Main Bearings; Clearance; Selection; Crankshaft Bore Code Location - Acura Integra 1998 Service Manual

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Main Bearings
Clearance
2 .
3 .
1 .
4.
T o c h e c k m a i n b e a r i n g - t o - i o u r n a l o i l c l e a r a n c e ,
r e m o v e t h e m a i n c a p s a n d b e a r i n g h a l v e s .
C l e a n e a c h m a i n i o u r n a l a n d b e a r i n g h a l f w i t h a
clean shop towel.
Place one strip of plastigage across each main iour-
n a 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'
g a g e f u r t h e r t h a n j u s t t h e t o r q u e o n t h e c a p b o l t ,
and give you an incorrect reading. For an accurate
r e a d i n g , s u p p o r t t h e c r a n k w i t h a j a c k u n d e r t h e
c o u n t e r w e i g h t s a n d c h e c k o n l y o n e b e a r i n g a t a
t r m e .
R e i n s t a l l t h e b e a r i n g c a p s a n d c a p b r i d g e ( B 1 8 C 1 ,
B 1 8 C 5 e n g i n e s o n l y ) t h e n t o r q u e t h e b o l t s .
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-
t r o n .
R e m o v e t h e c a p b r i d g e ( 8 1 8 C 1 , 8 1 8 C 5 e n g i n e s
o n l y ) , c a p s a n d b e a r i n g s a g a i n , a n d m e a s u r e t h e
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)
N o . 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
c o l o r c o d e ( s e l e c t t h e c o l o r a s s h o w n i n t h e r i g h t
c o l u m n ) , a n d r e c h e c k t h e c l e a r a n c e .
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
U s e t h e m , a n d t h e n u m b e r s o r b a r s s t a m p e d o n t h e
crank {codes for main journal size), to choose the correct
Dean nqs,
FLYWHEEL END
Main JouhalCode Locations (Numbe.s or Bars)
Bearing ldentif ic.tion
Color code is
on the edge of
the bearing.
Larger crank bore
a
c
D
" " " " " " " "
S m a l l e r b e a r i n g i t h i c k e r )
G r e e n
E l a c k
B ' o w n
B l a c k E l u e
S m a l l e r S m a l l e r
m a i n b e a r i n g
j o u r n a l
l t h a c k e r )