1994 HONDA INTEGRA Cylinder

Rocker Arms
lnspection
NOTE: When reassembling the
carefully apply air pressure to t
rocker arm.
Inspect the rocker arm piston.- lf it does not move smoot
arm assembly.
xva
V/\'Check piston movement
. Apply oilto the pistons whe
. Bundle the rocker arms wi
keep them together as a set.
PISTONS
) primary rocker arm,
the oil passage of the
Remove the lost motion assembly from the cylinder
head and inspect it. Test it by pushjng the plunger
with your finger.- lf the lost motion assembly does not move
smoothlv, reDlace it.
ROCKER ARMPush
t
SECONDARYLOST MOTION ASSEMBLY
ciston. Push it manually.
smoothly, replace the rocker
when reassembling.
s with a rubber band to
6-62

Rocker Arms
Installation
1. Install the rocker arms in the reverse order ofremoval:
. Valve adjusting locknuts should be loosened andadjusting screw backed off before installation.. The component parts must be reinstalted in theoriginal locations.
2. Installthe lost motion assemblies.
3. Install the rocker arms while insening the rockerarm shaft into the cvlinder head
NOTE: Remove the rubber band after installing therocKer arms.
'/'/
12 mm EOLT
4.Clean and install the rocker shaft orifices with newO-rings. lf the holes in the rocker arm shaft andcylinder head are not in line with each other, screwa 12 mm bolt into the rocker arm shaft and rotatethe shaft.
NOTE: The shapes of the rocker shaft orifices forthe intake and €xhaust are different. The orificesmust be installed in the original locations.
INTAKE ROCKERSHAFT ORIFICEClean.EXHAUST ROCKERSHAFT ORIFICECl6an.
O.RINGBeplace.
Beplace.
6-64

Camshafts
Inspection
4,
5.
9.
1.
Remove the bolts, then remove the camshaft hold-
ers from the cvlinder head.
NOTE: Unscrew the camshaft holder bolts two
turns at a time, in a crisscross pattern.
Lift camshaft out of cylinder head. wipe clean, then
inspect lift ramps. Replace camshaft if lobes are pit-
ted, scored, or excessively worn.
Clean the camshaft bearing surfaces in the cylinder
head. then set camshaft back in place.
Place a plastigage strip across each journal.
Install the camshaft holders, and then tighten the
bolts to the specified torque as shown in the left
column on this page.
NOTE: Do not rotate camshafts during inspection.
Remove the camshaft holders. Measure widest Dor-
tion of plastigage strip on each journal.
Camshaft-to-Holder Oil Clearance:
Standard {New): 0.050 - 0.089 mm
{0.002 - o.Ooil in)
Sswice Limit: 0.15 mm (0.006 in)
(cont'dl
NOTE:
. Do not rotate the camshaft during inspection.
. Remove the rocker arms and rocker shafts.
1. Put the camshafts and camshaft holders on the
cylinder head, and then tighten the bolts to the
soecified torque.
Specified Torque:
O - @: 8 mm bolts 26 N.m {2.7 kgl.m,20 lbt'ftl(D -(D:6 mm bolts 9.8 N.m {1.0 kgt.m, 7.2 lbf'ftl
Seat each camshaft by pushing it toward distributor
end of the cylinder head.
Zero the dial indicator against end of distributor
drive, then push the camshaft back and forth and
read the end play.
Camshaft End Play:
Standard (New): 0.05 - 0.15 mm
10.002 - 0.006 inl
Sawics Limit: 0.5 mm (0.02 inl
oooo@

