Nissan Teana J32. Instruction — part 502
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< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
• When using undersize (US) bearing, measure the connecting rod bearing inner diameter with bearing
installed, and grind crankshaft pin so that the connecting rod bearing oil clearance satisfies the standard.
CAUTION:
In grinding crankshaft pin to use undersize bearings, keep the
fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].
Main Bearing
INFOID:0000000003802299
WHEN NEW CYLINDER BLOCK AND CRANKSHAFT ARE USED
1.
“MAIN BEARING SELECTION TABLE” rows correspond to
bearing housing grade on rear left side of cylinder block.
2.
“MAIN BEARING SELECTION TABLE” columns correspond to
journal diameter grade on front side of crankshaft.
3.
Select main bearing grade at the point where selected row and column meet in “MAIN BEARING SELEC-
TION TABLE”.
4.
Apply sign at crossing in above step 3 to “MAIN BEARING GRADE TABLE”.
NOTE:
• “MAIN BEARING GRADE TABLE” applies to all journals.
• Service parts is available as a set of both upper and lower.
WHEN CYLINDER BLOCK AND CRANKSHAFT ARE REUSED
1.
Measure cylinder block main bearing housing inner diameter and crankshaft main journal diameter. Refer
to
2.
Correspond the measured dimension in “Cylinder block main bearing housing inner diameter” row of
“MAIN BEARING SELECTION TABLE”.
Bearing under-
size table
: Refer to
JPBIA0216ZZ
SEM756G
A
: Journal diameter grade No. 1
B
: Journal diameter grade No. 2
C
: Journal diameter grade No. 3
D
: Journal diameter grade No. 4
E
: Pin diameter grade No. 1
F
: Pin diameter grade No. 2
G
: Pin diameter grade No. 3
H
: Pin diameter grade No. 4
I
: Pin diameter grade No. 5
J
: Pin diameter grade No. 6
K
: Identification code
JPBIA0269ZZ
HOW TO SELECT PISTON AND BEARING
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< DISASSEMBLY AND ASSEMBLY >
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3.
Correspond the measured dimension in “Crankshaft main journal diameter” column of “MAIN BEARING
SELECTION TABLE”.
4.
Follow step 3 and later in “When New Cylinder Block and Crankshaft are Used”.
MAIN BEARING SELECTION TABLE
MAIN BEARING GRADE TABLE (ALL JOURNALS)
UNDERSIZE BEARING USAGE GUIDE
• When the specified main bearing oil clearance is not obtained with standard size main bearings, use under-
size (US) bearing.
• When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and
grind main journal so that the main bearing oil clearance satisfies the standard.
CAUTION:
PBIC5332E
Main bearing grade table (All journals)
: Refer to
.
EM-134
< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
In grinding crankshaft main journal to use undersize bearings,
keep the fillet R (A) [1.5 - 1.7 mm (0.059 - 0.067 in)].
Bearing undersize
table
: Refer to
JPBIA0216ZZ
SERVICE DATA AND SPECIFICATIONS (SDS)
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< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Specification
INFOID:0000000003802300
GENERAL SPECIFICATIONS
Engine
VQ25DE
VQ35DE
Cylinder arrangement
V-6
Displacement
cm
3
(cu in)
2,495 (152.24)
3,498 (213.45)
Bore and stroke
mm (in)
85.0 x 73.3
(3.346 x 2.886)
95.5 x 81.4
(3.760 x 3.205)
Valve arrangement
DOHC
Firing order
1-2-3-4-5-6
Number of piston rings
Compression
2
Oil
1
Number of main bearings
4
Compression ratio
9.8
10.3
Compression pressure
kPa (bar, kg/cm
2
, psi)/300 rpm
Standard
1,275 (12.8, 13.0, 185)
Minimum
981 (9.8, 10.0, 142)
Differential limit between cylinders
98 (1.0, 1.0, 14)
Cylinder number
Valve timing
(Valve timing control - “OFF”)
Unit: degree
a
b
c
d
e
f
VQ25DE
240
244
−
6
58
8
52
VQ35DE
240
260
−
10
70
10
50
SEM713A
PBIC0187E
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