Valve Margin
Check valve head margin thickness, if less than specification replace valve. See MARGIN THICKNESS table.
MARGIN THICKNESS
| Valve | In. (mm) | |
|---|---|---|
| Standard | ||
| Intake | .039-.055 (.99-1.39) | |
| Exhaust | .051-.067 (1.29-1.70) | |
| Minimum | ||
| Intake | .020 (.50) | |
| Exhaust | .031 (.80) | |