Just got my RX8 couple weeks ago from a forum member. It is a 2004 MT, I notice when it is at neutral with clutch released it makes a weird sound, but when the clutch is pressed down it goes away. I do not know what happened here, want to diagnose this issue before more damage is done. Thanks for your help and time.
Hope this video may help, please turn up the volume to clearly hear this noise.
in the video, 15-23s, 30-38s, 41-47s and 51-end are the period with clutch released and making noise. Thanks again.
-Yushen

 

That's normal

 

Thanks for your reply, I thought it was something wrong with release bearing assy, I am a noob, just guessing.

 

But I can still hear the grating sound, like lack of lubrication

 

Yushen,
Duval Mazda in Jacksonville installed the clutch, flywheel and a new release bearing when the new engine was put in, check the receipts I've given you.

 

But it sounds weird now, idk why. especially just starting the car. Once runs for a while it gets better

 

Agreed. It's common, and nothing to worry about.

Major kudos for providing a video (audio.) Makes it so much easier to comment about.

 

OK thanks, solved

 

Sorry for reviving this, but ive been experiencing the same thing since i bought my 40th. Ive dealt with it for a while now but what is causing the noise?? Its a 08 with 32k miles

My 09 didnt make this noise at 30k miles,
my friends 04 doesnt make the noise at 60k,
my friends 05 doesnt make the noise at 90k,
my friends 04 doesnt make the noise at 50k,
my friends 06 doesnt make the noise at 60k
my friends 09 doesnt make the noise at 40k
my friends 04 DOES make the noise at 98k

when i brought my car to the stealership they told me they had 4 cars on the lot that had the same noise and it was normal, which is bullshit because then the rest of his cars arent normal, and i have heard my friends cars without this noise with more milage.

 

Throwout bearing chatter? Mine has been doing it since 60k.

 

thats what it was, the throwout bearing.

anybody know how work intensive it is to fix this problem?

 

Hopefully somebody else can give you a better answer

 

I thought it was something wrong with clutch release bearing

 

I thought that was the same... i have yet to master the hurdle of specific parts that are tiny as hell.