[pHaestus]

Here are a couple articles that might help you a little bit: http://www.procooling.com/index.php?...ticles&disp=73
http://www.procooling.com/index.php?...ticles&disp=37

Second one is kinda nerdy but whatever... I can't off the top of my head recall the fedco number of the heatercore I always used. I'll see if I have it in my notes somewhere at home...