Surface Variation - Head-to-Block
CONTACT SURFACE INSPECTION
Test data of crankcase:
- Height of crankcase from center of basic bearing bore (H)
When new: 234.97-235.03 mm
After machining: ≥234.6 mm
- Crankcase
Peak-to-valley height (Rz) upper contact surface: 0.012 mm
Waviness (Wt) upper contact surface: 0.009-0.012 mm
Unevenness of contact surface in transverse direction: 0.030 mm
Chamfer of cylinder bore at contact surface of crankcase: 0.200-1 x 75°