2011 NISSAN LATIO engine

EM-212
< SERVICE INFORMATION >[MR18DE]
CYLINDER BLOCK
How to Select Piston and Bearing
INFOID:0000000005931034
DESCRIPTION
• The identification grade stamped on each part is the grade for the dimension measured in new condition.
This grade cannot apply to reused parts.
• For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values of each selection table.
• For details of the measurement method of each part, the reuse standar ds and the selection method of the
selective fitting parts, follow the applicable procedures.
HOW TO SELECT PISTON
When New Cylinder Block is Used
• Check the cylinder bore grade on rear left side of cylinder block (L), and select piston of the same grade.
• If there is a correction stamp mark on the cylinder block, use it as a
correct reference.
When Cylinder Block is Reused
1. Measure the cylinder bore inner diameter. Refer to EM-219, "Inspection After Disassembly".
2. Determine the bore grade by comparing the measur ement with the values under the cylinder bore inner
diameter of the “Piston Selection Table”.
Selection points Selection parts Selection itemsSelection methods
Between cylinder block and
crankshaft Main bearing
Main bearing grade (bearing
thickness) Determined by match of cylin-
der block bearing housing
grade (inner diameter of hous-
ing) and crankshaft journal
grade (outer diameter of jour-
nal)
Between crankshaft and con-
necting rod Connecting rod bearing
Connecting rod bearing grade
(bearing thickness) Combining service grades for
connecting rod big end diame-
ter and crankshaft pin outer di-
ameter determine connecting
rod bearing selection.
Between cylinder block and pis-
ton Piston and piston pin assembly
(piston is available together with
piston pin as an assembly.)Piston grade (piston outer diam-
eter)
Piston grade = cylinder bore
grade (inner diameter of bore)
A : Correction stamp
B : Standard stamp
C : Cylinder No. 1 bore grade
D : Cylinder No. 2 bore grade
E : Cylinder No. 3 bore grade
F : Cylinder No. 4 bore grade
G : No. 1 main bearing housing grade
H : No. 2 main bearing housing grade
I : No. 3 main bearing housing grade
J : No. 4 main bearing housing grade
K : No. 5 main bearing housing grade
: Engine front
PBIC3264J
Revision: May 2010 2011 Versa

EM-216
< SERVICE INFORMATION >[MR18DE]
CYLINDER BLOCK
1. “Main Bearing Selection Table” rows correspond to main bearing
housing grade on rear left side of cylinder block (L).
• If there is a correction stamp mark on cylinder block, use it asa correct reference.
2. Apply main journal diameter grade stamped on crankshaft front side to column in the “Main Bearing Selection Table”.
3. Read the symbol at the cross point of selected ro w and column in the “Main Bearing Selection Table”.
CAUTION:
There are two main bearing selection tables. One is for No. 1, 4 and 5 journals and the other is for
No. 2 and 3 journals. Make certain to use the approp riate table. This is due to differences in the
specified clearances.
4. Apply the symbol obtained to the “Main Bearing Grade Table” to select main bearing. NOTE:
Service part is available as a set of both upper and lower.
When Cylinder Block and Crankshaft are Reused
1. Measure the dimensions of the cylinder block ma in bearing housing inner diameter and crankshaft main
journal diameter individually. Refer to EM-219, "
Inspection After Disassembly" and EM-219, "Inspection
After Disassembly".
2. Apply the measured dimension to the “Main Bearing Selection Table”.
3. Read the symbol at the cross point of selected ro w and column in the “Main Bearing Selection Table”.
CAUTION:
There are two main bearing selection tables. One is for No. 1, 4 and 5 journals and the other is for
No. 2 and 3 journals. Make certain to use the appr opriate table. This is due to differences in the
specified clearances.
4. Apply the symbol obtained to the “Main Bearing Grade Table” to select main bearing. NOTE:
A : Correction stamp
B : Standard stamp
C : Cylinder No. 1 bore grade
D : Cylinder No. 2 bore grade
E : Cylinder No. 3 bore grade
F : Cylinder No. 4 bore grade
G : No. 1 main bearing housing grade
H : No. 2 main bearing housing grade
I : No. 3 main bearing housing grade
J : No. 4 main bearing housing grade
K : No. 5 main bearing housing grade
: Engine front
PBIC3264J
A : No. 1 pin journal diameter grade
B : No. 2 pin journal diameter grade
C : No. 3 pin journal diameter grade
D : No. 4 pin journal diameter grade
E : No. 1 main journal diameter grade
F : No. 2 main journal diameter grade
G : No. 3 main journal diameter grade
H : No. 4 main journal diameter grade
I : No. 5 main journal diameter grade
PBIC3261J
Revision: May 2010 2011 Versa

