General Specifications
| Bore Diameter (Bearing Counterbore Diameter) | Intake (Max.) | 47.097 mm (1.8542 in) |
| Intake (Min.) | 47.072 mm (1.8532 in) | |
| Exhaust (Max.) | 39.739 mm (1.5645 in) | |
| Exhaust (Min.) | 39.714 mm (1.5635 in) | |
| Gasket Surface Finish | --- Head Gasket Surface - WT = 12/2.5. Head Gasket Surface Finish - RZU-13.5 micron. Filter cut off at 0.08 min TPI @ 3.5 Microns below the peak 63% minimum. Cut off at 0.08 mm (0.031496 in), 0 Ref = 2V | |
| Gasket Surface Flatness | 0.18 mm (0.007 in) | |
| Combustion Chamber Volume | 61.5-64.5 cc | |
| Valve Guide Bore Diameter | 7.015-7.044 mm (0.276-0.277 in) | |
| Head Gasket Surface Flatness | 0.08 mm (0.003 in) Measured over 152.0 mm (6.00 in) |