[2][3] Shane Parker from Adelaide was second (and the only rider who defeated Adams on the night) with Queensland's Mark Carlson in third place.
Jason Lyons, also from Mildura defeated former champion Glenn Doyle and Queensland's Tony Langdon in a run-off for fourth place to grab the last Australian qualifying spot in the 1992 Commonwealth final in England.
He also became the first rider to win the Under-21 and senior championships in the same season, a feat not repeated until Chris Holder from Sydney did so in 2008.
During Heat 3 of the meeting, Todd Wiltshire from New South Wales, who had placed 3rd in the 1990 World Final in England, fell in the second last turn after a race long battle for the lead with Victorian Jason Lyons.
As Lyons dived under him for the lead, Wiltshire fell and along with his bike crashed into the safety fence, suffering terrible back injuries and multiple fractures of the Pelvis.