CYLINDER BLOCKEM-221
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EM
NP
O
• Measure the side clearance of piston ring and piston ring groove
with a feeler gauge (A).
• If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
replace piston also.
PISTON RING END GAP
• Make sure that cylinder bore inner diameter is within specification. Follow the "Cylinder Bore Inner Diameter" procedure.
• Lubricate with new engine oil to piston (1) and piston ring (2), and then insert (A) piston ring until mi ddle of cylinder (B) with piston,
and measure piston ring end gap with a feeler gauge (C).
• If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
replace the cylinder block.
CONNECTING ROD BEND AND TORSION
Standard:
Top ring : 0.04 - 0.08 mm (0.002 - 0.003 in)
2nd ring : 0.03 - 0.07 mm (0.001 - 0.003 in)
Oil ring : 0.015 - 0.185 mm (0.001 - 0.007 in)
Limit: Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.10 mm (0.0039 in)
PBIC3280J
Standard: Top ring : 0.20 - 0.30 mm (0.008 - 0.012 in)
2nd ring : 0.50 - 0.65 mm (0.020 - 0.026 in)
Oil ring
(rail ring) : 0.15 - 0.45 mm (0.006 - 0.018 in)
Limit: Top ring : 0.51 mm (0.020 in)
2nd ring : 0.83 mm (0.033 in)
Oil ring
(rail ring) : 0.78 mm (0.031 in)
PBIC3267J
Revision: May 2010
2011 Versa

CYLINDER BLOCKEM-223
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EM
NP
O
Measure the outer diameter of
piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bus hing inner diameter) – (Piston pin outer diame-
ter)
• If the measured value is out of the standard, repl ace connecting rod assembly and/or piston and piston pin
assembly.
• If replacing piston and piston pin assembly, follow t he "PISTON TO PISTON PIN OIL CLEARANCE" proce-
dure.
• If replacing connecting rod assembly, follow the "Connecting Rod Bushing Oil Clearance" procedure to select connecting rod bearing.
CYLINDER BLOCK TOP SURFACE DISTORTION
• Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, or
other contamination.
CAUTION:
Be careful not to allow gasket flakes to en ter engine oil or engine coolant passages.
• Measure the distortion on the cylinder block upper face at some
different points in six directions with a straight edge (A) and feeler
gauge (B).
• If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
• Install main bearing cap without main bearings insta lled, and tighten main bearing cap bolts to the specified
torque. Refer to EM-203, "
Disassembly and Assembly" for the tightening procedure.
• Measure the inner diameter of main bearing housing with a bore gauge.
• Measure the position shown [5 mm (0.20 in)] backward from main bearing housing front side in the 2 directions as shown. The
smaller one is the measured value.
• If out of the standard, replace cylinder block and main bearing caps assembly.
NOTE: Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in)
PBIC3266J
Standard : 0.005 - 0.023 mm (0.0002 - 0.0009 in)
Limit : 0.03 mm (0.0012 in)
Limit: 0.1 mm (0.004 in)
PBIC3250J
1 : Cylinder block
2 : Main bearing cap
: Engine front
Standard: 55.997 - 56.017 mm (2.2046 - 2.2054 in)
PBIC4005E
Revision: May 2010 2011 Versa

EM-224
< SERVICE INFORMATION >[MR18DE]
CYLINDER BLOCK
Main bearing caps cannot be replaced as a single part
, because it is machined together with cylinder block.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
• Using a bore gauge (A), measure the cylinder bore for wear, out-
of-round and taper at six different points on each cylinder. [(X) and
(Y) directions at (A), (B) and (C)] [(Y) is in longitudinal direction of
engine].
NOTE:
When determining cylinder bore grade, measure the cylinder bore
(X) direction at (B) position.
• If the measured value exceeds the limit, or if there are scratches and/or seizure on the cylinder inner wall, replace cylinder block.
NOTE:
Oversize piston is not provided.
Piston Skirt Diameter
Measure the outer diameter of pi ston skirt with a micrometer (A).
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner diameter [direction (X), position (B)].
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter)
• If it exceeds the limit, replace piston and pist on pin assembly and/or cylinder block. Refer to EM-212, "
How
to Select Piston and Bearing".
CRANKSHAFT MAIN JOURNAL DIAMETER
Standard inner diameter:
84.000 - 84.020 mm (3.3071 - 3.3079 in)
Out-of-round [Difference between (X) and (Y)]:
0.015 mm (0.0006 in)
Taper limit [Difference between (A) and (C)]:
0.01 mm (0.0004 in)
PBIC4014E
Measure point : Distance from the top 39.9 mm (1.571 in)
Standard : 83.970 - 83.990 mm (3.3059 - 3.3067 in)
PBIC3272J
Standard : 0.020 - 0.040 mm (0.0008 - 0.0016 in)
Limit : 0.08 mm (0.0031 in)
Revision: May 2010 2011 Versa

