Impreza L Sedan F4-2.2L SOHC (1997)
Connecting Rod: Service and Repair
1. Replace connecting rod, if the large or small end thrust surface is damaged.
2. Check for bend or twist using a connecting rod aligner. Replace connecting rod if the bend or twist exceeds the limit. Limit of bend or twist per 100
mm (3.94 inch) in length: 0.10 mm (0.0039 inch)
3. Install connecting rod fitted with bearing to crankshaft and measure the side clearance (thrust clearance). Replace connecting rod if the side clearance
exceeds the specified limit.
Connecting rod side clearance:
-
Standard: 0.070 - 0.330 mm (0.0028 - 0.0130 inch)
-
Limit: 0.4 mm (0.016 inch)
4. Inspect connecting rod bearing for scar, peeling, seizure, melting, wear, etc.
5. Measure the oil clearance on individual connecting rod bearings by means of plastigage. If any oil clearance is not within specification, replace the
defective bearing with a new one of standard size or undersize as necessary.
Connecting rod oil clearance:
-
Standard: 0.015 - 0.045 mm (0.0006 - 0.0018 inch)