Jackson Walls’ damaged Holden ZB Commodore.
The Triple Eight Race Engineering driver went off between Turn 13 and Turn 14 on his fourth lap of the Adelaide Parklands Circuit after a shock failed entering the right-hander.
The driver of the #11 Holden ZB Commodore was uninjured and the team is assessing whether the car is repairable.
“Something failed,” Walls told Supercars.com.
“Not really sure what happened. It’s pretty annoying. But, we’ll investigate, we’ll figure out what went wrong.
“Hopefully we can get it out for the rest of the weekend, but we’ll have to wait and see.”
The crash brought out the red flag and reduced proceedings by roughly 10 minutes.
Walls entered the final round of the Super2 Series as the leading rookie, ahead of teammate Ben Gomersall and Cody Burcher.
Walls is fifth overall and the top Holden driver this season behind the dominant Tickford Race quartet of Rylan Gray, Lochie Dalton, Nash Morris, and Reuben Goodall.
Gray was quickest in the first practice session with a 1:20.9265s in his Ford Mustang, leading stablemate Goodall.
Jordyn Sinni was third while Cameron McLeod and Brad Vaughan set the exact same time to share fourth.
NASCAR Xfinity Series winner Jesse Love was 22nd and 2.4 seconds off the pace of Gray.
Practice 2 for the Dunlop Super2 Series takes place on Thursday afternoon at 2pm ACDT.
Results: Dunlop Super2 Series BP Adelaide Grand Final, Practice 1
Pos
Num
Driver
Team
Car
Lap
Diff
Gap
1
55
Rylan Gray
Tickford Racing
Ford Mustang GT
1:20.9265
2
5
Reuben Goodall
Tickford Racing
Ford Mustang GT
1:21.0235
0.0970
0.0970
3
54
Jordyn Sinni
Eggleston Motorsport
Holden Commodore ZB
1:21.1208
0.1943
0.0973
4
92
Cameron McLeod
Kelly Racing
Ford Mustang GT
1:21.1545
0.2280
0.0337
5
80
Brad Vaughan
Brad Jones Racing
Holden Commodore ZB
1:21.1545
0.2280
0.000
6
35
Ben Gomersall
Triple Eight Race Engineering
Holden Commodore ZB
1:21.1812
0.2547
0.0267
7
6
Lochie Dalton
Tickford Racing
Ford Mustang GT
1:21.3540
0.4275
0.1728
8
99
Jobe Stewart
Image Racing
Holden Commodore ZB
1:21.4217
0.4952
0.0677
9
25
Matt Hillyer
Walkinshaw Andretti United
Holden Commodore ZB
1:21.4697
0.5432
0.0480
10
1
Zach Bates
Eggleston Motorsport
Holden Commodore ZB
1:21.5069
0.5804
0.0372
11
118
Jarrod Hughes
Image Racing
Holden Commodore ZB
1:21.5203
0.5938
0.0134
12
222
Nash Morris
Tickford Racing
Ford Mustang GT
1:21.6734
0.7469
0.1531
13
36
Cody Burcher
Eggleston Motorsport
Holden Commodore ZB
1:21.6951
0.7686
0.0217
14
2
Campbell Logan
Walkinshaw Andretti United
Holden Commodore ZB
1:21.8132
0.8867
0.1181
15
53
Max Geoghegan
Kelly Racing
Holden Commodore ZB
1:21.8937
0.9672
0.0805
16
9
Cody Gillis
Brad Jones Racing
Holden Commodore ZB
1:22.0231
1.0966
0.1294
17
38
Elliott Cleary
Eggleston Motorsport
Holden Commodore ZB
1:22.1891
1.2626
0.1660
18
33
Bailey Sweeny
Blanchard Racing Team
Ford Mustang GT
1:22.5099
1.5834
0.3208
19
28
Ayrton Hodson
Anderson Motorsport
Ford Mustang GT
1:22.5635
1.6370
0.0536
20
88
Bradi Owen
Eggleston Motorsport
Holden Commodore ZB
1:22.8633
1.9368
0.2998
21
17
Ryan Tomsett
Anderson Motorsport
Ford Mustang GT
1:22.8703
1.9438
0.007
22
57
Jesse Love
Image Racing
Holden Commodore ZB
1:23.4004
2.4739
0.5301
23
11
Jackson Walls
Triple Eight Race Engineering
Holden Commodore ZB
1:24.3140
3.3875
0.9136