M200 "s60" cylinder head for 58-60mm stroke

Facts:

-M14 long-reach central spark plug

- Piston at top dead center 0mm, squish band completely in the head. No head spacer needed anymore for proper timing,

- finally moderate compression with long stroke

- 18.4ml @ 1.3mm squish band results in 12.5:1 with 60mm stroke (12.1:1 with 58mm stroke / 11.83:1 with 56.5mm stroke)

- Cylinder head outer contour = M200 outer contour

- fits into common cylinder cowlings for M200 (builds a bit flatter)

- Counterbores for hexagon socket screws with 12mm diameter, so that washers can be used

- Screw length 6x25 and thus 5mm shorter than standard

- Omega combustion chamber for faster combustion

- Additional holes at the cylinder mounting positions to allow removal of the cylinder and head

- Combustion chamber is 1.3mm deep in the head, meaning the squish band is completely within the head