Bathurst 1000 crash drivers in critical condition

Holden's Mark Porter and Ford's David Clark have both been taken to hospital after a heavy crash in the Fujitsu V8 Supercar series race.

Ambulance crews and paramedics attended to both Porter and Clark at the track for over an hour, the NRMA Careflight helicopter departing the track a short time ago.

He was scheduled to also contest the main Bathurst 1000 race for the sixth time this weekend in the Team BOC Falcon shared with Dale Brede.

Western Australian born Clark, 26, lives in Adelaide and is married with three children.

The accident occured on lap 12 of 14 of today's Fujitsu series race.

Porter spun sideways near Reid park on the climb up the mountain, stalled and was left stranded in the middle of the track in an area blinded to oncoming traffic.

Chris Alajajian put his car sideways and ripped the rear of both his and Porter's car.

Then Clark, who also put his Falcon sideways in an attempt to escape collision, crashed directly into the driver's side door of Porter on his driver's side.

Police closed the circuit immediately following the accident.

Racing resumed after an hour delay with the Bathurst 1000 qualifying session.

AAP