Torque to yield, head bolts...

rustycowll69 said

I had to break loose a TTY cam bolt on an Intrepid 3.5L v6. I had a 3 or 4ft cheater on my breaker bar, and it was all my buddy and I could manage to break it loose. I thought for sure the bolt would shear or the drive would shear on my wrench, but thankfully neither failed. I swear that bolt must have been wound like a clock spring, before it loosened.

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Tooljunkie said

Been there done that. Three years at a dodge dealership. Bought a 1-7/16 wrench,stuck it in vise, heated it and bent it to hold cam. Nothing i hate more than damaging a new tool.
Ford cam phaser bolts too.

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I'll bet those bolts were thread locked and that's why they came out so hard. TTY won't have that problem. Like Ford pick up driveshaft bolts. 12mm 12 point head Locktighted in with 50,000 miles on the clock. I warranted a lot of wrenches and 3/8 drive sockets before I discovered the 1/2" drive Nissan head bolt socket. A1/2" impact will take them loose!