SHANE van Gisbergen and Tim Slade are spectators for Practice 2 at Albert Park after crashes in the opening session.
Neither Camaro could be fixed in time for the second outing of the day after separate incidents this morning.
Red Bull Ampol Racing hopes to have van Gisbergen back on track for qualifying, while PremiAir is aiming for Race 1.
Slade’s Turn 5 hit was the more severe of the two, leaving the customer Triple Eight team with a lot of work to do.
“We’ve got to a point now where we’ve stripped the car and assessed the severity of the damage,” explained PremiAir team manager Matt Cook.
“It’s quite bad but it’s not as bad as what we initially thought.
“The rear clip was the biggest point of concern, we’re repairing that now and in the next 10 or 15 minutes it’ll start to go back together.
“As long as it’s safe that’s the biggest thing first.”
Repairs at PremiAir are being undertaken with the help of a fabricator loaned to the team from Grove Racing.
Having only run on the Hard tyres in Practice 1, van Gisbergen will have to rely on teammate Broc Feeney’s feedback on the Super Soft tyre.
This afternoon’s qualifying sessions are split, with the Race 1 grid to be set on Hard tyres and the Race 2 qualifying on Super Soft.
“I’ll have to look at his onboard after to see what he’s learnt, what Marty (engineer) and him have worked through,” said van Gisbergen.
“It’s a shame I’ve missed that, the Super Soft running, but it is what it is.”
Two qualifying sessions follow Practice 2 ahead of the opening race of the weekend this evening.
