Connecting Rod Bearing

CONNECTING ROD BIG END INNER DIAMETER





^ Install connecting rod cap without the connecting rod bearing installed. After tightening the connecting rod nut to the specified torque, measure the connecting rod large end inner diameter using an inside micrometer. Refer to "ASSEMBLY" for the tightening procedure.
Standard: 55.000 - 55.013 mm (2.1654 - 2.1659 inch)
^ If it exceeds the standard, replace the connecting rod.

CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter





Measure the inner diameter of bushing.
Standard: 22.000 - 22.012 mm (0.8661 - 0.8666 inch)

Piston Pin Outer Diameter





Measure the outer diameter of piston pin.
Standard: 21.989 - 22.001 mm (0.8657 - 0.8662 inch)

Connecting Rod Bushing Oil Clearance





(Connecting rod bushing oil clearance) = (Inner diameter of connecting rod bushing) - (Outer diameter of piston pin)
Standard: 0.005 - 0.017 mm (0.0002 - 0.007 inch)
^ If the measured value exceeds the standard, replace the connecting rod assembly and/or the piston and piston pin assembly.
^ If replacing piston and piston pin assembly, refer to "PISTON TO CYLINDER BORE CLEARANCE".
^ If replacing connecting rod assembly, refer to "OIL CLEARANCE OF CONNECTING ROD BEARING" to select the connecting rod bearing.

Factory installed parts grading:








Service parts apply only to grade 0.

OIL CLEARANCE OF CONNECTING ROD BEARING
Method of Measurement





^ Install connecting rod bearings to connecting rod and cap, and tighten the connecting rod nut to the specified torque. Refer to "ASSEMBLY". Using a inside micrometer measure the inner diameter of connecting rod bearing.
(Oil clearance) = (Inner diameter of connecting rod bearing) - (Outer diameter of crankshaft pin)
Standard: 0.020 - 0.045 mm (0.0008 - 0.0018 inch)
Limit: 0.055 mm (0.0022 inch)
^ 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 "HOW TO SELECT CONNECTING ROD BEARING".

Method of Using Plastigage





^ Remove oil and dust on the 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 connecting rod bearing cap, and tighten the connecting rod nut to the specified torque. Refer to "ASSEMBLY".

CAUTION: Never rotate crankshaft.

^ Remove connecting rod cap and bearings, and using the scale on the plastigage bag, measure the plastigage width.

NOTE: The procedure when the measured value exceeds the repair limit is same as that described in "Method of Measurement".

CRUSH HEIGHT OF CONNECTING ROD BEARING





^ When the connecting rod bearing cap is removed after being tightened to the specified torque with connecting rod bearings installed, the tip end of bearing must protrude. Refer to "ASSEMBLY" for the tightening procedure.
Standard: There must be crush height.
^ If out of the standard, replace connecting rod bearings.





CONNECTING ROD BEARING





Undersize





Bearing Oil Clearance