REPAIR INSTRUCTIONS
Page 255
7. Oil all cylinder head capscrew bosses,
capscrew threads and washers with engine
oil prior to assembly. Do not oil threads in
cylinder block. Using torque wrench
J 24407, or equivalent, tighten all cylinder
head mounting capscrews to specification in
three stages as listed below. Refer to
Figure 277 for the tightening sequence.
a.
Tighten all capscrews in sequence to
50 lb-ft (68 N•m).
b.
Tighten all capscrews in sequence to
125 lb-ft (170 N•m).
c.
Tighten all capscrews in sequence to
the final specified torque value of
205 lb-ft (278 N•m).
277
Figure 277 — Head Bolt Torque Sequence Chart
Exhaust Manifold Installation
[214 EG]
MANIFOLD STUD INSTALLATION
Apply Loctite
®
272 to the cylinder head
engagement threads of all exhaust studs, prior to
installation.
Lower exhaust stud holes intersect with the push
rod holes; upper exhaust holes may intersect as
well. This requires that all exhaust studs be
sealed at installation to prevent oil leakage.
On some E-Tech™
engines, the lower exhaust
manifold-to-cylinder head stud hole may be
drilled deep enough to allow the stud to enter the
push rod bore. In these instances, the 20 lb-ft
(27 N•m) of torque may not be reached until the
stud contacts the push rod. In all cases, a stud
protrusion of 1.75 inch (44.45 mm) must be
maintained. Refer to Figure 278.
278
Figure 278 — Exhaust Stud Protrusion
5_106_00.bk Page 255 Friday, August 4, 2000 11:17 AM
BDC for engine manuals and specs