Gamshafts
Inspection (cont'd)
10, lf camshaft-to-holder oil clearance is out of loler-
ance:
- And camshaft has already been replaced, you
must replace the cylinder head.
- lf camshaft has not been replaced, first check
total runout with the camshaft supported on V-
blocks.
Camehaft Total Runout:
Sisndard (New): 0.015 mm (0.0006 inl
Service Limit: 0.03 mm (0.0012 in)
Rotat€ camshsftwhile measuring
- lf the total runout of the camshaft is within toler-
ance, replace the cylinder head.- lf the total runout is out of tolerance, r€Dlace the
camshaft and recheck. lf the oil clearance is still
out of tolerance. replace the cylinder head.
6-66
IiITAKEEXHAUST
PRIMARY33.i{'l1 mm
(1.3154 inl
33.111 mm(1.3036 in)
MID36.377 mm
l't.4322 inl
35.720 mm
(1.4063 inl
SECONDARY34.547 mm(1.3601 in)
34.381 mm(1.3536 in)
11. Check cam lobe wear.
Clm Lobs Hcight Standard (N.w):
Check this are6 tor wsar.
Crm Porition
INTAKE
MtosEc
CXHAUST
SEC MID PRI
fTt-]--Tt-Tt-l
\ll il il|/



tt ttlLIL__H___}{-}U
ftBftB
T/B: nMING BELTPRI: PRIMAFYMID: MIDSEC: SECONDARY

Valve lnstallation
When installing valves in cylinder head, coat valve
stems with oil before inserting into valve guides, and
make sure valves move up and down smoothly.
When valves and springs are in place, lightly tap the
end of each valve stem two or three times to ensure
proper seating of valve and valve keepers (use ham-
mer handle).
NOTE: Tap the valve stem only along its axis so you
do not bend the stem.
Valves, Valve Springs and
Valve SealsValve Guides
Valve Movement
Measure the guide-to-stem clearance with a dial indica-
tor while rocking the stem in the direction of normal
thrust (wobble method).
lntaks Valvr Stom-to-Guide Clearance:
Standard (Newl: 0.05 - 0.11 mm
{0.002 - 0.OO'l in)
Ssrvice Limit: 0.16 mm (0.006 in)
Exhaugt Vdve Stem-to-Guide Clsarancg:
Standald lNowl: 0.10 - 0.16 mm
(0.00'l - 0.006 in)
Sorvics Limit: 0.22 {0.0m in)
Valve extended 10 mm out from seat.
. lf measurement exceeds the service limit.
recheck using a new valve.
. lf measurement is now within the service limit,
reassemble using a new valve.
. lf measurement still exceeds limit, recheck using
alternate method below, then replace valve and
guide, if necessary.
NOTE: An alternate method ot checking guide to
stem clearance is to subtract the O.D. of the valve
stem. measured with a micrometer, from the l.D. ot
the valve guide, measured with an inside microme-
ter or ball gauge.
Take the measurements in three places along the
valve stem and three places inside the valve guide.
The difference between the largest guide measure'
ment and the smallest stem measurement should
not exceed the service limit.
lntafte Valvs Stom-to-Guida Clearance:
Stardard (Nowl: 0.025 - 0.055 mm(0.0010 - 0.0022 inl
Service Limit: 0.08 mm (0,003 in)
Exhaust Valvo Stem-to-Guide Clearance:
Standard lNew): 0.050 - 0.080 mm
10.0020 - 0.0031 in)
S€rvics Limit: 0.11 mm {0.0oil inl
6-70

