Tom Blomqvist kept Acura atop the time sheets at the Roar Before the Rolex 24, with the Meyer Shank Racing driver putting in a late flyer to go quickest in the second session of the day.
The Englishman reeled off a best time of 1:34.351 in the No. 60 Acura ARX-05 to edge out Friday morning’s pace-setting No. 10 Wayne Taylor Racing Acura DPi of Filipe Albuquerque by 0.336 seconds.
The pair of Chip Ganassi Racing Cadillac DPi-V.Rs were third and fourth, led by the No. 01 entry of reigning NTT IndyCar Series champion Alex Palou, who slotted in ahead of Earl Bamber in fourth.
Tristan Vautier completed the top five in the No. 5 JDC-Miller Motorsports Cadillac.
Lamborghini topped the time sheets among the GTD cars, with the GTD Pro class No. 63 TR3 Racing Lamborghini Huracan GT3 Evo of Mirko Bortolotti going quickest.
The Lamborghini factory driver’s 1:46.516 lap edged out the GTD pace-setting No. 75 SunEnergy1 Racing Mercedes-AMG GT3 Evo of Raffaele Marciello by 0.096 seconds.
A 1:46.483 lap time in the first session by Jan Heylen in the GTD class No. 16 Wright Motorsports Porsche 911 GT3 R, however, ended up quickest on the day out in the production-based ranks.
Rene Rast edged out Fabio Scherer to put the No. 68 G-Drive Racing by APR Oreca 07 Gibson on top of the time charts in LMP2 while the No. 33 Sean Creech Motorsports Ligier JS P3 Nissan of Malthe Jakobsen led the way in LMP3.
The afternoon session, which ended in dusk conditions, saw two red flags, both for Muehlner Motorsport Duqueine D08 Nissans that stopped on the track.
The first was for the No. 26 entry of Charles Crews, followed by a stoppage for the sister No. 7 Duqueine of Antoine Doquin.
The next session is scheduled for 10 a.m. ET on Saturday, followed by qualifying in the afternoon for Sunday’s 100-minute qualifying race that will set the grid for the Rolex 24.
RESULTS: Session 2