RUGBY UNION: Noosa's relishing a stunning winning run but faces its toughest test of the season so far.

The Dolphins will collide with Caloundra at Lighthouse Park on Saturday (3.30pm) in a top-of-the-table clash of Sunshine Coast Rugby Union's A-grade season.

Michael Phelan's charges have won five games straight to start their campaign, following on from the side's flawless 18-match run to last year's premiership.

But he's wary of this fixture and a desperate Lighthouses unit.

"The last couple of years they've really built up a good force so if the (Noosa) boys aren't on top of their game it's going to be a really hard day at the office," he said. "But I know our fellas are pretty keen for it."

Noosa beat Caloundra 27-13 at Sunshine Beach last month but Phelan expects a tougher proposition this time around

"They're very good at home...and and they're pretty focused on home," he said of his opponents.

"They like to put on a big performances in front of their home crowds so it's going to be a real challenge for the boys."

He said his side's under no pressure to continue its winning streak.

"It never gets mentioned. I really don't think it would shatter them when it ends, as long as they're playing footy and enjoying it then they're happy."

"A couple of the older guys (at the club) were pretty happy when Maroochydore played so well against us a couple of weeks ago and were improving.

"All the boys want is a strong comp."

The sides collide at 3.30pm. In the other game in the four-team premiership, Maroochydore hosts University.