Acura NSX 1991 Manual page 161

Main Menu
Exhaust Pipe and Muffler
Replacement
NOTE: Use new gaskets and self-locking nuts when reassembling.
JOINT PIPE
SELF-LOCKING NUT
8 x 1.25 mm
22 N-m (2.2 kg-m,
16 Ib-ft)
Replace.
Tighten the flange nuts
in steps, alternating
side-to-side.
THREE WAY CATALYTIC
CONVERTERS (TWCs)
Inspect as shown
below.
GASKETS
Replace.
FRONT EXHAUST-
PIPE A
SELF-LOCKING NUTS
10 x 1.25 mm
55 N-m (5.5 kg-m, 40 Ib-ft)
Replace.
Table of Contents
REAR SECONDARY
HO2S
45 N-m (4.5 kg-m, 33 Ib-ft)
GASKETS
• Be careful not to
Replace.
damage.
• Use the special tool
for removal and
installation.
REAR EXHAUST
PIPE A
SELF-LOCKING NUTS
8 x 1.25 mm
22 N-m (2.2 kg-m, 16 Ib-ft)
Replace.
Tighten the flange nuts in steps,
alternating side-to-side.
SELF-LOCKING NUTS
10 x 1.25 mm
34 N-m (3.4 kg-m, 25 Ib-ft)
Replace.
GASKET
Replace.
GASKET 6 x 1.0 mm
10 N-m (1.0 kg-m, 7 Ib-ft)
Replace.
TWC Inspection:
Using a flashlight, make a visual check for plugging, melting
or cracking of the catalyst.
TWC
MUFFLER
FRONT SECONDARY
HO2S
45 N-m (4.5 kg-m, 33 Ib-ft)
• Be careful not to
damage.
• Use the special tool
for removal and
installation.
JOINT
PIPE
GASKETS
Replace.
SELF-LOCKING NUT
8 x 1.25 mm
22 N-m (2.2 kg-m, 16 Ib-ft)
Replace.
Tighten the flange nuts in steps,
alternating side-to-side.
FLASHLIGHT