Hello
I have an s14 with a SR20 and a 350z gearbox and a 6 puk clutch/ light flywheel. Everything works perfectly except the noise coming from the transmission/flywheel area. This noise was non existent with the standard gearbox. It happens under 3000rpm under acceleration or deceleration, it sounds like a loud metallic rattle/chatter. I know 350z gearboxes are known for being noisy with lightweight flywheels but this sounds really bad. Sorry about the video it isnt great, but captures the noise well at the end.
Any help as to what this might be is much appreciated.