Cylinder Head Machining
Cylinder HeadOverall Height 135.90 - 136.0 mm (5.3504 - 5.3543 in)
Minimum Height 135.50 mm (5.3346 in)
Permissable deviation from flatness of contact surface:
In longitudinal direction 0.08 mm (0.0031 in)
In transverse direction 0.00 mm (0.00 in)
Permissable deviation of parallelism of top to bottom contact surface in longitudinal direction 0.1 mm (0.004 in)
Peak to valley height 0.003 - 0.010 mm (0.0001 - 0.0004 in)
NOTE:
- Only machine cylinder head contact surface if porous or damaged points are found or if the measurment reveals an impermissable deviation of flatness in longitudinal direction of more than 0.2 mm (0.08 in)
- The top cylinder head contact surface must not he machined otherwise the basic bores of the cainshaft bearings will be altered.
- If cracks are suspected (Internal loss of coolant). the cylinder head must be pressure-tested.