Diddle

VCT is working fine, it’s even difficult to locate the sound with a stethoscope. However definitely audible from under the engine as with OP’s video. Possibly worn bearings but it’s definitely not a knock. The sound can be heard while driving with the window down aswell when passing a barrier or other cars when the sound bounces back. Sounds like a little jingle bell weirdly enough. Any other ideas?

Bump. Lifters replaced a few months ago and noise persists

G’day, I Have this exact same noise in the video, anyone end up figuring it out? Same issue as originally described and tried everything OP did aswell. Only once warmed up, runs and sounds fine while warming up. Not an exhaust leak, all new gaskets + studs, washers and nuts for manifold and turbo. Also changed oil and filter plus trying different oil viscosities, hasn’t made a difference. Leaning towards lifters but due to it being alright on cold start has me baffled.