Head Bolt Torque
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Head Bolt Torque
How to torque Head Bolts for 1991 4BT & 6BT engines.
This was sent to me by a Cummins Technician,
I would take this as being accurate.
This is specific to my 1991
Jim
This was sent to me by a Cummins Technician,
I would take this as being accurate.
This is specific to my 1991
Jim
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Joined: Nov 2015
Posts: 906
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From: NE Wa
So if I'm reading this right you tighten them all in sequence to 66 ft-lbs, then tighten the 6 long bolts to 89 ft-lbs, then run through re-torque the 20 short bolts to 66 ft-lbs, then the 6 long bolts to 89 ft-lbs.
Now you go through and mark your head, the bolt and your socket so you can give them all a 90 degree turn in sequence. Would you follow the same procedure if you were running studs?
Now you go through and mark your head, the bolt and your socket so you can give them all a 90 degree turn in sequence. Would you follow the same procedure if you were running studs?
Thread Starter
Administrator
Joined: Nov 2004
Posts: 4,084
Likes: 235
From: Southern California
So if I'm reading this right you tighten them all in sequence to 66 ft-lbs, then tighten the 6 long bolts to 89 ft-lbs, then run through re-torque the 20 short bolts to 66 ft-lbs, then the 6 long bolts to 89 ft-lbs.
Now you go through and mark your head, the bolt and your socket so you can give them all a 90 degree turn in sequence. Would you follow the same procedure if you were running studs?
Now you go through and mark your head, the bolt and your socket so you can give them all a 90 degree turn in sequence. Would you follow the same procedure if you were running studs?
Yes,
You can follow along how I torqued the head in this post.
https://www.dieseltruckresource.com/...-329169/page5/
Jim
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