I was also told after the 3rd stage of torgue to tighten head bolts 90% more and to use new head bolts, what are your thaughts on that. Larry
These specs are right out of the manual.I checked to see about doing the fourth step but it is not mentioned.
As far as replacing the headbolts, I'm not sure. If I was doing it for someone else and Duetz required it, I would probably replace.Someone else on the site with more practical experience could tell us whether or not it's a common practice. On other heads that I have replaced, including an international 6.9, I used the original bolts without a problem.Scott