Head bolts snapping on re-torque

[hawaiiankanak]

So I took off my cylinder heads to change a head gasket. after a day of cleaning the heads and the block I was finally ready to install the new gasket and torque down everything.
Well on the 3rd pass of torquing (1st pass: 25lbs, 2nd pass: 45lbs, 3rd pass: 65lbs) one of the bolts snapped...
So I take all the god dam bolts out, take off the head, remove the broken bolt piece, use bolts from a NEW box.
wipe down block and head, reapply gasket, re-set head, start the sequence again. On 3rd pass again (65 lbs) *SNAP*. FML
at this point I read about the gasket (felpro) and they say if the gasket has been installed with more than 30lbs of torque, the permaseal on it is no more. So now I have to buy NEW bolts AND and NEW gasket....

WTF is going on??! I cleaned out all the dam treds for the bolts, I oil them before screwing them in, I go in order according to the book, I used the book AND multiple sites as reference for the max torque lbs.

Any help or advice would really turn my day around. I about ready to roll this F**king truck into the bushes.
Thanks

 

[Ride65]

Did you ever figure this out? Newer engine? I've read in my helms manual (02 Yukon, 5.3L)not to apply oil to bolts and to chase the threads with a tap, blow out the crap, then install. My sequencing calls for torque then rotate using certain degree of rotation depending on bolt location in the sequence.

 

[Redbog12]

Not sure How oil would cause that bolt to fail? I just came to this forum as i was a dodge man for 30 years and changing a water pump one time stripped out my aluminum block by following the torque instructions in the manual. Come to find out it was a misprint? and I should have been using Inch pounds and not foot pounds? Check the spec's again make sure they are correct? there is no reason for hardened bolts to fail when torquing them down to a lower breaking point than they are rated for.

 

[mogleybear]

I seem to remember something from years ago that said a lubricated bolt does not torque properly because the lube causes the torque to read lower than it actually is. I wonder if this may be why it is breaking, or it could be a misprint. I ran into that on the spindle bolts of a Chevrolet, it was supposed to be inch pounds vs foot pounds as printed in the GM service manual.

 

[98trck]

I didn't see what year truck and engine
but now the bolts are torque to yield, you have to have a special torque wrench that measures bolt stretch
bolts can only be used once then must be replaced
never use motor oil on bolts in a high temp area (engine, brake calipers )
the oil will carburize and cause problems when they have to be removed