With the head still on, I removed the Arp studs. I did not have to double nut them because after I made them hand tight, I turned the 1/4 turn clockwise.

Inspecting every stud, I can see the Arp thread sealer failure. It looks as if it chemically disintegrated from the coolant. Also was still gooey like straight from the tube. I then placed all the studs on my work bench for future cleaning and use. Some of the studs threads didn’t even have the sealer on them anymore.







I don’t like pry heads off if I can. So I used a rubber mallet and gently hit the sides of the heads to help loosen them.