2. Check the condition of the pistons.
3. Check the piston diameter "A" at a distance of 13 mm (L13A) or 16 mm (L15A) from the bottom of the piston skirt.
Piston diameter:
- nominal - 72.98 - 72.99 mm
- minimum - 72.97 mm
- repair (0.25) — 73.23 - 73.24 mm
4. Check each cylinder for wear and out-of-roundness.
Measure the diameter of the cylinder on two mutually perpendicular axes "X" and "Y" in three planes A, B and C.
If the diameter of any cylinder exceeds the maximum repair diameter, replace the cylinder block. If the cylinders were bored, go to step "7".
Cylinder diameter:
- nominal - 73.00-73.02 mm
- maximum - 73.07 mm
- maximum repair diameter (0.25) — 73.25 -73.27 mm
Boring allowance - 0.25 mm
Maximum ovality (difference between measurements from the upper and lower planes) - 0.05 mm
5. Remove roughness and scratches from the surface of the cylinder mirror.
6. Check the non-flatness of the cylinder block gas joint surface using a precision ruler and feeler gauge.
Non-flatness:
- nominal - 0.07 mm
- maximum - 0.10 mm
7. Calculate the oil clearance between the piston and the cylinder.
Clearance between piston and cylinder:
- nominal - 0.010 - 0.040 mm
- maximum - 0.050 mm
[Information obtained from this source: HondaBook]