1997 ACURA NSX engine oil

Crankshaft

Installation

Before installing the crankshaft, apply a coat of

engine oil to the main bearings and rod bear-

ings.

1. Insert bearing halves in the engine block and con-

necting rods.

2. Lower the crankshaft into the block.

THRUST WASHERS

Grooved sides face outward.

3. Install the thrust washers on the No. 3 journal. Oil

thrust washer surfaces.

4. Install the bearings and caps. Tighten 9 x 1.25 mm

cap bolts to the specified torque.

Torque: 39 N-m (4.0 kgf-m, 29 Ibf-ft)

TIMING BELT

PULLEY SIDE

JOURNAL NUMBERS
NOTE:

• Guide the piston carefully to prevent damage.

• Fit long rubber hoses (about 30 cm long) to con-

necting rod bolts to protect the crankshaft.

• Install the pistons after setting the crankshaft to

BDC for each cylinder.

CORRECT

INCORRECT

RUBBER HOSES

8 x
0.75
mm

20 N-m (2.0 kgf-m, 14 Ibf-ft)

after turn to 116°

MARK

• Line up the marks when installing connecting

rod
cap.
BEARING CAP

WASHERS

BEARING CAPSProCarManuals.com

Crankshaft
Installation (cont'd )
5. Chec k th e ro d bearin g clearanc e wit h plastigag e
(se e pag e 7-7 ), the n torqu e th e connectin g ro d ca p
nuts .
NOTE : Referenc e number s o n connectin g rod s ar e fo r
big-en d bor e toleranc e an d d o NO T indicat e th e posi -
tio n o f pisto n i n engine .
CONNECTIN G RO D CA P NU T TORQUIN G
METHO D
1 ) Torqu e th e connectin g ro d ca p nu t t o 2 0 N- m
(2. 0 kgf-m , 1 4 Ibf-ft ) wit h a beam-typ e torqu e
wrench .
2 ) Instal l a torqu e angl e gaug e t o th e ca p nut , the n
tur n th e ca p nu t 11 6 degrees .
Snap-onTA360 o requivalen t
BEARING CAP BOLTS TORQUE SEQUENCE
6 . Instal l th e bearin g ca p bridge , an d tighte n 1 1 x 1. 5
m m bolt s t o th e specifie d torqu e diagonall y out -
war d fro m th e center .
Torque : 6 5 N- m (6. 6 kgf-m , 4 8 Ibf-ft )
7 . Tighte n ca p sid e bolt s (1 0 x 1.2 5 mm ) t o th e
specifie d torque .
Torque : 4 9 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
• Coa t th e bol t threa d an d sea t surfac e wit h
engin e oil .
NOTE : Th e shorte r sid e bolt s ar e fo r th e fron t side .
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BEARING CA P
BRIDG E
CAP BRIDG E BOL T
11 x 1. 5 m m65 N- m (6. 6 kgf-m ,
4 8 Ibf-ft )
SID E BOL T
10 x 1.2 5 m m49 N- m (5. 0 kgf-m ,
3 6 Ibf-ft ) CA
P BOL T
9 x 1.2 5 mm39 N- m (4. 0 kgf-m ,
2 9 Ibf-ft )
8. Appl y liqui d gaske t t o th e bloc k matin g surfac e o f
the lef t sid e cove r an d oi l pum p case , an d instal l
them o n th e engine block.
NOTE : Th e sea l surfac e o n th e bloc k shoul d b e
dry . Appl y a ligh t coa t o f oi l t o th e crankshaf t an d
t o th e li p o f seal .
LEF T SIDE :
Apply liqui dgaske t t o bloc kmatin g surface .
LEFT SID E COVE R
SPECIA L BOLT S6 x 1. 0 m m12 N- m (1. 2 kgf-m ,8.7 Ibf-ft )Replace .
OIL PUM P SIDE :
6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
BAFFL E PLAT E OI
L SCREE N
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
OI L PAS S
PIPE
OIL PUM PApply liqui dgaske t t o bloc k
matin g surfaces .
NOTE:
SPECIA L BOLT S6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
Replace .
SPECIAL BOLT S8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,16 Ibf-ft )
Replace .
• Us e liqui d gasket . Par t No . 0871 8-000 1 o r 0871 8
- 0003 .
• Chec k tha t th e matin g surface s ar e clea n an d
dry befor e applyin g liqui d gasket .
• Appl y liqui d gaske t evenly , bein g carefu l t o cove r
all o f th e matin g surface .
• T o preven t leakag e o f oil , appl y liqui d gaske t t o
th e inne r thread s o f th e bol t holes .
DOWE L PI N
DOWE L PI N
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Engine Lubricatio n
Illustrated Index
NOTE:
• Us e ne w O-ring s whe n reassembling .
• Appl y oi l t o O-ring s befor e installation .
• Us e liqui d gasket , Par t No . 0871 8-000 1 o r 0871 8-
0003 .
• I f th e botto m o f th e oi l pa n i s deformed , i t shoul d b e
repaire d o r th e oi l pa n shoul d b e replace d t o retai n
prope r clearanc e betwee n th e scree n an d th e bottom .
OIL CONTRO L ORIFIC ERemove wit h 6 m m
bol t an d clean .
O-RIN GReplace .
OIL FILTE R BAS EIllustrate d Index ,
pag e 8-1 2
OIL FILTE ROne tur n o r22 N- m (2. 2 kgf-m ,16 Ibf-ft )Replacemen t 8- 5
OI L PUM P
Illustrate d index , pag e 8- 7
Inspection , pag e 8 -8
Appl y liqui d gaske t t o
matin g surfac e o f engin e block .
OIL PA N GASKE TReplace.
OIL PA N• D o no t defor m
th e bottom .
• Refe r t o pag e 8-1 0whe n installing .
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Engine Oil

