Cooling Reservoir

The XSPC aluminum reservoirs were selected after testing a few different setups. I had thought about using two flat aluminum panels or a triple 120mm radiator but after testing the reservoirs seemed the best solution. Using a wall mounted triple radiator gave lower temperatures but it meant the 360 would have to be kept in one place.

To test the reservoirs were upto the job the xbox was left running for around 5 hours. During that time I ran movies and games over the 5 hours the CPU temp peaked at just under 60C. The temp peaked while playing the fight night demo from marketplace.

Each tube going to the reservoirs was split using a T piece. The flow was split between the reservoirs to evenly distribute the heat.

Inside each reservoir is a tube to return the hot water to the top of the reservoir. The second reservoir needed to be modified internally to swap the inlet and outlet.

Water Pump

The pump I decided on is the Laing Delphi DDC 12V. I wanted to fit the pump inside the 360 if possible so it wasn't a difficult decision (Its just about the only suitable pump which will fit inside of the 360). The pump uses 3/8” barbs so getting the 7.5mm ID tubing on took a bit of doing but theres no chance of it coming off.

Although the Laing pump is small I still had to modify it a little to get it to fit. The plastic mounting tabs on the sides were cut off so the pump could be positioned where the fans used to be.

http://forums.xbox-scene.com/index.php?showtopic=467270 http://www.xboxchopshop.com/catalog/man_360_volts.php

I took the 12V from the DVD drive wire, instead of soldering to the board I cut the DVD power cable and soldered the pump wire to it. The pump also connected to the two grounds on the fan header.

One of the connections going to the pump was a very tight bend. To avoid kinking when the water heats up I used a spring around the tubing to hold the shape.

On the right hand photo the Inlet is on the left and the outlet on the right.

Flow path

Testing