Looking forward to seeing your WC build log.
Not sure if it's been mentioned during your discussions on building loops in small cases.... one of the biggest things I've run into is the absolute necessity to ensure that you're not applying undue pressure on swivel barbs when you're trying to get the tube onto them. Sometimes in tight spaces it's hard to get the tube onto the barb, and the easiest way to get it on is to muscle it on without thought of how much pressure you're putting onto the joint. If possible, use straight barbs in tight spaces, or be very careful about putting extra pressure on the joint.
(I personally enjoy the challenge of building a loop in a small space... where's the challenge in building a loop in a case the size of a costco warehouse???? )
Couple of more tips when working in tight corners trying to install flex tubing without applying "pressure on an angle to rotary fittings".....
- installing tubing to the fitting prior to installing the radiator into the case (leave the tubing a tad longer and cut it to fit afterwards).
- Get your kettle boiling...pour the water into a large bowl....soak the ends (or the entire length of tubing) in the bowl of hot water for 30 sec or so....it wil soften the tubing and the ends will slip over the barbs a lot easier.
- Have a good "tube cutter" that will ensure a nice straight perpendicular cut with no jaggies...I think Daz used to sell them....got mine at Home Depot...
- For leak testing I use one of these I also got from Daz about 6 yrs ago...
If you have a PWM pump I see Daz also has PWM to Molex converters to run your pump directly off of PSU