1998 ACURA INTEGRA intake

ra
Engine
Engine Removal/lnstallation ............. 5-1
Cylinder Head/Valve Train ............... 6-1
Engine Block ......... ........7-1
Engine Lubrication .........8-1
Intake Manifold/Exhaust System ...... 9-1
Cooling ....... 10-1

En gine Remova l/l nstal lation
(cont'dl
Remove the intake air duct, air cleaner housing
assembly and the bracket.
6 r 't.0 mm9.8 N.m (1.0 kgt.m, 7.2 lbf.ft)
Remove the evaporative emission {EVAP)
canister hose (B 18B1, B'18C1 eng;nes).
control
5-4
\
7. Remove the brake booster vacuum hose, evapora-
tive emission (EVAP) control canister hose and tuel
return hose (818C5 engine).
Remove the engine wire harness connectors on the
right side of engine compartment.
6 x 1.0 mm9.8 N.m l1.O kgl.m,

r.lJ
Valve Clearance
Adjustment
NOTE:
. Valves should be adjusted cold; at a cylinder head
temperature of less than 100'F (38"C).
Adjustment is the same for both intake and exhaust
valves.
. After adjusting, retorque the crankshaft pulley bolt to
177 N.m (18.0 kgf.m, 130 lbf'ft).
1. Remove cylinder head cover.
ADJUSTING SCREW LOCATIONS:
EXHAUST
(
"UP" MARKS
TDC GBOOVES
2. Set the No. 1 piston at top dead center (TDC) (see
page 6-12). "UP" mark on the pulley should be at
the top, and the TDC grooves on the pulley should
align with the TDC groove on timing belt back
cover. TDC mark (painted white) on the crankshaftpulley should align with pointer on the timing belt
lower cover.
Number 1 piston at TDC:
POINTER ONLOWER
TDC MAFK(P.inted whh.l
(cont'd)
6-3

Valve Clearance
Adjustment (cont'dl
Adjust valve clearances on No. 1 cylinder.
Intske: 0.08 - 0.12 mm (0.003 - 0.005 inl
Exhaust: 0.15 - 0.20 mm (0.006 - 0.008 inl
Loosen the locknut and turn the adjusting screw
until feeler gauge slides back and forth with a slight
amount of drag.
7. Rotate the crankshaft 180' counterclockwise to
bring No. 4 piston to TDC. The "UP" mark should
be pointing straight down. Adjust valves on No. 4
cylinder.
Number 4 piston at TDC:
LOCKNUT9x0.75mm25 N.m {2.5 kgl.m, 18lbtft}
Tighten the locknut and recheck clearance again,
Repeat adjustment if necessary.
Rotate the crankshaft 180' counterclockwise(camshaft pulley turns 90'). The "UP" mark should
be on the exhaust side. Adjust valves on No,3 cylin-
der.
8. Rotate the crankshaft 180' counterclockwise to
bring No. 2 piston to TDC. The "UP" mark should
be on the intake side. Adjust valves on No. 2 cylin-
der.
Number 2 piston at TDC:
Number 3 Diston at TDC:
NOTE: Refer to page 6-31 when installing cylinder head
cover.
"UP" MARKS
"UP" MARKS
"UP" MARKS

