Originally Posted by stimr2
There really isn't much room. You probably could install a rad but not a thick one like the XSPC RX240. Also you might not be able to install the rad w/fans in the case. The memory modules and mosfet heatsinks would also restrict the amount of space you have. Another thing you would have to do is drill out new holes to mount the rad. Because the the 120mm fan holes won't line up with any radiator. 4 of the holes will, not the rest. Another thing you could do is drill new holes for the radiator closer to the left side panel. It would give you more clearance for the motherboard and memory.
The reason I replaced my R3 with the Arc Midi was because you couldn't fit a loop internally without modifications.
Here's some pics from my old rig in the R3. So you can see just how much space there is.
I am trying to squeeze a custom loop into the R3 atm and as Stimr2 said it is very tight. The only other way of mounting a 240 internally apart from what Stimr2 mentioned that i could think of was if you used the Scythe 120mm x 12mm fans, even then you would only have around 1/2-1mm to spare. Didnt get to test that theory though as i could not find any supplier that had the fans in stock so have gone the external route.
I did hope to complete it this weekend but am still waiting on some fittings, I spent around 9 hours yesterday just fitting a 120mm rad in front and a pump/res in the botttom. Will post some pics when done.
Squeezing things into the R3 is more fun than a Rubics cube, the you come to the cable management and the fun ends
hth'sEdited by Krahe - 9/24/11 at 3:28pm