head HONDA INTEGRA 1994 4.G User Guide

Timing Belt
Inspection
Remove the cylinder head cover.
. Reler to page 6-3'l when installing.
Inspect the timing belt for cracks and oil or coolant
soaking.
NOTE:
. Replace the belt if oil or coolant soaked.
. Rsmove any oil or solvent that gets on the belt.
Rotate pulley
and inspscr bell.
After inspecting, retorque the crankshaft pulley bolt
to 177 N'm ('18.0 kgf'm, 130 lbt'ft).
Tension Adjustment
CAUTION: Always Ediust timing belt tonsion with tho
cngin. cold.
NOTE:
. The tensionet is spring-loaded to apply proper ten-
sion to the belt automaticallv after making the follow-
ing adjustment.
. Always rotate the crankshaft counterclockwise when
viewed trom the pulley side Rotating it clockwise
may result in improper adjustment ot the belt ten-
sion.
Remove the cylinder head cover. (Refer to page
6-31 when installing.)
Set the No. 1 piston at TDC (see page 6-12).
Rotate the c.ankshaft 5 - 6 revolutions to set the
bslt.
4. Set the No. I piston at TDC.
3.
ADJUSNNG BOLT54 N.m (5.5 kqf.m,a0 rbr.ftlFor adiustment only,do not remove,
5.
6.
7.
8.
Direction olrolatlon.
Loosen the adiusting bolt 1/2 turn (180') onlv
Rotate the crankshaft counterclockwise 3-teeth on
the camshaft pulley.
Tighten the adjusting bolt to the specified torque.
After adjusting, retorque the crankshaft pulley bolt
to 177 N.m (18.0 kgl.m. 130 lbf.ft).
6-9

1.Remove the cylinder head cover.
. Refer to page 6-31 when installing.
Remove the Dulley bolt and crankshaft pulley (see
page 6-8).
Remove the middle cover and the lower cover.
NOTE:
. Do not use the middle cover and lower cover for
storing items disassembled.
. Clean the middle cover and lower cover before
installation.
CAP NUT 6 x 1.0 mm
10. Loosen the adjusting bolt 180'.
1'1. Push the tensioner to remove tension from the tim-
ing belt, then retighten the bolt.
12. Remove the timing belt from the pulleys.
NOTE: Push the tensioner pulley toloosen the belt.
8.
9.8 N.m 11.07.2 rbl.ftl
WASHER
orReplace when damaged
CYLINDEF HEADCOVERReter to page 6-31 wheninstalling.ADJUSTING BOLT10 x 1.25 mm54 N.m 15.5 kg{.m,/r0 lbf.ftlFor adjustment only,
TIMING BELTAdiustment, Page 6I
LOWEB @VER
MIDOLE COVER
6x1.0mm9.8 N.m 11.0 kgJ m, 7.2 lblftl
6x1.0mm9.8 N.m ('1.0 kgt.m,7.2 lbl fr)
Remove anY oiland clean
KE
6x1.0mm
NMING BELTGUIOE PLATElnstallwith concavesurface facing out.
and clean.CRANKSHAFT PULLEYRemove any oiland clean on ihetiming belt guideplate sido.9.8 N.m (1.0 kgtm,7.2lbt'ftl
6-11

Cylinder Head
I x 1.25 mm22 N.m 12.2 kgt.m,16 rbf.ft)
lllustrated lndex
CAUTION: To avoid damaging the cylind6r hoad, waii until ongin€ coolant temporature drop3 below lOO"F (38"C) b€forersmoving it.
NOTE: Use new O rings and gaskets when reassembling.
CAP NUT 6 x 1.0 mtn9.8 N.m 11.0 kgtm,7.2lbtftl
e
et
CYLINDER HEADCOVERRefer to page 6-31 wheninstallang.
RUBBER SEALReplace when damagedor doteriorated.
I x 1.25 mm
EXHAUST CAMSHAFTHOI.DER
INTAKE CAMSHAFT HOI.DER
24 N.m 12.4 kgf.m, -. See section17 rbt.tr) --_r,_
__.|._6x1.0mm9.8 N.m {1.0 kgl.m,7.2lbf.ft)O-RINGRoplace.
RUBBER CAPReplace for oilleakage.
EXHAUSTCAMSHAFT
LOCKNUT
INTAKE CAMSHAFTInspection, page 5-21
SEALInstallation, page 6-30Replace.- 6tal --,
ffi;r
KEY
/./
"
@6
SEALReplace.'@
t25 N.m {2.5 kgf.m,18 tbtfiJ
ROCKER ARM
I x 1.25 mm37 N.m (3.8 kgt.m,27 rbtftt
CAMSHAFT PULLEYSRemoval, page 6 19Installation, page 6,30
8 x 1.25 mm37 N.m 13.8 kg{.m,27 lbfftl

