Burnley gained home advantage as they continue to chase two cup competitions following an entertaining stalemate at Loftus Road.
The Clarets came closest to breaking the deadlock against their Championship rivals when Wade Elliott thumped the crossbar in the first half.
And as they geared-up for the Carling Cup semi final showdown with Spurs in midweek, a replay was the very least Owen Coyle's side deserved from London in the latest instalment of 'capital punishment'.

Christian Kalvenes featured for the first time in over two months as injury and suspension forced Coyle to shuffle his pack.
Wade Elliott switched to central midfield following injuries to Kevin McDonald and Chris McCann and Steven Thompson started in attack, with only six substitutes named.
Burnley made a bright start and earned their first corner in the fourth minute, which ultimately came to nothing.
Damion Stewart somehow avoided a booking in the 12th minute when he unceremoniously upended Chris Eagles as the Clarets cut through the middle of the Rangers defence.
Given some of the cards Burnley have 'earned' recently, it was a ridiculous decision by referee Tony Bates.
Little had been seen from Rangers in attack, but in the 20th minute Di Carmine beat the offside trap down the left and cut back inside onto his favoured right foot to force Brian Jensen into a fine, low save.
But the Clarets came closest to opening the scoring minutes later.
The visitors' third corner was only half cleared and Elliott watched the ball drop before volleying a vicious drive off the face of crossbar from 25 yards.
Eagles and Elliott then combined well and the latter cut cleverly to the by-line, only to see his dink into the danger area hacked clear by a backtracking defence.
And as the half ended with Burnley continuing on the offensive, Coyle would certainly have been the happier of the two managers.
There was more intent from the hosts as the second half began, with sub Emmanuel Ledesma looking lively and just failing to find the target from 18 yards.
But in the 64th minute, Eagles might have opened the scoring for the Clarets as he broke from midfield.
Unfortunately the touch to take him clear of the last defender was just too heavy and as he tried to retrieve the situation by rounding Cerny, he was just forced too wide and could only find the side netting at full stretch.

Thompson fired over following more god work by the tireless Eagles as the game reached the three-quarter mark still hanging in the balance.
Alan Mahon, the match winner in the league meeting at Loftus Road a matter of weeks ago, replaced Robbie Blake for the final 17 minutes.
And as the replay loomed the Republic of Ireland ace was inches away from winning it with a swing of the left foot. that flew over the angle.
Burnley: Jensen, Alexander, Duff, Carlisle, Kalvenes, Eagles, Elliott, Gudjonsson, Blake (Mahon 73), Thompson (Rodriguez 86), Paterson.
Subs: Kay, A MacDonald, Penny, Akinbiyi
QPR: Cerny, Delaney, Stewart, Mahon (Ephraim 62), Leigertwood, Blackstock, Gorkss, Rowlands, Ramage, Cook (Ledesma 46), Di Carmine (Agyemang 73).
Subs: Cole, Connolly, Alberti, Oastler
Ref: A Bates
Att: 8,896












