Petrol engines aircooled Cylinder Head Damage

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Burnt spark plug hole

CT 1600 heads, plug has obviously been loose and allowed combustion gases to start leaking up the side of the thread. Subseqently getting worse and burning the thread completely away..

CT Cyl Head Burnt Plug Hole 01.jpg

CT Cyl Head Burnt Plug Hole 02.jpg

Photos: By Squirrel

Loose/missing valve seat (2 litre a/c)

Seen, but not photographed. Vehicle driven back from Germany to UK, valve damaging seat area due to misalignment. One seat completely missing... vehicle made it back!