Service Limits & General Specifications

CONNECTING ROD BIG END DIAMETER





^ Install connecting rod cap (1) without connecting rod bearing installed, and tightening connecting rod bolts to the specified torque.
2: Connecting rod
A: Example
B: Measuring direction of inner diameter
^ Measure the inner diameter of connecting rod big end with an inside micrometer.
Standard: 47.000 - 47.013 mm (1.8504 - 1.8509 in)
^ If out of the standard, replace connecting rod assembly.

CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter





Measure the inner diameter of connecting rod bushing with an inside micrometer (A).
Standard: 20.000 - 20.012 mm (0.7874 - 0.7879 in)

Piston Pin Outer Diameter





Measure the outer diameter of piston pin with a micrometer (A).
Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in)

Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) - (Piston pin outer diameter)
Standard: 0.005 - 0.023 mm (0.0002 - 0.0009 in)
Limit: 0.03 mm (0.0012 in)
^ If the measured value is out of the standard, replace connecting rod assembly and/or piston and piston pin assembly.
^ If replacing piston and piston pin assembly, refer to EM-92, "PISTON TO PISTON PIN OIL CLEARANCE". Service Limits & General Specifications
^ If replacing connecting rod assembly, refer to "Connecting Rod Bushing Oil Clearance" to select connecting rod bearing.

CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation





^ Install connecting rod bearings (2) to connecting rod (3) and connecting rod bearing cap (1), and tighten connecting rod bolts to the specified torque.
A: Example
B: Inner diameter measuring direction
^ Measure the inner diameter of connecting rod bearing with an inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) - (Crankshaft pin journal diameter)
Standard: 0.037 - 0.047 mm (0.0015 - 0.0019 in)
Limit: 0.07 mm (0.0028 in)
^ 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.

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.

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".

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.
A: Example
Standard: There must be crush height.
^ If the standard is not met, replace connecting rod bearings.

Part 1:

Part 2:

CONNECTING ROD BEARING





Undersize





Bearing Oil Clearance