I'm sort of a noob to build a complet custom water cooling system. I've only used a external kit until now. What I'd like to know is, what is the best way to place your fans on the heater core, pulling air through the core or blowing air through the core?...... :shrug: I've modded a GM core and built a shroud with about 1" spacing, I'm using 2 Pannaflo 120mm m fans. I'm looking to get the best out of the system. Thanks for all your input in advance........

This is a pic of how I've got it set up right now.