CAUTION: In h.ndling r m.t!l gr3kct, trko clrc not to fold it or dlmaga tho contact surfacr ol thr gaskat.
VAIVE XEEPERS
SPRING
RETAINER \.\...i6
r*#:-3STEM SEAL
VALVE SPRINGSEAT
CYUNDEB HEADBOLT&t N.m 18,5 kgl'm,61 tbf.ftlApply engine oiltothe threads.
END PIVOT BOLT6:t N.m l6.a kst'm,,16 lbl.ftl
VALVE KEEPERSI
JI
--../ SPf,ING RETAINEB
ED..-
$----
nrAxE vaLvE SPRING
S---- twtAKE vALvE STEM SEAL
€.---- valvE SPRING sEAT
EXHAUST VALVEGUII'E
INTAKE VAI-VE GUIT'EInsp€ction, pago S24R6placom6nt, pago 6-25Reaming, pag€ 6-26
CYUNDER HEADWarpage, page 6-28
INTAKE VALVEReplacement, Page 6_22
TX)WEL PINDOWEL PIN
CYLINDER HEAD GASKET{3 LAYERS OF METALIReolac6.
O.RINGReplac€.
EXHAUST VALVE
OIL CONTROLORIFICEClean.
--------ig
6-15

Gylinder Head
Removal
I
t
Engine removal is not required for this procedure.
CAUTION: To avoid damaging tho cylinder head, wait
until tho ongino coolant temporature drops bolow 100"F
{38"C) beforo loo36ning the rotainin0 bolts.
NOTE:
. Inspect the timing belt before removing the cylinder
neao.
. Turn the crankshaft pulley so that the No. 1 piston is
at top dead center (TDCI (page 6-12).
. Mark all emissions hoses before disconnecting them.. Anti-theft radios have a coded theft protection circuit.
Be sure to get the customer's code number before.- Disconnecting the battery.- Removing the No. 32 (7.5 A) fuse irom the under-
hood fuse/relay box.- Removing the radio.
After service, reconnect oower to the radio and turn it
on.
When the word "CODE" is displayed, enter the cus-
tomer's 5-digit code to restore radio operation.
1. Disconnect the negative terminalfrom the battery.
2. Drain the engine coolant (see page 10-5).
. Remove the radiator cap to speed draining.
3. Relieve fuel pressure (see Section 1 1).
@ Do not smoke whils working on tusl
systom, keep opon flame or spark away trom work
area. Drain fuol only inlo an approvod containsr.
4. Disconnect the fuel feed hose.
SERVIC€ BOLT
WASHERSReplace.
5, Remove the intake air duct.
Remove the breather
evaporative emission
hose, water bypass hose and(EVAP) control canister hose.

Remove the fuel return hose and positive crankcase
ventilation (PCV) hose.
Remove the brake booster vacuum hose, water
bypass hose and vacuum hose.
ERAKE BOOSTERVACUUM HOSE
HOSE
VACUUM HOSE
HOSE
9.
10.
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 (see section 11 and 14).
THROTTLE CONTROLCABLE
Remove the engine wire harness connectors and
wire harness clamps trom the cylinder head and the
intake manifold.
Four fuel injector connectors
Intake air temperature (lAT) sensor connector
Engine coolant temperature (ECT) sensor con-
necror
TDC/CKP/CYP sensor connector
lgnition coil connector
ECT gauge sending unit connector
Throttle position (TP) sensor connector
Manifold absolute Dressure (MAP) sensor con-
nector
ldle air control (lAC) valve connector
EVAP purge control solenoid valve connector
11.
a
a
a
a
a
a
a
a
a
(cont'dl
ATI'USTING
6-17

