3. Support the manifold and remove the
nut and washer from the center stud.
4. Lift the manifold away from the cylin-
der head.
5 . Remove the manifold gaskets.
Inspection
Remove the loose scale and carbon that
may have accumulated on the internal
It is es-
Figure 11G-2. Metal Clad Exhaust
walls of the exhaust manifold.
Gasket
Manifold
pecially important to clean the manifold
used on a turbocharged unit to eliminate
NOTE
the possibility of loose scale entering and
damaging the turbocharger.
Install the bevel washers with the
crowned sides toward the nuts.
Examine the exhaust manifold studs for
damage. If necessary, replace the
studs. New studs are driven in to 25-40
4. Thread the nuts on the studs. Then,
lb-ft (34-54 Nm) torque.
starting with the center nut and working
alternately toward each end, tighten the
manifold nuts to 30-35 lb-ft (41-47 Nm)
I n s t a l l Exhaust Manifold
torque.
Install the exhaust manifold on the cylin-
NOTE
der head as follows:
If the cylinder head was removed
1. Place a new gasket(s) over the studs
from the engine, do not tighten
and up against the cylinder head.
the manifold nuts until AFTER the
head is reinstalled. Otherwise, in-
NOTE
terference may be encountered be-
tween the manifold and cylinder
When installing the metal clad ex-
block bosses which serve as a
haust manifold gasket(s), be sure
support for the manifold when the
the crimped side of the gasket fac-
cylinder head is installed.
es
the
cylinder
head
(see
5. Connect the exhaust pipe to the mani-
fold. Tighten the brass exhaust mani-
2. Position the exhaust manifold over the
fold outlet flange nuts to 20-25 lb-ft
studs and against the gasket(s).
(27-34 Nm) torque.
3. Install the bevel washers on the
studs.