EM-226
< SERVICE INFORMATION >[MR18DE]
CYLINDER BLOCK
• Install connecting rod bearings (2) to connecting rod (3) and con-
necting rod bearing cap (1), and tighten connecting rod bolts to the
specified torque. Refer to EM-203, "
Disassembly and Assembly"
for tightening procedure.
• Measure the inner diameter of connecting rod bearing with an inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter)
– (Crankshaft pin journal diameter)
• If clearance exceeds the limit, select proper connecting rod bearing according to connecting rod big end diameter and crankshaft pin journal diameter to obtain specified bearing oil clearance. Refer to EM-212,
"How to Select Piston and Bearing".
Method of Using Plastigage
• Remove engine oil and dust on crankshaft pin and the surfaces of each bearing completely.
• Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
• Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the specified torque. Refer to EM-203, "
Disassembly and Assembly" for the tightening procedure.
CAUTION:
Never rotate crankshaft.
• Remove connecting rod cap and bearing, and using the scale (A) on the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING OIL CLEARANCE
Method by Calculation
• Install main bearings (3) to cylinder block (1) and main bearing cap(2), and tighten main bearing cap bolts to the specified torque.
Refer to EM-203, "
Disassembly and Assembly" for the tightening
procedure.
• Measure the inner diameter of main bearing with a bore gauge.
(Bearing oil clearance) = (Main bearing inner diameter) – (Crank-
shaft main journal diameter)
A : Example
B : Inner diameter measuring direction
Standard : 0.037 - 0.047 mm (0.0015 - 0.0019 in)
Limit : 0.07 mm (0.0028 in)
PBIC3275J
PBIC3276J
A : Example
B : Inner diameter measuring direction
Standard: No. 1, 4 and 5 journals : 0.024 - 0.034 mm (0.0009 - 0.0013 in)
No. 2 and 3 journals : 0.012 - 0.022 mm (0.0005 - 0.0009 in)
Limit : 0.065 mm (0.0026 in)
PBIC3277J
Revision: May 2010 2011 Versa

CYLINDER BLOCKEM-227
< SERVICE INFORMATION > [MR18DE]
C
D
E
F
G H
I
J
K L
M A
EM
NP
O
• If clearance exceeds the limit, select proper main bearing according to main bearing inner diameter and
crankshaft main journal diameter to obtain specified bearing oil clearance. Refer to EM-212, "
How to Select
Piston and Bearing".
Method of Using Plastigage
• Remove engine oil and dust on crankshaft main journal and the surfaces of each bearing completely.
• Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
• Install main bearings to cylinder block and main bearing cap, and tighten main bearing cap bolts to the spec- ified torque. Refer to EM-203, "
Disassembly and Assembly" for the tightening procedure.
CAUTION:
Never rotate crankshaft.
• Remove main bearing cap and bearings, and using the scale (A) on the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING CRUSH HEIGHT
• When main bearing cap is removed after being tightened to thespecified torque with main bearings (1) installed, the tip end of
bearing must protrude (B). Refer to EM-203, "
Disassembly and
Assembly" for the tightening procedure.
• If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
• When connecting rod bearing cap is removed after being tightened to the specified torque with connecting rod bearings (1) installed,
the tip end of bearing must protrude. Refer to EM-203, "
Disassem-
bly and Assembly" for the tightening procedure (B).
• If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
PBIC3278J
A : Example
Standard : There must be crush height.
PBIC3279J
A : Example
Standard : There must be crush height.
PBIC3279J
Revision: May 2010 2011 Versa

EM-230
< SERVICE INFORMATION >[MR18DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000005931036
GENERAL SPECIFICATIONS
DRIVE BELT
WATER CONTROL VALVE
EXHAUST MANIFOLD
Unit: mm (in)
THERMOSTAT
SPARK PLUG
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information
CYLINDER HEAD
Engine type
MR18DE
Cylinder arrangement In-line 4
Displacement cm
3 (cu in)1,797 (109.65)
Bore and stroke mm (in) 84.0 x 81.1 (3.307 x 3.192)
Valve arrangement DOHC
Firing order 1-3-4-2
Number of piston rings Compression
2
Oil 1
Compression ratio 9.9
Compression pressure
kPa (bar, kg/cm
2, psi) / 250 rpm Standard
1,500 (15.0, 15.3, 217.6)
Minimum 1,200 (12.0, 12.2, 174)
Differential limit between cylinders 100 (1.0, 1.0, 15)
Tension of drive belt Auto adjustment by auto-tensioner
Valve opening temperature 93.5 - 96.5°C (200 - 206 °F)
Full-open valve lift amount 8 mm/ 108°C (0.315 in/ 226 °F)
Valve closing temperature More than 90°C (194 °F)
Items Limit
Surface distortion Each exhaust port
0.3 (0.012)
Entire part 0.7 (0.028)
Valve opening temperature 80.5 - 83.5°C (177 - 182 °F)
Full-open valve lift amount 8 mm/ 95°C (0.315 in/ 203° F)
Valve closing temperature More than 77°C (171 °F)
Make DENSO
Standard type* FXE20HR11
Spark plug gap Nominal: 1.1 (0.043)
Revision: May 2010 2011 Versa