Cylinder Head Installation - Honda Acura NSX 1991 Service Manual

Cylinder Heads
Rear:
8x 1.25 mm
22 N*m (2.2 kg-m,
3. Install the cylinder heads on the engine block.
The cylinder head dowel pins and the head oil con-
trol orifice must be aligned.
Always new cylinder head gasket.
l
CYLINDER HEAD
GASKET (METAL)
Replace.
\ HEAD ORIFICES
D O
V
O-RING
Replace.
OXYGEN SENSOR
45 N-m (4.5 kg-m,
33 lb-ft)
REAR EXHAUST
MANIFOLD
LOCKING NUTS
8x 1.25 mm
34 N-m (3.4 kg-m,
25 lb-ft)
Replace.
CYLINDER HEAD
GASKET (METAL)
Replace.
,
P I N S
4. Tighten the cylinder head bolts sequentially in two
or three steps.
Apply clean engine oil to the bolt threads and
l
washer contact surfaces.
Specified Torque
11 x 1.5 mm
78 N-m (7.8 kg-m, 56 lb-ft)
NOTE: We recommend using a beam-type torque
wrench. When using a preset-type torque wrench,
be sure to tighten slowly and not to over-tighten.
CYLINDER HEAD BOLTS TORQUE SEQUENCE
CYLINDER HEAD BOLTS
78 N*m (7.8 kg-m, 50 lb-ft)
Apply clean engine oil to the
bolt threads and washer contact
surfaces.