Operation CHARM: Car repair manuals for everyone.

Cylinder Block Assembly: Testing and Inspection





1. Measure wear and taper in direction X and Y at three levels in each cylinder as shown.





- Bore Taper:
- Limit: (Difference between first and third measurement) 0.05 mm (0.002 inch)
- If the measurements in any cylinder are beyond the Oversize Bore Service Limit, replace the block.
- If the block is to be rebored, Check the piston clearance after reboaring.

NOTE: Scored or scratched cylinder bores must be honed.

- Reboring Limit: 0.25 mm (0.010 inch) max.








2. Check the top of the block for warpage. Measure along the edges and across the center as shown.
- Engine Block Warpage
- Standard (New): Below 0.07 mm (0.003 inch) max.
- Service Limit: 0.10 mm (0.004 inch)