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Old 03-25-2002, 08:11 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Angle of rotation means just that! On MB engines starting around 1979 the head bolts are "stretch to yield". So follow the torque sequence as specified. 25nm= 18ftlbs & 40nm=28ftlbs. Then use a breaker bar with socket & perform the 2 90deg angle rotation. IN other words turn each bolt 1/4 turn (two times in sequence). AS long as you have good(or new) head bolts the final torque doesn't matter.
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