[DMCForum] More info on those pesky head bolts
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[DMCForum] More info on those pesky head bolts



http://www.parttrackers.com/library/1/93/116/

A tech publications specialist at Volvo's U.S. headquarters in Rockleigh,
NJ, supplied us with a considerable amount of info for use in this section
(he expressed an admirably enlightened attitude toward helping us -- after
all, if a car can't get fixed right, its reputation will wither). Here are
the most important points we gleaned from it: 

All of Volvo's head bolt torque specs are for oiled threads. 
On the B28F V6, the head bolts are "angle torqued." Tighten them all to 44
ft. lbs. in the proper sequence, then, starting with bolt #1, loosen it
all
the way, and go to 15 ft. lbs. Using a protractor gauge (Volvo special
tool
5098, or an aftermarket equivalent), turn that handle 106 degrees. Do all
the others one at a time. Adjust the valves, warm up the engine, allow it
to
cool for at least two hours, then go back and give each bolt an additional
45-degree twist.


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