1998 ACURA INTEGRA cross

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-'

Cylinder Head
Wapage
NOTE: lf camshaft-to-holder oil clearances (see page 6
22) arc nol within specification, the head cannot be
resurfaced.
lf camshaft-to-holder oil clearances are within specifica-
tions, check the head for warpage.
lf warpage is less than 0.05 mm (0.002 in) cylinder
head resurfacing is not required.
lf warpage is between 0.05 mm (0.002 in) and 0.2 mm
(0.008 in). resurface cylinder head.
Maximum resurface limit is 0.2 mm (0.008 in) based
on a height of 132.0 mm (5.20 in).
Measure along edges, and 3 ways across center.
Cylinder Head Height:
Standard lNewl: 131.95 - 132.05 mm(5.195 - 5.199 inl
lnstallation
Install the cylinder head in the reverse order of removal:
NOTE:
. Always use a new head gasket.
. Cylinder head and cYlinder block surface must be
clean.
. "UP" mark on the camshaft pulleys should be at the
to p.
. Do not use the middle cover and lower cover for stor-
ing removed items.
. Clean the middle cover and lower cover before instal-
lation.
. Replace the washer when damaged or deteriorated
L Cylinder head dowel pins and the oil control orifice
must be aligned.
. When hand'ing a metal gasket, care should be
taken not to fold it or damage the contact surface
of the gasket.
. Clean the oil control orifice when installing,
OIL CONTROLORIFICE
PRECISION STRAIGHT EDGE
6.30
CYLINDER HEAD GASKET
{3 LAYERS OF METAL)
DOWEL
Tighten the cylinder head bolts in two steps. In the
tirst step tighten all bolts, in sequence, to about 29
N.m (3.0 kgf.m,22 lbf.ft); in the final step. tighten in
lhe same sequence to 85 N.m (8.7 kgnm,63 lbf.ft).
NOTE:
. Apply engine oil to the cylinder head bolts and
the washers.
. Use the longer bolts at positions No. 1 and No. 2
as snown,
CYLINDER HEAD BOLTS TOROUE SEOUENCE
\.l
tNOTE: Put longer bolts here.
t-

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Install the intake manifold and tighten the nuts in acflsscross pattern in 2 or 3 steps. beginning with theinner nuts.
CAUTION: Check lor folds or scratches on the sur-face ol the gasket. Replace with a new gasket ildamaged.GASKETReplace.
INTAKEMANIFOLD
4. Tighten the intake manifold bracket bolts.5. Install the exhaust maniiold and tighten the newself-locking nuts in a crisscross pattern in 2 or 3steps, beginning with the inner nuts.. Use new self-locking nuts.
EXHAUSTMANIFOLD
GASKETReplace.
4
10 x 1.25 mm 8 x 1.25 mm4,{ N.rn 14.5 kgf.m, 24 N.m {2.4 kgtm,33 tbf.ftl '17 tbf.ft)
SELF.LOCKING NUT8 x 1.25 mm31 N.m (3.2 kgt m,23 lbf.ft)Replace.1 .25 mmN.m {2.4 kg{.m,rbrftt
\q
8x2417
",', r, ^-'-"-!,1,,,';-21N.m l2.1kglm, 23 N.m (2.3 ksf.m,17lbf.ftl 17 tbf.ftr
6-31
CAUTION:
. Make sure that the keyways on the camshafts aretacing up and No. 1 piston is at top dead cenier
tTDCt.. Replacethe rocker arms in their original positions.
6. Place the rocker arms on the pivot bolts and thevalve stems.
7.
8.
Install the camshafts, then install the camshaft sealswith the open side (spring) facing in.
Apply liquid gasket to the head mating surfaces otthe No. 1 and No. 6 camshaft holders, then installthem, along with No.2,3, 4, and 5.
NOTE:
. "l" or "E' marks are stamped on the camshaftholders.
. Do not apply oil to the holder mating surface ofcamshaft seals.. Apply liquid gasket to the shaded areas.. The arrows marked on the camshaft holdersshould point to the timing belt.. Clean and dry the cylinder head mating surfacesbefore applying liquid gasket.
INTAKE CAMSHAFT HOLDERS
No.6 No.5No.4No.3 No.2 No. 1
{cont'd)

