cylinder head HONDA INTEGRA 1994 4.G Workshop Manual

Standards and Service Limits
Cylinder Head/Valve Train (B188t enginelSecti6
*: Measured between the camshaft and rocker arm.
NH: NIHON HATSUJO manufactur€d valve spring
CH: CHUO HATSUJO manufacturod valve sDrino
- Declron
MEASUREMENTSTANDARD {NEWI '
SERVICE LIMIT
Compression250 rpm and wide open th.ottl€ Nominal
kPa (kgflcm?, psi) Minimum
Maximum variation
1,370 (14.0, 199)
930 (9.5, 140)
200 t2.0,2a)
Cylinder h.adW6rpage
Heightr31.95- 132.05 (5.195 - 5.199)
0.05 (0.002)
CamshaftEnd play
Camshaft-to-holder oil clearance
Total runout
Cam lobe height tN
EX
0.05 - 0.15 (0.002 - 0.0061
0.030 - 0.069 10.0012 - 0.0027)
0.03 (0.001) max.
33.7 16 11 .327 1l
33.528 (1.3200)
0.5 (0.02)
0.1s {0.006)
0.04 (0.002)
Valve clearance (Cold)* lN
EX
Valve stem O.D. tN
EX
Stem-to-guide clearance lN
EX
0.08 - 0.12 {0.003 - 0.005)
0.'r 6 - 0.20 (0.006 - 0.008)
6.580 - 6.590 (0.2591 - 0.2594)
6.550 - 6.s60 (0.2579 - 0.2583)
0.02 - 0.0s (0.001 - 0.002)
0.05 - 0.08 (0.002 - 0.003)
6.s5 (0.258)
6.52 (0.257)
0.0810.003)
0.11 (0.004)
width tN
EX
Stem instslled height tN
EX
r.25 - 1.55 (0.049 - 0.061)
1.25 - 1.55 {0.049 - 0.061)
40.765 - 41.235 (1.6049 - 1.6234)
12.763 - 43.235 t1,6a37 - 1.7022)
2.0 t0.08)
2.0 (0.08)
41.485 (1.6333)
43.485 (1.7120)
Valve springFree length {Reference} lN
EX NH
CH
42.36 (1.668)
47.09 {1.854}
47.08 (1.854)
41.s6 {1.636)
46.27 tl.A22l
46.21 l1.a22l
Valv6 guideLu. lN
EX
Installed height lN
6.61 - 6.63 (0.260 - 0.261)
6.61 - 6.6s (0.260- 0.261)
13.75 - 14.25 {0.541 - 0.561}
r5.75 - 16.25 10.620 - 0.640)
6.65 (0.262)
6.6510.2621
3-2

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 ....... 1O-1

Cylinder Head/Valve Train
81881 engine
Speciaf Tools .............6-2
Valve Clearance
Adiustment ............6-3
Valve Seals
Replacement (cylinder head
removal not required) ..................... 6-5
Reconditioning ......6-27
Timing gelt
lllustrated Index ............................... 6-7
Inspection .............. 6-9
Tension Adiustment ........................ 6-9
Removal .................6-10
Installation .............6-12
Crankshaft Pulley Bolt
Replacement .........6-8

6-3
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 kgim, 130 lbf.ft).
1. Remove cylinder head cover.
ADJUSTING SCREW LOCATIONS:
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 crankshaft
pulley should align with pointer on the timing belt
tower cover.
Number 1 Diston at TDC:
INTAKE
EXHAUST
TDC MARKSlPeinted whitel
CRANKSHAFTPULLEY
"UP" MARKS
TDC GROOVES

Valve Seals
Replacement (cylinder head removal not requiredl
NOTE: Cylinder head removal is not required in this
procedure.
The procodure shown below applies when using the in-
car valve spring compressor (Snap-on YA8845 with
Y AAA$-2A 718" attachment).
@@ whcn u3ing this tool, a: with any tool,
always u!€ agproved cyr Protcction. Using th.
right tool for cach iob hclps incraa3. produstivity
whilo 3ltrgu8rding tool!, cquipmcnt lnd the u3c1'
1. Turn the crankshaft so that the No. I and the No' 4
pistons are at top d€ad center (TDC).
2. Remove the cylinder head cover.
3. Remove the distributor.
4. Loosen and disconnect the timing belt from the
c8mshaft pulleys.
5. Remove the camshaft holde, bolts, then r€move the
camshaft holder, the camshaft and rocksr arms.
lntakc V!lv6 Sclls
6. Using the 6 mm bolts supplied with the tool, mount
the two up.ights to the cylinder head 8t the end
camshaft holde.s. The uprights fit as shown.
7. Insort the cross shaft through the bottom hole ot
the two up.ights.
6-5
OIL PASSAGE
OIL PASSAGES
Select the 7E 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 insert an air adaptor
into th€ spark plug hole. Pump air into the cylinder
to keep the valv€ closed while cgmpressing springs
and removing the valve keepers.
Position the lever arm under the cross shaft so the
lever is psrpendicular to the shEft and ths compres-
sor attachment rests on toD of the rstainer for th€
spring being compressed. Use the rear position slot
on the lever as shown.
NOTE: Put shop towels over the oil passag€s to
prevent the valve keepers from falling into the cylin-
der h€ad.
(cont'd)

