Have you checked this ? A news from the site macbidouille.com It is written in French but the pictures talk for themselves.Related to the perso site of an amazing guy : nysoyan.free.fr/Eaglefour/PowermacG5.html
I will update regularly this thread, because as said aqua on reply 2, it takes ages to open a page and I still have to read some pages.
The step to step how to disassemble the watercooling contained a lot of pictures.
Maybe some more infos for those who are afraid to read French. This guy has for his G5 watercooled, remod completely a copper water cooling to replace the alu-copper from Apple attached to the original radiator. He changed the coolant too by using some pro products like used for cars. Because of the famous liquid leaking which gives some cristal deposit on the processors. The pictures are amazing but need some time to upload. He could partner with aquamac to build new Hardware for Apple. The two main pictures, the cristals deposit on the first and the soldering of the new copper pipes : files.macbidouille.com/news/200711/12-filtered.jpg files.macbidouille.com/news/200711/IMG2792-filtered.jpg
That was a nice find bb, extremely interesting, took ages to open a page, but really nice soldering on those copper pipes. I am still thinking about what to do on my mac pro project for cooling. This time I want to cool the Northbridge and I would like to do the southbridge too. Thanks for the ideas!