Jabiru 2200 boroscoped
Boroscope check of cylinders of my Jabiru 2200 engine for the UL450 project. This engine has been in storage (inhibited) since 2000. The barrels are steel (4130 I believe) and this is how they look - shiny with the hone marks clearly visible. Brown stuff on the bottom surface and on the piston is the rust inhibitor oil.