Unfortunately didn't get it ready for my sons birthday which is disappointing. But assembled the parts so the crank could turn over by hand. To complete the engine is cylinder gaskets, plumbing, mounting board and painting. The photos below show the engine as given to my son this morning (26/03/2021)

Click image for larger version.  Name: Assembly 1.jpg  Views: 178  Size: 339.5 KB  ID: 38985 Click image for larger version.  Name: assembly 2.jpg  Views: 164  Size: 274.8 KB  ID: 38986

The Home Engineer