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BLS Train Noise: Sudden Roar / Pendulum Support?

 
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dieselmartin
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Post21-03-2011, 10:41    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

Hi.

Our Golf suddenly makes a loud noise under load at engine speeds below 1400 rpm.
It is silent when unloaded.

My initial suspicion was the torque arm, but it seems to be fine based on the first photos I saw.
At least nothing is broken – but maybe she's not allowed to push forward, because the one from the 3C is bent even further back.



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Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:36.
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dieselmartin
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Post22-03-2011, 10:54    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

Can someone describe the expected behavior of this storage system?

So, for example, it shouldn't bump into anything directly; the rubber protrusions are just emergency stops, like the buffer pads on shock absorbers... ?

Snake.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.
Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:37.
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dieselmartin
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Post24-03-2011, 10:45    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

Okay,

"Diaper" and "pendulum support" checked.

Could it be that it is supposed to be normally positioned in the front?

I have a small gap there that could be constantly opening and closing due to vibrations from the load, which would allow for a "hammering" sound.



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Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:38.
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dieselmartin
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Post26-11-2012, 9:24    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

New finding:

Does anyone know the background of this change in MJ 08?

http://reichhard-motorsport.com/catalog/images/ebay/PFF85-704a.jpg

The larger gap in the "rotation direction" (on the right side according to Reichhard) probably indicates that it should be softer and not reach its limit ("stop") as quickly... which is what I would prefer.

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.
Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:39.
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Post26-11-2012, 19:05    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

Very interesting. Are you planning an upgrade?
"I will definitely do that during the next service. The buzzing sound on my 2007 1K with BLS and the 6-speed transmission is also getting louder. I think that my extremely fuel-efficient driving style might be causing this part to wear out faster."

If anyone has switched to the new version, please report your experience here.


Translated on 15-08-2026, 4:40.
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dieselmartin
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Post26-11-2012, 21:30    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

The problem is, where am I going to get the 2 kN of force needed to press the bearing halves in? icon_eek.gif

And whether I can get the generator carrier removed from the driveway...


The twice €25 for the storage would be ridiculously low.

First, I'm going to inspect a 2009 Touran with the BlueMotion Techno BLS engine, which should have the new bearing installed... and it's much quieter!

Okay, please provide the German text you would like me to translate into English. I will only provide the translation.
Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:41.
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dieselmartin
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Post10-06-2017, 14:16    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

After years...

I think I've found the reason for the loud rumbling noise:

A blade of the forced ventilation system had come loose and was just lying around.

This allows the air inside the car to resonate nicely, which is similar to how a bass reflex port works.
Sure, the BLS isn't exactly quiet because of that, but it's noticeably better now that I've reinstalled this fin correctly.

Greetings.
Okay, please provide the German text you would like me to translate into English. I will only provide the translation.
Transparency, Teamwork
... there was another T.

I don't know what the f*ck it was.


Translated on 15-08-2026, 4:43.
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Post10-06-2017, 15:15    Subject: BLS Train Noise: Sudden Roar / Pendulum Support? Quote

Thank you for your solution!


Translated on 15-08-2026, 4:43.
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