Transmission clonk?

Argenta · Post by **Argenta** » Mon Jan 18, 2021 12:58 pm

Well hi, I've had this noise in my transmission as long as I remember, to the point I don't even hear it anymore.
Until this christmas!
And I had a look at one of my own youtube clips, it can be heard in the beginning here:

https://www.youtube.com/watch?v=vOxHloV-kmE

Is it just the double-mass clutch making it's usual theatre or is it something else?

Chris_D · Post by **Chris_D** » Mon Jan 18, 2021 1:39 pm

Dunno about your klonk but that was a legit pass by Renaultboy - you were proper dawdling through the Adenauer esses.

GT Spec · Post by **GT Spec** » Mon Jan 18, 2021 2:56 pm

Sounds very much like the dual mass flywheel yep! Have you considered converting to a solid 1 piece one?

mmm-five · Post by **mmm-five** » Mon Jan 18, 2021 3:20 pm

GT Spec wrote: ↑Mon Jan 18, 2021 2:56 pm Sounds very much like the dual mass flywheel yep! Have you considered converting to a solid 1 piece one?

The only noise I've heard from my DMF was a rattling with the clutch pedal depressed - never heard a clunk from it in 140,000 miles (got a new clutch & flywheel at that point).

However, that clunk sounds more like the noise I was hearing when my diff was on it's way out (BMW replaced it under warranty and did diff bushes at the same time) - or maybe simply gearbox/engine mounts - but it's hard to tell where it's coming from from a GoPro recording.

Although on an e46 M3, there's a common issue with a clunk from the diff bushes (about 3m in the below video you can see the sort of play that can occur)...

Argenta · Post by **Argenta** » Mon Jan 18, 2021 4:13 pm

GT Spec wrote: ↑Mon Jan 18, 2021 2:56 pm Sounds very much like the dual mass flywheel yep! Have you considered converting to a solid 1 piece one?

Thanx! No I have not, I mean its not getting any worse and it all works as normal... as yet!

How much difference does it make, other than being quiet?

Mmm-five,
Thanx! I will have a look at this. Don't want the diff to fall out...

Altho, the noice seem consistent even with less force, say just doodling in a parking square. As soon as I press the clutch I get that sound.

Chris_D wrote: ↑Mon Jan 18, 2021 1:39 pm Dunno about your klonk but that was a legit pass by Renaultboy - you were proper dawdling through the Adenauer esses.

Well unless you missed it a certain M3 was blocking me (and I had just passed the obviously slower Clio.. (so I had to pass him again))

And I could tell by his driving (the M3) he had no idea I was behind him (didn't use his mirror) so I had to wait for a safe place to overtake, also as his speed was slightly too close to mine (having the same engine)

Zedebee · Post by **Zedebee** » Mon Jan 18, 2021 8:05 pm

Great video. Makes you realise how spartan the cockpit is on the passenger side; I wish I could have seen your dials.

Sorry I can’t help with the clonk.

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