that's a Garmon top secret procedure :hehe: they break if anyone else tries to do it !.
What I know about it you have to torque each bolt in 5lbs increments.... all the way to where to want ( 120lbs ) which is asking for them to break but, if done right.... they hold. It will take hours to do but, I believe that's how it's done.
150lbs!!! Wow, that's some serious torque on a head bolt!
This is the very reason the HG's let loose, the bolt streaches and the boost escapes. Theres no better fastener or way to hold a head on than studs, and your not trying to pull the threads out of the block this way also.
. Thier overpriced i agree, but necc. if enough boost is used, but overtorque and using the bolt in the wrong psi than it was manufactured for is asking for trouble in my opinion... Ryan
Wrong and wrong.
I have seen trucks running stock headbolts make enough boost to cause you to crap yourself. When torqued properly, bolts will work fine. Also, I have never seen bolts pull threads out, but studs are another story.
HG's can go for a variety of reasons. I'll buy that bolts at stock TQ specs can lead to HG failures, but these would happen with studs at those same TQ specs.