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Main Bearings
Clearance
2.
3.
1.
4.
To check main bearing-to-iournal oil clearance,
remove the main caps and bearing halves.
Clean each main iournal and bearing half with a
clean shop towel.
Place one strip of plastigage across each main iour-
na l-
NOTE: lf the engine is still in the car when you bolt
the main cap down to check clearance, the weight
of the crankshaft and flywheel will flatten the plasti'
gage further than just the torque on the cap bolt,
and give you an incorrect reading. For an accurate
reading, support the crank with a jack under the
counterweights and check only one bearing at a
trme.
Reinstall the bearing caps and cap bridge (B18C1,
B18C5 engines only)then torque the bolts.
Bl8Bl engine: 77 N'm (7.8 kgt.m.56lbf.ft)
B18Cl,818C5 engines:
No. 1,5 cap bolts 73 N.m (7.4 kgf.m,56lbnftl
No. 2. 3, 4 cap bolts 64 N.m {6.5 kgf m. 49 lbf ftl
NOTE: Do not rotate the crankshaft during inspec-
tro n.
Remove the cap bridge (818C1, 818C5 engines
only), caps and bearings again, and measure the
widest part of the plastigage.
Main Bearing-to-Journal Oil Clearance:
Standard lNew):
No. 1, 2, 4, 5: 0.024 - 0.042 mm
10.0009 -0.0017 in)
Service Limit:0.050 mm (0.0020 in)
No.3:0.030 - 0.048 mm
10.0012 - 0.0019 inl
Service Limit:0.060 mm {0.0024 inl
PLASTIGAGE STRIP
lf the plastigage measures too wide or too narrow,
{remove the engine if it's still in the car), remove the
crankshaft, and remove the upper half of the bear-
ing. lnstall a new, complete bearing with the same
color code (select the color as shown in the right
column), and recheck the clearance.
CAUTION: Do not file, shim. or scrape the bearings
or the caps to adiust clearance.
lf the plastigage shows the clearance is still incor-
rect, try the next larger or smaller bearing (the color
listed above or below that one), and check again.
NOTE: lf the oroDer clearance cannot be obtained
by using the appropriate larger or smaller bearings.
reolace the crankshaft and start over.
Selection
CAUTION: lf the codes ale indecipherable because of
an accumulation oI dirt and dust, do not scrub them
with a wire bru6h or scraper. Clean lhem only with sol-
vent or detergent.
Crankshaft Bore Code Location
Letters have been stamped on the end of the block as a
code for the size of each of the 5 main iournal bores
Use them, and the numbers or bars stamped on the
crank {codes for main journal size), to choose the correct
Dean nqs,
FLYWHEEL END
Main JouhalCode Locations (Numbe.s or Bars)
Bearing ldentif ic.tionColor code ison the edge ofthe bearing.
Larger crank bore
acD
"""""""" Smallerbearingithicker)
Green
Elack
B'ownBlackElue
Smaller Smallermain bearingjournal lthacker)

I
IConnecting Rod Bearings
Clearance
1. Remove the connecting rod cap and bearing half.2. Clean the crankshaft rod journal and bearing halfwith a clean shop towel.
3. Place the plastigage across the rod journal.
4. Reinstall the bearing half and cap, and torque thenuts (818C5 engine: see page 7-19).
81881 engine:31 N.m (3.2 kgnm,23 tbf.ftl
Bl8Cl engine:44 N.m (4.5 kgl.m.33 tbl.ft)
NOTE: Do not rotate the crankshaft during inspection.
Connecting Rod Bearing-to-Journal Oil Clearance:81881 engine:
Standard {Newl: 0.020 - 0.038 mm
{0.0008 - 0.0015 inl
Service Limit: 0.050 mm {0.0020 inl
818C1 engine:
Standald {Newl: 0.032 - 0.050 mm
10.0013 - 0.0020 in)
Service Limit: 0.060 mm {0.0024 in}
B18C5 engine:
Standard lNew): 0.038 - 0.050 mm(0.0015 - 0.0020 inl
Service Limit: 0.060 mm t0.0024 inl
lf the plastigage measures too wjde or too narrow,remove the upper half of the bearjng, install a new,complete bearing with the same color code (select
the color as shown in the rig ht column), andrecheck the clearance.
CAUTION: Do not file, shim, or scrape the bearingor the caps to adiust clearance.
It the plastigage shows the clearance is still incorrect,try the next larger or smaller bearing (the color listedabove or below that one), and check clearance again.
NOTEr It the proper clearance cannot be obtainedby using the appropriate larger or smaller bearings,replace the crankshaft and stan over.
Selection
CAUTION: lf the codes are indecipherable because ofan accumulation of dirt and dust, do not scrub themwith a wire brush or scraper. Clean them only with sol-vent or delergent.
Connecting Rod Code Location
A number has been stamped on the side of each con-necting rod as a code for the size of the big end. Use it,and the letters stamped on the crank lcodes for rod iour-nal size), to choose the correct bearinqs.
Connecting Rod Journal Code Loc.tions {Letters or Bers)
Beering ldentification
23
Y"rl.:_,
Gie& ,
!**
i:1"
BlackBlue
Color code ison the edge oIthe bearing.Larger big end bore
Smaller bearing (th rche.)
lHll
I F;;lll
lL".;|l
Smaller Smallerrod bearing
iournal (thicker)
Half ot number isstamped on bearingcap and the otherhalf is stamped onrod.
PLASTIGAGE STRIP