Cylinder Head
Removal (cont'dlI
12.R€move the spark plug caps and distributor from
the cvlinder head.
Remove the upper radiator hose, heater hose and
water bypass hose.
UPPER RAI'IAYOR
14. Remove th6 solash shield.
WATER BYPASS
9.8 N.m {1.0 kgt m.t.2 tbr.frt
sHtEut
15. Remove the engine ground cable.
Remove the adjusting bolt and mounting bolts, then
remove the power steering (P/S) pump belt 8nd P/S
pump.
. Do not disconnect the P/S hoses.
6x1.0mmADJUSTINGBOLT9.8 N.m 11.0 tgfm,7.2 tbf.ftl
8 x 1.25 mm24 .m (2.akstm, 17lbf.ftl
P/S PUMP
Remov€ the air conditioning (Ay'Cl compressor(see pags 6-10).
R€move the alternator belt (see page 6-10).
Ramove the cruise control actuator.
8 x 1.25 mm2a N.m 12.4 kgt m,
belt
17.
t8
ACTUATOR

52 N.m (5.3 kgt'm, 38 lbf'ft)
19. Remove the side engine mount.
10 x 1.25 mm
20. Remove the cylinder head cover.
WASHERS
SIDE ENGINEMOUNT
12 x 1.25 mm74 N.m {7.5 kgf.m,5{ rbtftl
CYLINDEB HEAD
Remove the timing belt (see page 6-10).
Remove the camshaft pulleys and back cover.
23. Remove the exhaust manifold.
SELF.LOOKING NUT8 x 1.25 mm
BACK COVER
BRACKET
(cont'd)
6-19

Cylinder
Removal
Head
(cont'dl
GASXET
IMTAXE MANIFOLD
2,0. Remove the intake msnifold.Remove the camshaft holder bolts, then remove the
camshaft holde.s. camshafts and rocker arms.
25. Loosen the locknuts and adiusting screws.27. Remove the cylinder head bolts. then remove the
cvlindsr head.
CAUTION: To preyant warpago. unlcr.w thc bolt3
in laquoncc 1/3 turn at I tim6; .apeat the $qurnca
until sll boltr arc loosrncd.
ADJUSNNG SCNEW LOCATN)NS:
CYLINOER HEAD BOLTS LOOSENING SEOUENCE

!
1.
2.
Camshafts
Inspection
Loosen the adjusting screws.
Remove the camshaft holders and the rocker arms
NOTE: Mark the rocker arms before removing
them.
Reinstall the camshaft and holders. Tighten the
camshaft holder bolts in a crisscross pattern, begin-
ning with the inner bolts.
9.8 N.m (1.0 kgf.m,7.2 lbf.ft)
Seat the camshafts by pushing them toward the dis-
tributor end of the head with a screwdriver.
Zero the dial indicator against the end of the
camshaft. push the camshaft back and forth and
read the end play.
Camshalt End Play:
St.ndard lNow): 0.05 - 0.15 mm
(0.002 - 0.006 inl
Seivice Limit: 0.5 mm {0,02 in)
Remove the camshaft holder bolts from the cylinder
head.
NOTE: Unscrew the camshaft holder bolts two
turns at a time, in a crisscross pattern.
Lift the camshafts out ot the cylinder head. wipe
them clean, then inspect the lift ramps. Replace the
camshaft if any lobes are pitted, scored, or exces-
srvely worm
Clean the camshaft journal surfaces in the cylinder
head, then set the camshaft back in place. Insert a
plastigage strip across each iournal.
Install the camshaft holders and torque the bolts to
the values and in the sequence shown on page 6-30.
NOTE: Do not rotate camshafts during inspection.
-
6-21
10.Remove the camshaft holders. Measure the widest
ponion of plastigage on each journa..
Camshaft-to Holder Oil Clearance:
Standard lNewl: 0.039 - 0.069 mm(0.0015 - 0.0027 in)
Sarvico Limit 0.15 mm {0.006 inl
11. lf camshaft-to-holder oil clearance is out of toler
ance:
. And the camshaft has already been replaced,
vou must replace the cylinder head.
. lf the camshaft has not been replaced, first check
total runout with the camshaft supported on V-
blocks.
Clmshaft Total Runout:
StEndard {New): 0.03 mm (0.001 inl max'
Servico Limit: o.Oil mm {0.002 inl
- lf the total runout of the camshafts is within tol-
erance, replace the cylinder head.
- lf the total runout is out of tolerance, replace the
camshafts and recheck. lf the oil clearance is still
out of tolerance. replace the cylinder head.
PLASTIGAGE