Our faithful 6.0 is having its topside revitalized after 200k of good service (better EGR, oil cooler, APR headbolts, cleaning the "black scum" out of everything.
As we were starting to put it back together, we became concerned about a number of posts on this site where the poster had suffered repeated bent pushrods. And so we became very **** about not wanting to do the heads all over again for bent pushrods. The key seems to be, and we do not recall reading this in any posts, is the Ford shop manual statement saying quite clearly that when installing the rocker arms and pushrods [
B]THE DYNAMIC BALANCE ON THE FRONT OF THE CRANKSHAFT MUST BE POSITIONED SO THAT THE LOCATOR DOWEL HOLE IS IN THE 6 OCLOCK POSITION.
[/B] When we did this, we noticed that all of the roller tappets seemed to be at their "bottom" or "relaxed" position, that is, not being pushed on by any cam lobes.
Could it be that if the crank is not in this position that the tightening down of the rocker arm assembly leads to bent pushrods??