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Some say just re-torque the head some say back the bolts

B

Bhunt

Member
On a case SC Some say just re-torque the head . Then some say back the bolts 1/4 and re-torque who's right? I've heard of this before but I don't see the logic in backing them off 1/4 and re-torqueing. Truth is I've done a few 350 motors and 454 but I never even re-torqued the heads before.
Can anyone help us clarify.
Byron
 
The reason for the loosening of the bolts is the breakaway torque, or the torque needed to start the bolts turning. Many times it is
greater than the final torque number you're looking for. You'll simply click or trip the torque wrench before the bolt starts to move.
Nuts and studs are a little more reliable and do squeeze more reliably than bolts. The reason they are used in high compression and any
type of competition engine.
 
(quoted from post at 03:44:33 04/26/15) The reason for the loosening of the bolts is the breakaway torque, or the torque needed to start the bolts turning. Many times it is
greater than the final torque number you're looking for. You'll simply click or trip the torque wrench before the bolt starts to move.
Nuts and studs are a little more reliable and do squeeze more reliably than bolts. The reason they are used in high compression and any
type of competition engine.
Click to expand...
I did find that same explanation in the archives as well. Thanks so much for serving and thanks for the response Byron
 
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