After eight games the Hammers sit in sixth place in the Premier League on 14 points ahead of their trip to fellow strong starters Palace who are fourth on 15 points.
Both sides have impressed fans and pundits alike with their attacking verve so far this season and it is set up to be an entertaining clash.
Slaven Bilic and Alan Pardew lock horns knowing a win for their respective sides at Selhurst Park could see them rise as high as second.
Break has helped key new man settle in
But Terzic says despite losing a number of players to their national sides for the last two weeks it has actually done the Hammers a big favour by allowing some key squad integration for the club's newest recruit, assistant manager Nikola Jurcevic.
“We’ve started with a lot of ups and downs,” Terzic told whufc.com.
"During the break, we have got more time to talk to the players who are not with their national teams and we can do more individual work, so it’s definitely helped us."
One man it has helped inparticular is Jurevic, who has had time to get to know his new colleagues, players and surroundings.
It is an appointment Terzic, who worked with Bilic's new assistant at Besiktas, feels will benefit the club immensely.
He added: "He is definitely bringing his experience, because he played and managed at the top level and he definitely has great experience.
“Nikola is very good and close with the players and is good for us on a daily basis."
A testing time for club managers
International breaks are always a testing time for club managers.
Left with a skeleton squad of players not representing their countries it is often difficult to do anything meaningful at the training ground.
Meanwhile, some of your key players jet off all over the world and risk injury playing for their countries often in high pressure games.
The Premier League season always struggles to get into a rhythm until after the final competitive break of the year in October.
And that is the case this year with one of the most open starts to a season in recent memory.
But this time around Terzic and West Ham were grateful for some breathing space and will now go again to see just how far they can take the East Londoners in their final season at the Boleyn Ground.
West Ham go into the game off the back of a 2-2 draw at Sunderland having been 2-0 down after 21 minutes while the Eagles beat West Bromich Albion 2-0 last time out.