Inspection

1. Check engine oil with the engine off and the car

parked on level ground.

2. Make certain that the oil level indicated on the

dipstick is between the upper and lower marks.

3. If the level has dropped close to the lower mark,

add oil until it reaches the upper mark.

CAUTION: Insert the dipstick carefully to avoid

bending it.ProCarManuals.com

Replacement

CAUTION: Remove the drain plug carefully while the en-

gine is hot, the hot oil may cause scalding.

1. Warm up the engine.

2. Drain the engine oil.

3. Reinstall the drain plug with a new washer, and refill

with the recommended oil.

NOTE: Under normal conditions, the oil filter should be

replaced at every other oil change. Under severe condi-

tions, the oil filter should be replaced at each oil change.ProCarManuals.com

Oil Filte r
Replacemen t
CAUTION: Loose n th e oi l filte r carefull y whil e th e
engin e is hot , the hot oi l ma y cause scalding .
1 . Remov e th e oi l filte r wit h th e specia l too l a s shown .
OIL FILTE R WRENC H07912-611000 1Torque: On e tur n(22 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
2. Inspec t th e thread s an d rubbe r sea l o n th e ne w filter .
Wip e of f th e sea t o n oi l filte r base , the n appl y a ligh t
coa t o f oi l t o th e rubber seal an d instal l th e filter .
3 . Afte r th e rubbe r sea l i s seate d agains t th e base ,
tighte n th e oi l filte r b y turnin g i t approximatel y on e
turn .
Torque : On e tur n (2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
4 . Star t th e engine , an d chec k th e filte r fo r oi l leakage .
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Oil Pressur e
Testing
If th e oi l pressur e warnin g ligh t stay s o n wit h th e engin e
running , chec k th e engin e oi l level . I f th e oi l leve l i s
correct :
1 . Remov e th e engine oil pressur e switch , an d instal l
a n oi l pressur e gauge .
2 . Star t th e engine . Shu t i t of f immediatel y i f th e
gaug e register s n o oi l pressure . Repai r th e proble m
before continuing .
3. Allo w th e engin e t o reac h operatin g temperatur e
(fa n come s o n a t leas t twice) . Th e pressur e shoul d
be:
Engin e Oi l Pressure :
A t Idle : 7 0 kP a (0. 7 kgf/cm2,1 0 psi )
minimu m
A t 3,00 0 rpm : 34 0 kP a (3. 5 kgf/cm
2, 5 0 psi )
minimu m
• I f oi l pressur e i s withi n specifications , replac e th e
oi l pressur e sende r an d recheck .
• I f oi l pressur e i s NO T withi n specifications , inspec t
th e oi l pum p (se e pag e 8-8 ).
ENGIN E OI L PRESSUR ESWITCHMOUNTIN G HOL E
OIL PRESSUR E GAUG EADAPTO R(1/8"-28, BSPT )
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