sportscar365". Retrieved 2018-12-04.
  5. ^ "Cadillac DPi-V.R Unveiled – Sportscar365". Retrieved 2018-12-04.
  6. ^ "Dallara P217 - Racecar Engineering". Racecar Engineering. Retrieved 2018-12-04.
  7. ^ "Cadillac Pressroom - United States - DPi-V.R race car". media.gm.com. Retrieved 2018-12-04.
  8. ^ "Cadillac DPi teams to race with smaller engine". RACER. 2018-01-04. Retrieved 2018-12-04.