wjburken
Supporting Member
Pressure checking a head is not the best way of testing as they generally don't heat them up when they test them. They should either have tested with Mag Particle or Liquid Penetrant testing. When I designed equipment for Magnaflux, I built more than a few units that replaced pressure testing set-ups for this exact reason.That's the kicker. Their site is very specific about using a Sunnen pressure tester to make sure no bad ones go out. I'm kicking myself for not inspecting them super closely before installing....because now I don't know if it was already cracked (presumably) or developed in less than 500 miles (unlikely).