1.As illustrated in the removal steps ot this proce-
dure. use a commercially - available air-impact
driver attachment modified to fit the diameter of the
valve guides. In most cases, the same procedure
can be done using the Valve Guide Driver and a
conventional hammer,
COMMCRCIALLY.AVAILABLEVALVE GUIDE DRIVER
az mm +- sz mm{3.43 inl I tz.zt in)
tfr
10.8 mm10.42 inl
5.3 mm(0.21 inl I
_{l
R.mov.l and In3trll.tionVALVE GUIDE DRIVER.5.5 mm07742 - q)101tt0
Select the proper replacement guides and chill
them in the freezer section of a refrigerator for
about an hour.
Use a hot plate or oven to evenly heat the cylinder
head to 300'F (150"c). Monitor the temperature with
a cooking thermometer.
CAUTION:
. Do not us9 a iorch; it may warp ths hsad.
. Do not get ths head hottor than 300"F (150"C);
excsssivo hgat may loogen the valvo soaG.
. To avoid burns, use hsaw glovo3 whon handling
the heated cylindor h€ad.
Working from the camshaft side, use the driver and
an air hammer to drive the guide about 2 mm (0.1
in) towards the combustion chamber. This will
knock off some of the carbon and make removal
easier.
CAUTION:
. Always wear ssfcty gogglos 01 a taca rhiold
whcn using thc air hrmmcr,
. Hold tho.ir hammer diroctly in line with tho
v6lvo goido to prov.nt drmaging tho driv6r.
Turn the head over and drive the guide out toward
the camshaft side of head.
lf a valve guide still won't move, drill it out with a
8.0 mm (5/16 in) bit, then try again.
CAUTION; Drill guid6 only in oxtromc cs3os: you
could dlmsgo tho cylinder hoad if tho guidc brcakr.
VALVE GUIDE DBIVER.5.5 mm07742 - 0010100
6.Remove the new guide(s) from the refrigerator, one
at a time, as vou need them.(cont'd)
l o -_ -\
i oc)

Valve Seats
Reconditioning
Renew the valve seats in the cylinder head using
valve seat cutters.
NOTE: lf guides are worn, replace them before cut-
ting the valve seats.
Carefully cut a 45o seat, removing only enough
materialto ensure a smooth and concentric seat.
Bevel the upper edge of the seat with the 30' cutter
and the lower edge of the seat with the 60'cutter'
Check width of seat and adjust accordingly.
Make one more very light pass with the 45o cutter to
remove anv possible burrs caused by the other cut-
ters.
Valve Seat Width:
Stlndard: 1.25 - 1.55 mm {0.0,19 - 0.061 in)
Ssrvico Limit 2.0 mm 10.08 in)
SEAI wlDTH
After resurfacing the seat, inspect for even valve
seating: Apply Prussian Blue Compound to the
valve face, and insen valve in original location in
thc hea.l. then lift it and snap it closed against the
seat several times.
ACTUAL SEATINGSURFACE
VALVESEAT
PRUSSIAN BLUE
1.
The actual valve seating surface, as shown by the
blue compound, should be centered on the seat.
. lf it is too high (closer to the valve steml, you
must make a second cut with the 60' cutter to
move it down, then one more cut with the 45'
cutter to restore seat width.
. lf it is too low (closer to the valve edge), you
must make a second cut with the 30'cutter to
move it up, then one more cut with the 45" cutter
to restore seat width.
NOTE; The final cut should alwavs be made with
the 45'cuttef.
lnsert intake and exhaust valves in the head and
measure valve stem installed height.
Intake Vllve St€m ln3tslled Hsighl:
Stsndard (Now): 37.'155 - 37.935 mm
(1.4750 - f .il935 in)
Sorvico Limit: 38.185 mm 11.5033 in)
Exhaust Valvo Stom In3talled Hoight:
Standard (Now): 37.165 - 37.6:15 mm
11.4{X}2 - 1.,1817 inr
Sewico Limit: 37.885 (1.i1915 in)
VALVE STEMINSTALLED HEIGHT
8. lJ valve stem installed height is over the service
limit, replace valve and recheck. lf still over the ser-
vice limit. replace cylinder head; the valve seat in
the head is too deeD.
6-73

Gylinder Head
Warpage
NOTE: lf camshaft-to-holder oil clearances (see page
6-65) are not within specification. the head cannot be
.esurfaced.
lf camshaft-to-holder oil clearances are within sDecifica-
tions, check the head for warpage.
Measure along edges. and 3 ways across center.
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 cvlinder head.
Maximum resurface limit is 0.2 mm {0.008 in) based
on a height of 142 mm (5.59 in).
PRECISION STRAIGHT EDGE
Cylindsr Hssd Height:
Standard lNsw): 1i11.95 - 1,f2.05 mm
15.s89 - 5.593 inl
6-74