Transmission rattle at high RPM on 3rd gear (+6k rpm)

[brainrain]

Hello,

I recently noticed that the transmission rattle at high rpm (+6k rpm) especially on 3rd gear. I think it’s come from flywheel like the noise at low rpm on light flywheel. The clutch and flywheel has been changed (exedy kit clutch stage 1 with light flywheel) with oem CSC (I know it's bad but it was done by the previous owner last year) , since then I have drived 8000 km with this clutch kit.


I read on another post that rattle/chatter was performing at low rpm with light flywheel.


Is it normal this issue at high speed especially on 3rd gear ? I noticed that the transmission was more rattler/chatter during sporty driving (especially on autobhan (german highway) with no speed limit). The rattiling noise is less present when cold.


Can it come from elsewhere?

Thanks for your response.