1994 HONDA INTEGRA camshaft

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

Standards and Service Limits
Cylander Head/Valve Train (B18Cl enginelSection 6
': M€asured betwoon the camshatt and rcc(er srm.
NH: NIHON HATSUJO manufacture v6lve spring
CH: CHUO HATSUJO manufscturo v6lve spring
MEASUBEMENTSTA]TDARD INEWISERV|C€ UM|T
Compr€6sion250 rpm and wide op€n throttle Nomin6l
kPa lkgl/cmr, psi) Minimum
Maximum variation
1,860 (19.0, 270)
930 (9.s, 140)
200 t2.o,2a)
Cylind6r hoadWarpage
H6ight'r41.95 - 1C2.05 (5.s89 - 5.593)
0.05 {0.002)
C.mshsftEnd play
Camshaft-to-holdsr oil clearance
Total runout
Cam lobo height lN Primery
Mid
Socondary
EX Primary
Mid
Secondary
0.05 - 0.1s (0.002 - 0.006)
0.050 - 0.089 (0.0020 - 0.0035)
0.015 (0.0006) max.
33.411{1.3154)
36.377 tl.13221
34.547 (1.3601)
33.1110.3036)
35.72011.4063)
34.381 {1.3536)
0.5 (0.02)
0.15 {0.006)
0.03 (0.001)
Valvo clorrance lcoldl* lN
EX
Valve stem O.D. lN
EX
Stom-to-guid6 clerrsnco lN
EX
0.15 - 0.19 {0.006 - 0.007}
0.17 - 0.21 (0.007 - 0.008)
5.475 - 5.48s (0.2156 - 0.21591
5.450 - 5.460 (0.2146 - 0.21s0'
0.025 - 0.055 {0.00'10 - 0.0022}
0.050 - 0.080 (0.0020 - 0.0031)
5.11510.21441
s.420 {0.2134)
0.08 10.003)
0.11{0.(x)4)
Valvo seatWidth tN
EX
Sr6m installed h€ight lN
EX
1.25 - 't.5s (0.049 - 0.06't)'1.25 - 1.s5 {0.049 - 0.061)
37.465 - 37.935 ('1.4750 - 1.4935)
37.16s - 37.635 t1.4632 - 1.4817)
2.0 (0.08)
2.0 (0.08)
38.185 (1.5033)
37.885 (1.491s)
Valv€ BpringFre6length (Roferenca) lN Outer
Inner NH
CH
EX NH
CH
41.05 (r.6161
36.'16 {1.4241
36.19 t1.425)
41.96 (1.652)
41.94 {1.651)
40.26 (1.585)
35.30 (1.390)
35.30 (1.390)
40.95 (1.612)
40.95 (1.612)
Valve guidol.D. tN
EX
Instslled hoight lN
EX
5.51 - 5.53 (0.217 - 0.218)
5.5r - 5.53 {0.2r7 - 0.218)
12.55 - r3.0s (0.494 - 0.514)
12.55 - 13.05 (0.494 - 0.s14t
5.55 (0.219)
5.5s {0.219}
Rock€r ermArm-to-shaft clearance lN
EX
0.025 - 0.0s2 {0.0010 - 0.0020)
0.025 - 0.0s2 (0.0010 - 0.0020)
0.08 (0.003)
0.08 (0.003)
3-4

Valve Clearance
Adjustment lcont'dl
a
4.
Adjust valve clearances on No. 1 cylinder.
lntlkc: 0.08 - o.l2 mm (o.(Xxl - 0.qr5 in)
Exhru3t 0.16 - 0.20 mm {0.0,05 - 0.008 in}
Loosen lhe locknut and turn the adjusting screw
until feeler gauge slides back and fonh with a slight
amount of drag.
LOCKNUT9x0.?5mm25 N.m 12,5 kgf.m, 18lbt'ft|
6.
Tighten the locknut and recheck clearance again.
Repeat adjustment if necessary.
Rotate ths crankshaft 180" counte.clockwise(camshaft pulley turns 90'). The "UP" mark should
be on the exhaust side. Adjust valves on No. 3 cylin-
der.
I{umbcr 3 pidon !t TDC:
EXHAUST CAITISHAFTPULI,IY
INTAKE CAMSHAFTPULLEY
.UP' MANKS
7. Rotate the crankshaft 180'counterclockwis€ to
bring No. 4 piston to TDC. The'UP" mark should
be pointing straight down. Adjust valves on No. 4
cylinder.
Numb€r il piston at TDC:
8. Rotate the crankshaft 180' co u nie rclockwise to
bring No. 2 piston to TDC. The "UP" mark should
be on the intake side. Adjust valves on No. 2 cylin-
oer.
Numbor 2 pirton !t TDC:
NOTE: Refer to page 6-31 when installing cylindor hEEd
cover.
"UP'MARKS
-UP" MARKS

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
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

Timing Belt
Installation
Install the timing belt in the revorce order of removal;
Only key points are described here,
NOTE: Cl€an the middle cover and lower cover beforeinstallation.
L Position the crankshaft and th€ camshaft pulleys asshown before installing the timing belt.
A. Set the crankshaft so that the No. 1 oiston is at
top dead center (TDC). Align the g.oovo on the
t€eth side of the timing belt d.ive pulley to the Opointer on the oil pump.
L Align the TDC marks on intake and exhaust pul-
tevs,
NOTE: To set the camshafts at TDC position for
No. 1 piston, align the holes in the camshafts
with the holes in No. l camshaft holders andinsert 5,0 mm pin punches in the holes.
PIN PUNCHES, 5.0 mm
2. lnstall the timing belt tightly in the sequence
snown.
O timing belt drive pulley {crankshaft) + @Adjusting pulley * @ Water pump pulley - @Exhaust camshaft pulley + @ Intake camshaft pul-
lev.
TDC mark align6d with thepointer on back cover,TDC MARK
6-12

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