Drivetrain chatter?

[that_m3_dude]

I've been getting some chattering noise when im in third gear.
Only noticeable in 3rd gear.
Kinda sounds like flywheel wheel chatter but I wanted to get some inputs.
its a 2008 M3 6MT with 92k miles.
Stock clutch and flywheel. Redline MT90 fluid
It also has a short shifter kit with stiffer carrier bushings
Car drives and rows through gears fine
Any input would be appreciated. TIA

[mapster37]

need a better quality sound clip to start

[that_m3_dude]

yea a little difficult to get a good quality sound. its not super loud.
the chatter can be heard from 0:02 - 0:04

[Down_Shift]

Short shifter rattle.

[pbonsalb]

The 2008s had lighter flywheels, which caused a little more transmission noise to be heard. I think the difference is at idle, and not noticeable at higher rpm. Perhaps with less damping in the linkage due to the stiffer bushings, some transmission noise can be heard at higher rpm.

[kyrix1st]

Originally Posted by pbonsalb

The 2008s had lighter flywheels, which caused a little more transmission noise to be heard. I think the difference is at idle, and not noticeable at higher rpm. Perhaps with less damping in the linkage due to the stiffer bushings, some transmission noise can be heard at higher rpm.

Do you know how much lighter?