(video) Whirring noise after replacing CSB, Guibo, tranny mounts, and diff mount with all OE parts.

[Caleb Dillard]

I recently bought a 2000 z3 2.8 with 120,000 miles and 5spd. I could tell there there were some worn driveline components due to clunking and bouncy acceleration due to a toasted giubo. So i went through and replaced the giubo, center bearing, and the rear differential bushing as well to cover my bases. After this work I now get a whistling sound that starts at around 35-40 mph. At first i thought it was simply wind due to a misfitted heat shield or something. But the sound changes pitch when i engage and disengage the clutch. Additionally, while trying to diagnose i noticed a very faint rubbing/scraping sound that can be heard inside the car only with the car in nuetral and the clutch completely let out (foot not on the clutch) when sitting still, I’m pretty sure this was not present before the job and it may be present when moving but it just drowned out by other noises. I’m going to go back in and recheck all the driveline components but to me it seems like a transmission deal. So i wanted to ask if this sticks out anyone, or if theres any way I could have damaged the transmission when taking the driveshaft out and putting it back in. I supported it the whole time the trans cross member was removed...thanks in advance.

Here are a couple videos of the noise: one while driving and one in a parking lot idling.

View: https://youtu.be/w3Zgykf6msE

View: https://youtu.be/yq1ITu4tHXM

 

[Grenville]

Could maybe be the clutch throw out bearing getting ready to poo itself?????

 

[Mario]

The centre bushing needs some pre-load when installing - just a wild guess?

 

[the Nefyn cat]

That first clip sounds (from over here, anyway) like the release bearing to me. The second, I'd have to be a bit closer to have a clue. Possibly nothing to do with it, but the gearboxes on these quite often benefit from an oil change. Probably won't cure that noise, but worth doing, especially if it does turn out to be the clutch letting you know that it's getting tired, much easier to change the oil if the box is out.

 

[Lee]

First video is a common thing, as said above the release bearing.

The second video sounds like the wind to me.

 

[the Nefyn cat]

And we've all suffered from that.

 

[Caleb Dillard]

Wind was my first thought, albeit probably wishful thinking, maybe ill tape some cardboard to the undercarriage and see if the noise changes/goes away to rule that out.

 

[Dino D]

You guys have all missed the obvious:
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it’s because his steering wheel is on the wrong side

 

[Caleb Dillard]

Ah s***, I’ll be sure to look into a DIY to address that if I ever get this noise figured out.

 

[the Nefyn cat]

Jeez, that's so obvious. I feel a right fool now.