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) 

Fig 1: Measuring Inner Diameter Of Connecting Rod Bushing With Inside Micrometer

Courtesy of NISSAN MOTOR CO., U.S.A.

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) 

Fig 2: Measuring Outer Diameter Of Piston Pin With Micrometer

Courtesy of NISSAN MOTOR CO., U.S.A.

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, follow the "PISTON TO PISTON PIN OIL CLEARANCE" procedure.
• If replacing connecting rod assembly, follow the "Connecting Rod Bushing Oil Clearance" procedure to select connecting rod bearing.