1991 ACURA NSX roof rack

Cylinder Heads

Removal

Engine removal is not required for this procedure. Make sure jacks and safety stands are
placed properly and hoist brackets ere attached to cor- rect positions on the engine.
CAUTION: Use a fender cover (special tool) to avoid damaging
painted surfaces. Unplug the wiring connectors carefully while holding
the connector portion to avoid damage.
To avoid damaging the cylinder heads, wait until the
engine coolant temperature drops below 100°F
(38°C) before loosening the retaining bolts. Do not open the engine cover when the roof panel is
stored (NSX-T open top).
NOTE:
Unspecified items are common.

Mark all wiring and hoses to avoid misconnection.
Also, be sure that they do not contact other wiring or

hoses or interfere with other parts.

Inspect the timing belt before removing the cylinder

head.

Turn the crankshaft pulley SO that the No. 1 piston is at top dead center (see page 6-19 ('91-'93) or ('94-'96)).
1. Disconnect the negative terminal from the battery.
2. Remove the expansion tank cap. Use care when removing the expan-
sion tank cap to avoid scalding by engine coolant
or steam.
3. Raise the car, then remove the right rear wheel/tire.
4. Drain the engine coolant (see page 10-5 ). 5. Remove the engine under guard, then remove the
front exhaust pipe A.

GASKETS
Replace.

FRONT EXHAUST

PIPE A

SELF-LOCKING NUT

10 x
1.25
mm

55 N·m (5.5 kg-m, 40 Ib-ft)
Replace.
SELF- LOCKING NUT

8 x
1.25
mm

22 N·m (2.2 kg-m. 16 Ib-ft)

Replace.

6. Remove the rear exhaust pipe A.

SELF- LOCKING NUT

8 x
1.25
mm
22 N·m (2.2 kg-m, 16 Ib-ft)

Replace.

REAR

EXHAUST

PIPE A

SELF-LOCKING NUT
10 x
1.25
mm

55 N·m (5.5 kg-m.

40 Ib-ft)

Replace.
GASKETS

Replace.

7. Remove the engine oil cooler base assembly (see
page 6-15 ('91-'93) or ('94-'96).

8. Lower the car.
9. Remove the strut brace (see page 5-3 ).ProCarManuals.com

Opener/Latch/Opener cable/Hook stop/Roof stop

bracket removal:

1. Open the engine cover. Remove the screws, then

remove the support rod bracket. Remove the push

nuts, then remove the engine cover insulator.

ENGINE

COVER

SUPPORT ROD

BRACKET
ENGINE COVER

INSULATOR
2. Remove the roof cover latch, roof cover opener and

roof cover opener cable from the engine cover.

NOTE: Take care not to bend the roof cover opener

cable.

6 x 1.0 mm

10 N-m
(1.0 kg-m,

7.2 Ib-ft)

ROOF COVER

OPENER
ENGINE COVER

SHIMS

Thickness: 1.0 mm

(0.039 in)

ROOF COVER

LATCH

ROOF COVER

OPENER CABLE

ROOF COVER

OPENER
R
OOF COVER

OPENER CABLE

KNOB
ROOF COVER

LATCH
ROOF COVER

OPENER CABLEProCarManuals.com

Engine Cover/Roo f Cove r
Replacemen t
3. Remov e th e roo f sto p bracket s an d hoo k stop s fro m
th e engin e cover .
LEFT ROO F STO P BRACKET /
ROO F HOLDE R SWITC H RIGH
T
ROO F STO PBRACKE T
ENGINECOVERHOOK STOP S
CONNECTO R
LEF T ROO F
STO P BRACKE T
This scre w o n th e righ troof sto p bracke t i sscre w A .
Nu t locations , 4
6 x 1. 0 m m10 N- m (1. 0 kg-m ,7.2 Ib-ft ) HOO
K STO P
4. Installatio n is th e revers e o f th e remova l procedure .
NOTE:
• Mak e sur e th e roo f cove r open s properl y an d
lock s securely .
• Mak e sur e th e roo f fit s o n th e engin e cove r
securely .
HOOK
STO P
ROO
F HOLDE R
SWITCHENGINECOVERROOF
ROO F SIDE .
HOO K
ROOF
ProCarManuals.com

Troubleshooting

Tips and Precautions

• Insert the connector all the way, and make sure it is

securely locked.

• Position wires so that the open end of the cover

faces down.

Face

open end

down

Handling Wires and Harnesses

• Secure wires and wire harnesses to the frame with

their respective wire ties at the designated locations.

• Remove clips carefully; don't damage their locks.

Slip pliers under the clip base and through the hole at an

angle, then squeeze the expansion tabs to release the

clip.

SNAP-RING PLIER

After installing harness clips, make sure the harness

doesn't interfere with any moving parts.

Keep wire harnesses away from exhaust pipes and

other hot parts, from sharp edges of brackets and

holes, and from exposed screws and bolts.
Seat grommets in their grooves properly.

NOT GOOD

Testing and Repairs

• Do not use wires or harnesses with broken insulation.

Replace them or repair them by wrapping the break

with electrical tape.

• After installing parts, make sure that no wires are

pinched under them.

• When using electrical test equipment, follow the

manufacturer's instructions and those described in

this manual.

• If possible, insert the probe of the tester from the wire

side (except waterproof connector).

Use a probe with a tapered tip.

• Refer to the instructions in the Honda Terminal Kit for

identification and replacement of connector terminals.ProCarManuals.com