It's Alive!
Well...mostly. Turns out I was still missing a couple things I forgot about. So...re-configured the inside of the case and re-ran the tubing:
420mm radiator is now in the front of the chassis. I took out the rear intake fan. I may put an exhaust fan there at some point, but for now I've just left it so the case will be positive pressure. I have not fully tidied up the wiring yet. The USB front panel cable currently goes through a little hole in the frame that doesn't move with the motherboard tray and the 24-pin cable also would then interfere if I moved the motherboard tray up at all, so it remains where it was before even though as expected there is a lot more room under the GPU AIO than there was when the 420mm rad was up there.
With the radiator...it's very tall:
A look at my quick disconnects and drain valve's new location:
I have the 45° swivel joints that used to come out of the reservoir on the back of the case as that makes moving those tubes around and draining the loop easier. The 2nd pump isn't hooked up so I didn't tidy up these wires either...I'll get to that later.
Up and running:
I had a little leak in the back when I first turned the pump on. I had done leak testing upstairs when I cleaned and flushed everything, then I disconnected the tubes between the MO-RA and case and brought it all down to my desk...started putting the Koolance fluid in and I had dripping out of the drain-valve. Turns out it had just loosened up somewhere in the process, so I snugged that up nice and no more leaks...pheew. I hadn't taken the paper towels away yet for this picture, so I'll have to take some more after I do some cable management and put it the rest of the way back together.
I've ordered 2 Be Quiet! Silent Wings 4 Pro 120mm fans for on top of the EVGA hybrid radiator. I've modified the top of the case to open up more airflow out of the vents, but every little bit helps up there. I also have a bit of a temporary solution up top where the rest of the radiator-mounting area is wide open where I just taped off the whole opening (I had a plastic piece that normally mounts to the power supply shroud if you don't have a fan there, which I do, and that is taking up the most visually obvious space, but the area right over the 420mm radiator still just has visible masking tape). I might just get some gaff tape or black masking tape to cover it so it looks nice. The idea is that the GPU radiator moves all that heat upwards...but if the cavity it's exhausting to is wide open to the rest of the case, it will just circulate back into the case. So it's better to just get some good pressure fans on the radiator and seal off that compartment so the air has to leave the top of the case through all the vents up there.
I was also short one molex splitter for the pumps and an extra male-to-male 4-pin PWM fan extension cable. This needs to go from the pump header on the motherboard to a little 4-port hub that I put on the back of the radiator (under the pumps) that will drive the PWM signal to both pumps and return one of the tach sensors. Currently I've just been running one of the pumps. I tested the other one to make sure it works, but I noticed that it doesn't do a great job moving the fluid with just the pump in the bottom pump-top. I don't know if something about this orientation of tubing causes it not to generate proper head pressure or something, but it seemed like it couldn't pull very well on its own, unlike the pump under the reservoir, which was moving so much water that it was creating a vortex in the reservoir, even though it has the block in there that's supposed to stop that.
Whenever I do leak testing or filling of the loop, I use a little cheap 30W 12VDC power supply that I put a molex connector and a switch on the output of so that the computer's PSU and all components are not powered. There are some pictures of that in the Dark Water thread if you want to see it. So it has no PWM control and it's full 12V for filling the loop. I just switch it on and off as I go if I can't keep up with filling the thing.
So that's mostly built. I'll do some more tidying and clean-up, then post a couple more pictures when it looks nicer.