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IMSA Releases 2017 Technical Regulations

IMSA releases 2017 WeatherTech Championship tech regulations…

Photo: John Dagys

Photo: John Dagys

IMSA today released technical regulations for all four classes heading into next year’s WeatherTech SportsCar Championshp, which opens with next month’s Rolex 24 at Daytona.

The Prototype class will see a major technical shift in 2017, as two different types of race cars, DPi and LMP2 are introduced and will compete together for overall race victories.

All Prototype cars, regardless of type, will use chassis built by one of four chassis constructors approved by IMSA, FIA and the ACO: Dallara, Multimatic Riley, Onroak Automotive (Ligier) and ORECA.

The technical differences between LMP2 and DPi are in the engines and bodywork. LMP2 cars will use constructor-specific bodywork and “spec” Gibson V8 engines. DPi cars are manufacturer-based, and require brand-specific bodywork and engines.

DPi manufacturers for 2017 include Cadillac, Mazda and Nissan, with additional manufacturers showing strong interest in future participation.

All LMP2 cars will compete in the WeatherTech Championship as homologated by the ACO/FIA. In contrast, DPi cars are homologated by IMSA.

As part of the IMSA homologation process, DPi manufacturers/constructors may select an alternative specification for certain components such as brakes, shocks and wheels.

Once declared and approved by IMSA, these alternative components – referenced in the IMSA Technical Regulations – become part of the overall homologation specification and required for use by each individual manufacturer-branded DPi car model.

The DPi homologation process is scheduled to be completed prior to the Roar Before the Rolex 24 test on Jan. 6-8, 2017.

The GT Le Mans and GT Daytona classes utilize homologations and technical regulations established by the ACO and FIA, respectively.

The Prototype Challenge class – which embarks on its final WeatherTech Championship season in 2017 – will continue to use the same IMSA Technical Regulations as in past seasons.

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7 Comments

7 Comments

  1. Not Nick

    December 16, 2016 at 7:51 pm

    Are teams required to have Conti stickers? Because they are ugly

    • Manuel The Elf

      December 17, 2016 at 12:12 am

      It could be worse. They could be Hoosier stickers.

      At least someone keeps investing in the series. So we can complain about the cars on track. ??

  2. WBrowning

    December 16, 2016 at 11:30 pm

    Yes they are and yes they are!

  3. Andrew

    December 17, 2016 at 6:46 am

    Is this part of why the Cadillacs were running two brake systems and testing before confirming which to run with? I know Brembo had a hell of a time with LMP2 brakes in the WEC this season but AP (part of Brembo family) seemed to be the new spec of choice and Indy cars have dropped them for Carbon Industries (I think).

    “As part of the IMSA homologation process, DPi manufacturers/constructors may select an alternative specification for certain components such as brakes, shocks and wheels.

    Once declared and approved by IMSA, these alternative components – referenced in the IMSA Technical Regulations – become part of the overall homologation specification and required for use by each individual manufacturer-branded DPi car model.”

  4. seth

    December 17, 2016 at 7:49 pm

    PC car count in 2017 as low as 1

    • The Ghost of Buckshot Jones

      December 19, 2016 at 10:14 am

      A lame duck class has low turnout. Alert the presses.

  5. Doug

    December 19, 2016 at 3:48 pm

    Say what you want about the LMPC class. It had it’s need and day. It’s past now.

    That being said, the SOUND of the LMPC with that corvette engine was always and is cool.

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