The 32-year-old has not enjoyed the best of starts since joining from Blackburn, although Sydney have been doing well in the A-League, and are currently second after a four-game unbeaten run.
Buoyed by consecutive appearances for Australia against Oman and Thailand in the past week, Emerton insists he is now ready to make an impact for Sydney, admitting he took some time to get used to life at his new club.
"It has taken me time to settle in but I think the last few games I've started to feel more myself and am making a much better contribution," Emerton told The Age.
"Physically I feel good and mentally I'm settled back here in Sydney.
"I think there's much better things to come from me and I'm feeling good at the moment."
Central Coast are currently fifth in the A-League after going unbeaten in their past three matches, but Emerton insists Sydney will be going all out for the win on Saturday, and wants his team-mates make full use of their home advantage.
"We want to go out there and win the game tomorrow [Saturday]," Emerton added.
"If we don't continue to build on what we've done so far, it'll be a waste of time for us.
"We need to make our home ground a fortress and we need to start winning games there because we've been doing exceptionally well away from home."
Emerton picked up his 91st cap for Australia against Thailand on Tuesday, and is now only behind goalkeeper Mark Schwarzer in the list of most-capped Socceroos.