Cylinder Block
Inspection
1. Measure wear and taper in direction
three levels in each cylinder as shown.
XandYat
{0.24 in}6mm
tFirst
Second
ThirdMeasurement
6 mm 10.24 in)
CYLINDER BORE GAUGE
Cylinder Bore Size:
Standard (N€w): 81.00 - 81.02 mm
(3.189 - 3.190 inl
Service Limit: 81.07 (3.192 inl
Oversize:
0.251 81.25 - 41.27 mm 13.199-3.200 inl
Bore Taoer:
S€rvice Limit: lDifference betwcen first and third
measu;ement) 0.05 mm (0.002 inl
. lf measurements in any cylinder are beyond
Oversize Bore Service Limit, replace the block.
. lf the block is to be rebored, reler to Piston
Clearance Inspection (see page 7-16) after rebor-
I ng.
NOTE: Scored or scratched cylinder bores must be
noneo,
Reboring Limit: 0.25 mm (0.01 inl
ll
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Check the top oI the block for warpage.
Measure along the edges and across the center as
sh own.
SURFACES TO 8E MEASURED
Engine Block Warpage:
B188l engine:
Standard {New}: 0.07 mm (0,003 inl max.
Service Limit: 0.10 mm {0.004 in)
818C1, 818C5 engines:
Standard (Newl:0.05 mm 10.002 inl max.
Service Limit: 0.08 mm (0.003 in)
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LC
'/rz
PRECISION STRAIGHT EDGE

11
Bore Honing
l/easure cylinder bores as shown on page 7-14.lf the block is to be reused, hone the cylinders andremeasure the bores.
Hone cylinder bores with honing oil and a fine (400
grat) stone in a 60 degree cross-hatch pattern.
NOTE:
. Use only a rigid hone with 400 grit or finer stonesuch as Sunnen, Ammco, or equivalent.a Do not use stones that are worn or oroKen.
When honing is complete, thoroughly clean thecylinder block of all melal particles. Wash the cylin-der bores with hot soapy water, then dry and oilimmediately to prevent rusting.
NOTE: Never use solvent, it wili only redistribute
the grit on the cylinder walls.
lf scoring or scratches are still present in cylinderbores after honing to the service limit, rebore theengine block.
NOTE: Some light vertical scoring and scratching isacceptable if it is not deep enough to catch your fin-gernail and does not run the full length ofthe bore.
NOTE:
. After honing, clean the cylinder thoroughly withsoapy water.o Only scored or scratched cylinder bores must behoned.
4.
7-15

Pressure Plate
Removal/lnspectaon
1. Check the diaphragm spring fingers for height us-
ing the special tools and a feeler gauge.
Standsrd (New): 0.6 mm (0.02 in) max.
Service Limit: 0.8 mm {0.03 in)
07NAF-PR3010007936-3710100
lf the height is more than the service limit, replacethe hro..rr.a nlefe
2. Install the special tools.
CLUTCH ALIGNMENT SHAFT07NAF -PR30100
HANDLE
RING GEAR HOLDER07LAB- PVOo'l0O oro7924-PD20003
07936 - 3710100
PRESSURE PLATE
GEAR HOLDER
ADJUSTER NUT
3.
ADJUSTER BOLT
BOLT
WASHER
To prevent warping, unscrew the pressure plate
moi.rnting bolts in a crisscross pattern in several
steps, then remove the pressure plate.
FEELER GAUGECLUTCH ALIGNMENT DISCOTJAF_PM7011A
5.
6.
Inspect the pressure plate surface for wear, cracks,
and burning.
Inspect the fingers of the diaphragm spring for wear
at the release bearing contact area.
DIAPHRAGM SPRING
PRESSURE PLATE
Inspect for warpage using a straight edge and teel-
er gauge.
NOTE: Measure across the pressure plate at three
points.
Standard {New}: 0.03 mm {0.001 inl max.
Service Limit:0.15 mm (0.006 in)
lf the warpage is more thah the service limit,
replace the pressure plate.
STRAIGHT EDGE
2-7