Valve Seals
Replacement (cylinder head removal not required)
The procedure shown below applies when using the in-
car valve spring compressor (Snap-on YA8845 with
Y AAA45-2A 1 /8" attachment).
!@@ When using this tool, as with any tool,
always use approved eye protection. Using the
fight tool tor each job helps increase productivity
while safeguarding tools, equipment and ihe user.
Turn the crankshaft so that the No. 1 and the No. 4pistons are at top dead center (TDC).
Remove the cylinder head cover.
Remove the distributor.
Loosen and disconnect the timinq belt from the
camshaft oullevs.
5. Remove the camshaft holder bolts, then remove the
camshaft holders, the camshafts and rocker arms.
Intake Valve Seals
6. Using the 6 mm bolts supplied with the tool, mount
the two uprights to the cylinder head at the end
camshaft holders. The uprights fit as shown.
7. Insert the cross shaft through the bottom hole of
the two uprights.
8.
9.
10.
Select the 7/8 in. diameter long compressor attach-
ment and fasten the attachment to the No. 4 hole of
the lever arm with the speed pin supplied.
Position the piston at TDC and insen an air adaptor
into the spark plug hole. Pump air into the cylinder
to keep the valve closed while compressing springs
and removing the valve keepers.
Position the lever arm under the cross shaft so the
lever is perpendicular to the shaft and the compres-
sor attachment rests on top of the retainer for the
spring being compressed. Use the rear position slot
on the lever as shown.
NOTE: Put shop towels over the oil passages toprevent the valve keepers from falling into the cylin-
der head.
OIL PASSAGE
OIL PASSAGES
(cont'd),'.itil
i,
'6-b-'

Gylinder Head
lllustrated Index (cont'd)
CAUTION: When handling a mstal ga€kot, take care not to fold it o. damage the contact surfac6 ol the gasket.{
VALVE KEEPERS
\
SPRTNG [\RETaTNER\_>6
CYLINDER IIEAOAOLT11 x'1.5 mm
EXHAUST VALVE
EXHAUST VALSPRINGs------.--
r
€.-=---
€<_-
VALVE KEEP€NS
DOWEL PIN
SPRING AEIAINER
INTAKE VALVE SPRING
INTAKE VALVE STEM SEAL
VALVE SPRING SEAT
ENO PIVOT BOLT63 N.m {6.4 kgf.m,46 tbt.ftlSIEM SEAL
VALVE SPRINGSEAT
-----------rg
,@
EXHAUST VALVEGUIDE
INTAKE VALVE GUIDEInspection. page 6 26Replacement, page 6,27Reaming, page 6 28
CYLINDER HEADWarpage, page 6,30
L
DOWEL PIN
CYLINDER HEAD GASKET(3 LAYERS OF METALIReplace.
EXHAUST VALVE
85 N.m (8.7 kgtm, 63 lbf.ft) IApply engine oilto /lthe threads. / |
/ {e
\

Gylinder Head
Removal (cont'dl
Remove the fuel return hose and positive crankcase
ventilation (PCV) hose.
Remove the brake booster vacuum hose, water
bypass hose and vacuum hose.
ltosE
VACUUM HOSE
6-18
10.
9.
11.
Remove the throttle cable,
Remove the throttle control cable (automatic trans-
mission only).
NOTE:
. Take care not to bend the cable when removing
it. Always replace any kinked cable with a new
one.
. Adjust the throttle cable and throttle control
cable when installing (s€e section 11 and 14).
THROTTLE CONTROLCABLE
ADJUSTING NUT
Remove the engine wire harness connectors and
wire harness clamps f.om the cylinder head and the
intake manifold.
Four fuel injector connectors
Intake air temperature (lATl sensor connector
Engine coolant temperature {ECT) sensor con,
nector
TDC/CKP/CYP sensor connector
lgnition coil connector
ECT gauge sending unit connector
Throttle position (TP) sensor connector
Manifold absolute pressure (MAP) sensor con-
necto r
ldle air control (lAC) valve connector
EVAP purge control solenoid valve connector
Crankshaft speed fluctuation (CKF) sensor con-
nector
a
a
a
a
a
a
a
a
ADJUSTING

\-
Installation Sequence
Exhaust and intake valve seals are NOT interchanoeable.
NOTE: Place the end of valvespring with closely wound coilstoward the cylinder head.
EXHAUST VALVE SEALIBLACK SPRING}Replace.
@A..'..--uoruEKEEPER'
9-...-'PRTNGREYATNER
VALVE SPRING
INTAKE VALVE SEALIWHITE SPRINGIReplace.
I
PLASTIC MALLET
VALVE GUIDESEAL INSTALLER07GAD - PH70100
,@.t.'( (Sz) I<-- SPRING
V SEAT
NOTE: lnstall the valve spring seatsbefore installing the valve seals.
6-25