More Four-Wheel Frustration for Stoner

For Casey Stoner, it seems double the wheels means double the frustration.

The 27-year old endured another difficult day in Perth on Saturday in just his third race in a V8 car since switching to the category following a glittering MotoGP career.

Starting from a creditable 10th on the grid, Stoner was barged off the tight 2.42km Barbagallo track on the opening lap of the Dunlop Development Series race and came home in 21st position, over 12 seconds behind winner Ashley Walsh.

Stoner said in the lead-up to the event he was just trying to enjoy the experience and was "not really worried about results".

But it was clear on Saturday the two-time MotoGP champion, who used to being a pacesetter on the track, is irritated by having few chances to overtake in his relatively bulky V8 compared to being on two wheels.

"To be honest I wanted to have fun at the front of the pack," said Stoner, whose frustration was compounded by the timesheets showing he clocked the eighth fastest lap time during the race.

"I was a little bit disappointed in a couple of the drivers that were blocking a little bit too much.

"And it made it impossible to overtake.

"Without that we could've moved through quite a lot further. But with only a few laps and a short track it's a bit tricky."

Under the second-tier race rules, Stoner will start from 21st on the grid for Sunday's race and he's far from upbeat about his chances of scything through the field over 25 laps.

"I think today we had a chance at possibly being top eight and putting us in a better position for the next race," he said.

"But starting so far back now is going to be, again, just trying to avoid the wreckage.

"I'm sick of having to come through and people maybe fighting a little bit too hard in those early laps for positions when it is more sensible in later laps."

Stoner's V8 debut at Adelaide's Clipsal 500 in March ended with a crash due to a dodgy front tyre, but he fought back from last on the grid in the second race for a respectable 14th-place finish.