Nissan Tiida C11. Manual - part 718

EM-224

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[MR18DE]

ENGINE UNIT

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 piston 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 piston pin assembly and/or cylinder block. Refer to 

EM-230, "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)

ENGINE UNIT

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• Measure the outer diameter of crankshaft main journals with a

micrometer (A).

• If out of the standard, measure the main bearing oil clearance.

Then use undersize bearing. Refer to "MAIN BEARING OIL
CLEARANCE".

CRANKSHAFT PIN JOURNAL DIAMETER 

• Measure the outer diameter of crankshaft pin journal with a micrometer.

• If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing. Refer

to "CONNECTING ROD BEARING OIL CLEARANCE".

OUT-OF-ROUND AND TAPER OF CRANKSHAFT

• Measure the dimensions at four different points as shown on each

main journal and pin journal with a micrometer. 

• Out-of-round is indicated by the difference in dimensions between

“X” and “Y” at “A” and “B”.

• Taper is indicated by the difference in dimension between “A” and

“B” at “X” and “Y”.

• If the measured value exceeds the limit, correct or replace crankshaft.
• If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select

main bearing and/or connecting rod bearing. Refer to "MAIN BEARING OIL CLEARANCE"   and/or "CON-
NECTING ROD BEARING OIL CLEARANCE".

CRANKSHAFT RUNOUT 

• Place a V-block on a precise flat table to support the journals on

the both end of the crankshaft.

• Place a dial indicator (A) straight up on the No. 3 journal. 
• While rotating crankshaft, read the movement of the pointer on the

dial indicator. (Total indicator reading)

• If it exceeds the limit, replace crankshaft.

CONNECTING ROD BEARING OIL CLEARANCE

Method by Calculation

Standard: 51.959 - 51.979 mm (2.0456 - 2.0464 in) dia.

PBIC3457J

Standard: 43.953 - 43.971 mm (1.7304-1.7311 in) dia.

Limit:

Out-of-round (Difference between “X” and “Y”)

: 0.0035 mm (0.0001 in)

Taper (Difference between “A” and “B”)

: 0.0035 mm (0.0001 in)

PBIC3459J

Standard

: 0.05 mm (0.0020 in)

Limit

: 0.10 mm (0.0040 in)

PBIC3458J

EM-226

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ENGINE UNIT

• 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-212, "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-230,

"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-212, "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-212, "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

ENGINE UNIT

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• 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-230, "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-212, "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 the

specified torque with main bearings (1) installed, the tip end of
bearing must protrude (B). Refer to 

EM-212, "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-212, "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