Got a bit of an issue with the ca , I have oil coming out off the rad overflow. The engine is a new build with arp studs and metal head gasket. I had the head skimmed and block decked I also shortened the stud above the water pump.
I have only ran the car on tick over to check the timing and in approx 1 minute it emptied half off the sump in to the coolant system which pressurised it and forced it out off the overflow, could my oil cooler have split?thanjs nismo .