Final Head Bolt Torque - First Cold Torque

[Deleted User]

Just finished the final increment of torquing the head bolts. I used the Craftsman 1/2" drive "Click" torque wrench. Final setting is at 75lb.

I am concerned with +/- % of accuracy. When I applied this last round of torque, the wrench clicked pretty quickly moving from the 65lb I left them at yesterday. I hope this slow increment will be better than going straight to 75 the first time.

Now to finish connecting all that was disconnected to remove the head in the first place and reinstall the Expansion/Freeze plugs.

A lot of work for a busted thermo housing and finding exhaust gases in the coolign system.

hoggyrubber

i have about 8 torque wrenches and all are used and i occasionally check them against each other and they are always very close. i tend to use my snap on dial type for stuff like this, you can actually see torque building, rather than click. i usually do mine in 20 lb increments in the correct order on stuff like this. i am no expert on anything, but i have noticed the first 10 lbs takes more of a rotation than the last. it seems to get less and less, then there seems to be a little rod strech at the end, then back to less rotation movement per lb of torque.

[Deleted User]

I thought that might be the case as the bolts got tighter. I went in roughly 10 lb increments waiting 24 hours between each step. I could only afford this Craftsman "click" version.

tigermoth

almost 40 years as a mechanic and i have never heard of the 24 hour wait between torque events. regards, tom

[Deleted User]

Understood. Someone mentioned going slowly between the increments to get a better, even spread across the head and gasket. Since I am not trying to "drive it today," the increments over several days worked for me as I applied the torque incremetn and moved on to other things.

[Deleted User]

Yes, I agree, waiting 24 hours between each increase in torque is a bit unusual!

Wishing you a tight gasket!,

Dan