Connecting Rod Inspection

• If it exceeds the specification, replace the piston, piston pin, snap ring and connecting rod.

Connecting rod large end standard side clearance 

0.14-0.36 mm {0.006-0.014 in} 

Connecting rod large end maximum side clearance 

0.435 mm {0.0171 in} 

Fig 1: Measuring Connecting Rod Large End Side Clearance

• If it exceeds the specification, replace the connecting rod bearing or grind the crank pin and use oversize bearings so that the specified clearance is obtained.

Standard bearing oil clearance at the large end of connecting rod 

0.026-0.052 mm {0.0011-0.0020 in} 

Maximum bearing oil clearance at the large end of connecting rod 

0.1 mm {0.003 in} 

Connecting rod bearing size 

STD: 1.497-1.521 mm {0.05894-0.05988 in} 

OS 0.25: 1.622-1.628 mm {0.06386-0.06409 in} 

OS 0.50: 1.747-1.753 mm {0.06878-0.06901 in} 

Fig 2: Measuring Connecting Rod Oil Clearance

• If not exceeds the specification, replace the connecting rod.

Standard connecting rod small end inner diameter 

20.010-20.021 mm {0.78780-0.78822 in} 

• If not exceeds the specification, replace the connecting rod.
  Fig 3: Measuring Connecting Rod Small End Using Caliper Gauge

  

Standard clearance between connecting rod small end inner diameter and piston pin outer diameter 

0.010-0.026 mm {0.0004-0.0010 in}