Ok, so I've been trying to get my hands on a picture of a drilled/tapped Phase one Dohc ej25 head for quite a while now. Several people say they have done it, but no one seems to have any pics. I think I know what needs to be done, but I'm not about to take a drill to my head before I'm dead certain. If anyone can help me out, I'd greatly appreciate it.
I'm drilling/tapping for a coolant feed. There is already a oil galley that jsut has a bolt in it that I am using for The Oil feed. Then I'm returning the oil to the pan. I need a feed line for the coolant, and then the other goes to the extra coolant tank for the turbo.
Have you thought about using the heater core lines? i used those when i needed a coolant source for my TD04. I just redirected the coolant through the turbo before it entered the fire wall. It worked perfectly and made my heat really crank out the BTUs. I am sure if you wanted you could T into the line also .