-
'14.
Valve Seals
Replacement (cylinder head removal not required) (cont'dl
'11.Using a downward motion on the lever arm. com-press the valve spring and remove the keepers from
the valve stem. Slowly release pressure on the
spring.
Repeat step l1 for the other valve in that cylinder.
Remove the valve seals (see page 6-22).
Installthe valve seals (see page 6-23).
Install the springs, the retainers and the keepers in
reverse order of removal.
16. Repeat steps 9 to l5 for the other three cylinders.
ExhaGt Valvs Soals
17. 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.
18. Insert the cross shaft through the bottom hole of
the two uprights.
Select the 7/8 in. diameter short compressor attach-ment and fasten the attachment to the No. 4 hole ofthe lever arm with the speed pin supplied.
Position the piston at TDC and insert an air adaptorinto the spark plug hole. Pump air into the cylinder
to keep the valve closed while compressing springs
and removing the valve keepers.
19.
20.
21. Position the lever arm unde. the cross shaft so thelever is perpendicular to the shaft and the compres-
sor attachment rests on top of the retainer for thespring being compressed. Use the rear position sloton the lever as shown.
NOTE: Put shop towels over the oil passages toprevent the valve keepers from falling into the cylin-der head.
Using a downward motion on the lever arm, com-press the valve spring and remove the keepers fromthe valve stem. Slowly release pressure on thespring.
Repeat step 22 for the other valve in that cylinder.
Remove the valve seals (see page 6-22).
Install the valve seals (see page 6-23).
Install the springs, the retainers and the keepers inreverse order of removal.
Repeat steps 20 to 26 on the other three cylinders.
NOTE: Reler to page 6-31 when installing cylinderneao cover.
OIL PASSAGE
27.

Timing Belt
lllustrated Index
NOTE:
. Refer to page 6-12 for positioning crankshaft and pulley before installing belt.
. Mark the direction of rotation on the belt before removing.
. Replace the rubber seals tor oil leakag€ between the cylinder head and cover.
a Do not uss the middle cover and lower cover for storing itsms disassembled.
. Clean the middle cover and lower cover before installation.
CAP NUT6xl.0mm9.8 N'm (1.0 kgf.m,7.2lbtft) WASHER
\oReplaco when damagedor deteriorated.
6x1.0mm
CYLINDER HEAD COVERRefer to pago 6-31 wheninstalling.
RUBBER SEALSReplace when damagedor deleriorsled.
BACK OOVER
lnstallwith concavesurface facing in.Clean.
8 x 1.25 mm37 N.m 13.8 kgl.m,27 lbf'ft)
AD.'USTING BOLT10 x t.25 mm5/r N.m 15.5 kgl.m, ,o lbtft)For adjustrnent only,do not r€move,
BOLT
COVER
6x1.0mm9.8 N'm (1.0 kg{.m. t.2 lbf.tt}
9.8 N,m 11.0 kg{.m,7.2 lbl.frl
Adlustment, pago 6-9Replacement, page 6"10
TIMIMi BELTInspection, page 6-9ALTERNATORBELTAdjustm6nt,Soction 23
CRANKSHAFTPULI"EYRomov6 any oiland clgaa on thgtiming bolt guideplato side.
TIMING BELTDBIVE PULLEYRemove any oiland clean,
LOWEnCOVER
lnstall with concavesurface facing out,Remove any oilano ctean.
NOTE: When installing a new crankshaft and/or new bolt:
O tighten the crankshaft pulley bolt to 196 N'm (20.0 kgf'm, 145 lbf'ft),
O loosen bolt,
O retighten it to 177 N.m (18.0 kgt.m, 130 lbf'ftl.
'14 x 1,25 mmlt7 t{.m 118.0 kgl.m, 130lbtftlReplacsmenl, page 6-8
6-7

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