24 hours - you owe it to the rest of the computer. Although yeah, the few times I've had a leak, I knew it within about 15 minutes. Don't let the radiator fans run, you might manage to raise the fluid temps a degree or two from the pump heat dump. Never hurts, I figure.
I agree on the leak with in the first fifteen minutes, I had a leak within 5 minutes because I had modded a dual bay res and drilled in a second hole for inlet because of my stinger block had two outlets and I wanted to avoid any restriction of the flow.
after I drilled and taped the hole I had messed up the firt three threads so I filled them in with some epoxy and retaped. well during the first few minutes that is where my leak was so I went and grabbed my form a gasket put it around the screws and let it dry for a little bit, screwed it back in waited for about another 2 hrs then starting the testing. no leaks so far. , I started to get a little ansi this morning because I wanted to fire up my computer but decided that I would just recheck every thing and discovered that I mixed up the inlet and outlet off of the pump, this happened because I mounted the pump side ways . I have since been doing some wire management and its hard to do all of those with no room ( my bedroom is tiny about 25' square floor space to work on) and my back being just messed .
I try to leak test when I have work to do... I can sit on my laptop while the machine runs next to me, that way I can be present and keep an eye on things. So I usually test over the course of several days, about 12 hours total.
Something about sleeping while my rig *might* be taking a swim doesn't sit well with me. :shok:
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