Despite running without telemetry and other electrical issues due to a last minute software update from Cosworth, the #31 Action Express Racing Cadillac DPi-V.R of Dane Cameron, Eric Curran, Mike Conway and Seb Morris set an unofficial best lap of 1:38.766 as the day drew to a close. 

The software issue affected all of the Cadillac DPi prototypes and both the #31 and the #10 Wayne Taylor Racing Cadillac didn’t start the morning session, and set only a total of 19 and 20 laps, respectively if the afternoon.

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Photo: Marshall Pruett

Action Express did manage to get the #5 Cadillac running from the late morning through the rest of the day, completing 56 laps with Joao Barbosa, Christian Fittipaldi and Filipe Albuquerque at the wheel.

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Photo: Marshall Pruett

The two Riley-based prototypes from Mazda (DPi) and VisitFlorida Racing (LMP2) also faced teething problems lapping around two seconds slower than the Cadillacs; the VisitFlorida Racing prototype setting a best lap of 1:40.714, while the Mazda clocked in a 1:41.117 from the morning’s session.

Corvette Racing topped the timing sheet in the GT Le Mans class, with a 1:45.442 lap set by the #3 car. In the GT Daytona class the #27 Lamborghini Huracan GT3 of Dream Racing set the pace with a 1:45.957.

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Photo: Marshall Pruett
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Photo: Marshall Pruett

Three mid-engined 911 RSRs from Porsche North America were on-site, but only two are testing. This week is the first time publicly that Laurens Vanthoor, fresh off last weekend’s Sepang 12 Hours, will be seen at the wheel of the 911. 

Ford Chip Ganassi Racing’s four full-season drivers from this year’s IMSA rounds have been retained for 2017 with Ryan Briscoe, Richard Westbrook, Dirk Mueller and Joey Hand taking part in the test. 

All Images: Marshall Pruett, Racer.com