Cylinder Head Inspection for Warpage

Remove the cylinder head (see CYLINDER HEAD REMOVAL ).
Inspect the camshaft (see CAMSHAFT INSPECTION ).
Check the cylinder head for warpage. Measure along the edges, and three ways across the center.
Warpage

Standard (New): 0.07 mm (0.0028 in) max.

Service Limit: 0.08 mm (0.0031 in)
- If warpage is less than 0.08 mm (0.0031 in) cylinder head resurfacing is not required.
- If warpage is between 0.08 mm (0.0031 in) and 0.2 mm (0.008 in), resurface the cylinder head.
- Maximum resurface limit is 0.2 mm (0.008 in) based on a height of 120 mm (4.72 in).
  Cylinder Head Height
  
  Standard (New): 119.9-120.1 mm (4.720-4.728 in)
  
  Fig 1: Checking Cylinder Head For Warpage
  Courtesy of AMERICAN HONDA MOTOR CO., INC.