Primary coolant flow is from lower radiator hose, into water pump, to back of engine, up to head, forward to water outlet/thermostat, into radiator. There is a by-pass off the water pump and a few smaller holes in the head deck that move smaller volumes of water.
I have a 44mm WG for my setup, but because I'm setting up twin scroll plumbing, I may get a second one to keep the pipes separated. Of course, I have no idea yet how my setup will work, the turbo is likely oversized for my application.
