Not too much accomplished tonight. I finished tearing down the head before it goes to the machine shop tomorrow. Removed the lower intake, engine hoist brackets, wiring harness supports and several sensors.
Notice the discoloration of the valves in the #6 cylinder compared to the other valves. I think this cylinder has been leaking for awhile.
I don't understand all the fuss about the PHH. It's easy to replace!
I went ahead and mic'd all the head bolts. They were all within spec. Factory service manual says minimum thickness of 10.6 mm at a specified point along the threads. Most of the bolts were about 10.8 mm with the smallest measurement of ~10.76 mm. New, unused bolt should be 10.85 - 11 mm range.
At ~$14 bucks apiece, I'm glad I don't need to replace them all.
It's off to the machine shop tomorrow morning.