Hi,
Tried this question a while ago however tined out, so here goes again.

This a four part question answer in inches or millimeters is OK.
1. What is the piston protrusion above the block?
2. What is the piston sleeve protrusion above the block?
3. What is the pre-chamber protrusion from the underside of the cylinder head into
The combustion chamber?
4. What is the torque on the pre- chamber circular nut.

Thanks,
Der Alte Adler.