Originally Posted by tatted_taz
I just got my Swiftech MCR 220 Rad, and from the diagrams, it shows this beast mounted with the barbs on top. Now the question is ..can I flip it and have the barb on the bottom so I can run my lines thru a expansion slot or is it better to drill the holes and run them from the top??
I'm not an expert, but I'll take a shot at it, and others can take a shot at my answers.
Many people mount them barbs-down, the only issue that I can think of being getting the bubbles out.
I believe some ThermoChill rads are designed to be mounted barbs down, with a bleed valve on top, so the valve can be opened, and the radiator filled till fluid reaches the valve--close the valve, bubbles gone.
If you mount it barbs down, and it doesn't have a bleed valve, I suggest making sure that you can tilt it barbs up when filled to get all the air out--maybe leave the mounting bolts loose so you can take it out and wiggle it around, tap it, etc.
I had the same issue with my pump, which is mounted barbs-to-the-side. It made noise until I unmounted it and turned it barbs up with the power off and tapped it--then air came out. Restarted, and blessed silence.
Hope this helps! Where's my rep!