Such a shame, that loop is lovely looking.
From the research I was doing a while ago, crossflow radiators aren't as good simply because the coolant isn't in the radiator for as long as a normal radiator. From what I gather, the flow goes in, gets split between the 2 internal pipes and then combines before exiting. Normal rads have a "U" shape thing going on so the coolant gets double exposure to air flow.
Looking at your proposed changes though, I think you'd struggle getting a 240 in the front with the 360 as I don't think you can drop it down to where you indicate and still have 2 fans on it - is there an intake that far down?
And to be honest, even with a crossflow rad I'm surprised your coolant temp is as high as it is. I'm not sure that just upping the rad thickness will help enough on its own. Can you turn your pump up a bit to see if that helps? Bump the fans up a bit too?
It is a bit annoying after spending all that time planning to get a decent looking loop, but oh well, live & learn and avoid thin crossflows!
That's pretty much the same as I read, but also read people saying they used them and their temps were hardly any different to using a 'normal' rad... Guess it's the same as anything, should have listened to the pro's and not random opinions
Yeah a 240mm will definitely fit in the front with the top of the rad exactly where it is now, there's another 120mm fan below where the rad is atm and the front will easily take a 360mm. All you have to do is remove the small cover under the current radiator and slide out the 2 HDD brackets
The coolant usually peaks at around the high 30's - 40°C when playing demanding games, but for some reason the wet weather effects in Project Cars seem to absolutely hammer the GPU and put an extra few degrees on it within a couple of minutes. Unfortunately I've already got the fans making more noise than I'd like, with the front rad, intake and top rad fans running at 90%+ most of the time. Pump is currently on 35% which was more of a guess of what was needed than scientific! Thought as most ran the Vario on a setting of around 2/5 then 35% should be OK
Also worth checking the temp probes for accuracy. I've just replaced a Phyobia G1/4 temp probe as it was either off or a different spec to the Aquaero probes. Difference increased as things got hotter with two others reading around 35 when this one read 40. The new one is much closed but the three (res, flow and pump) still aren't within a degree.
Ah, that's not a bad shout! guess I'll need to get some boiling water and dip the end in while I have the PC running... *goes looking for leftover plug to fill the hole* It's an XSPC temperature probe, not sure what sort of reputation they've got but will test it when I get 10 minutes