Hi,

Here is a video of the engine hot and the ticking(or pinging) specially when the engine revs go down.

M130 ticking when hot - YouTube

and here is when driving, you will notice when i press the gas metalic pinging happen (the best I can describe) and it is extremely noticable.

M130 ticking on acceleration - YouTube

When I took the car to the mechanic (who is considered specialist in these cars) i revved it few times and he "knew" exactly what it is. Said it is the crankshaft bearings.

I have put new cables, new spark plugs, set the valves and timing as per specs. No issue with the power, starting or accelerating except the noise.

Thank you.