Originally Posted by Vagrant Storm
Oh you're push/pulling
Then I'd still put the fans on first, but on the top side you use short screws so they only go through one side of the fan and into the radiator(use a small screw driver to tighten them). Then you use case fan screws connect the other side of the fan to the case and hold it all in there.
You could mount them like that if you have short screws and if your fans have open sides instead of tunnels for the screws like some fans have
I think the EK rads now come with a set of 30mm for one side and a set of 35mm for the other. Attach the fans to the bottom side of the rad first with the 30mm screws. You might be able to use the 35mm screws for the top if you use washers, but it would be close, and you sure don't want to risk puncturing your rad. Personally I would just buy some more 30mm M3 screws
for the top.
After putting on the bottom fans, I'd set the rad on a table and line the fans up for the top and hand thread at least 2 screws per fan just a tiny bit (just a couple turns each - don't try to screw them down all the way) just to make sure the fans are lined up right on the rad, and then secure all of the fans on what will be the front side of the rad - the side you can see once installed - with a strip of painter's tape (the blue stuff that will remove easily without leaving a residue). Remove the screws you had hand tightened, put one of them through one of the end the mounting holes in the top of the case and keep a couple of the others within reach, then lift the rad up into position making sure that screw you had put through the case makes it into the appropriate fan hole so you can get it down into the rad and get a few turns on it. Then go to the opposing other end of the rad and drop a screw down in the appropriate fan hole and get a couple turns on it. After that it should be easy-peasy. Just don't tighten any of the screws up all the way until you have them all started in the rad threads.