3.9 Cummins Engine

miner09 · Nov 2, 2017

Anyone know the torque for head--bearings on a 3.9 Cummins. In a Sky lift.
Thanks

enginegeek21 · Nov 6, 2017

http://www.4btswaps.com/forum/archive/index.php/t-469.html

the link is to another forum online... This should help...

It says 92ft pounds for all head bolts...

MikeJM · Nov 6, 2017

Right out of the book
Connecting rod in 3 steps, 26, 52, and 74 ft-lb
Main bearing in 3 steps, 44 88 and 129 ft-lb
Head in several steps, 66 ft-lb, (ALL) recheck all
90 ft-lb (long cap screws only), recheck long ones
+90 degrees (ALL)
Small rocker bolt, 18 ft-lb

3.9 Cummins Engine

miner09

Well-known Member

enginegeek21

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MikeJM

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