Cylinder
Block
Inspection
(cont'dl
2. Check the
top of the block for warpage.
Measure along the edges and across
the center as
snown.
SURFACES TO BE MEASURED
Engine Block Warpsgc:
81881 ongine:
Standard
lNewl:
0.07 mm
{0.003
inl max.
Service
Limil: 0.10 mm
{0.00,1inl
B18Cl engine:
Standard
(New):
0.05
mm
10.002
inl max.
Service Limit 0.08
mm
{0.003
inl
Measure cylinder bores
as shown on
page
7-13.
lf
the block
is to be reused, hone the cylinders and
remeasure the bores.
Hone cylinder bores with honing oil and a
fine
(400
grit)
stone
in
a 60 degree
cross-hatch
pattern.
NOTE:
.
Use only a
rigid hone with 400
grit
or finer stone
such
as Sunnen, Ammco, or equivalent.
a
Do not use stones that are
worn or broken.
When
honing is complete, thoroughly clean the
cylinder block
of all metal
panicles.
Wash the cylin-
der bores with hot soapy water, then dry
and oil
immediately to
prevent
rusting.
NOTE: Never use solvent,
it will only redistribute
the
grit
on the
cylinder walls.
lf scoring or scralches are still
present
in cylinder
bores after
honing to the service
limit,
rebore the
engine block.
NOTEr Some light venical scoring and scratching
is
acceptable
if it is not
deep
enough to catch
your
fin-
gernail
and does not
run
the
full length of the bore.
CYLINDER
HONE
.
After honing, clean the cylinder
thoroughly with
soapy water.
.
Only scored or
scratched cylinder bores must be
noneo.
7-14
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