Engine sound tick/knock diagnosis

[TVR Tommy]

Can anyone shed any light on what the idle ticking / knocking sound might be on this speed six in the video.

Should it be present?

https://m.youtube.com/watch?v=X9tRdkmv34M&t=70...

[Daniel-vwbsa]

Sounds fine to me. It’s a bit of a tappety engine at cold anyway, when where the valve clearances were last adjusted.? It might just need some of the shims swapping out. Bargain on 3 hours labour at a specialist for this work.