In pursuit of silence

DorianL · Posted: Thu Apr 23, 2015 6:08 am Post subject: In pursuit of silence

I have lined my KG with anti rattle and MLV... I can hear draft coming from the doors and dash, so there is still some plugging work to do there.

On other hand a fella a while back told me that the racket I was hearing was also coming from air rushing through the dual carbs.

Apparently there is an expensive kit for bugs whereby you can box the air intake to muffle it.

Anyone know where I can find that? My plan is to adapt it to the Ghia.

DorianL · Posted: Thu Apr 23, 2015 6:41 am Post subject:

Ah-HA! Here it is...

Image may have been reduced in size. Click image to view fullscreen.

Anyone have any experience with the efficacy of these things?

Clatter · Posted: Thu Apr 23, 2015 7:11 am Post subject:

I rode in a car that had one of those once a long time ago.

And it did a very good job in keeping the noise level in the car down,
Especially on the highway.

Expensive, yes.
Possibly robs a bit of power.
But nothing will do more to keep a big motor civilized and quiet IMHO.
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Bus Motor Build

What’s That Noise?!?

DorianL · Posted: Thu Apr 23, 2015 7:37 am Post subject:

Thanks Chief - much appreciated.

I know it expensive, but as my KG is intended to be a daily driver, I think this makes sense.

All other feedback welcome - for the moment, I think the rattletrap and MLV is not enough.

CiderGuy · Posted: Thu Apr 23, 2015 7:52 am Post subject:

SoCalJes · Posted: Thu Apr 23, 2015 9:18 am Post subject:

I think the most restrictive part are those inlets. They look pretty small...
If you get it definitely run a K&N style gauze filter on that.

I've been looking for that part that goes on the carbs for IDF 44s but haven't seen a single one and the aluminum one are pretty small and better suited for pressurized intakes.

If you come across any on your search please PM me.
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Jesse
71 Ghia
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Just because it didn't come that way, doesn't mean it shouldn't have.

tmitoraj · Samba Member Joined: May 10, 2007 Posts: 177

Anyone have a link to that Webber breather box set up? Do they still make it? Will it fit in the Thing engine bay? Any leads would be appreciated. Thanks Tom

SirNickity · Posted: Fri Sep 25, 2015 7:48 am Post subject:

It seemed to me that a lot of noise came from the clicking and clacking of the motor reflecting off the road from the underside. More an issue when you're driving through the line at Starbucks than on the highway, of course. But you can certainly tell the difference between road surfaces with different acoustic properties.

My fix for that: http://www.evwest.com/catalog/product_info.php?cPath=40&products_id=220
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1970 KG Coupe
1974 KG Convertible (EV conversion underway)

FRNKNSTNGHIA · Posted: Fri Sep 25, 2015 1:49 pm Post subject:

DorianL · Posted: Tue Sep 29, 2015 2:58 am Post subject:

This project is something I will definitely floow through on... it is just backburnered for the moment as I take care of some niggling details

carl4x4 · Posted: Fri Oct 09, 2015 5:52 am Post subject:

Not sure those clear the deckled on Ghias...
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1969 UK Karmann Ghia build http://www.thesamba.com/vw/forum/viewtopic.php?t=518789&highlight=

Bones 53 · Posted: Sat Oct 10, 2015 6:30 pm Post subject:

If you want quiet buy another car or a louder stereo. VW's will never be quiet. Consider the factory designed the engine to cruise at around 3400 RPM. Your modern cars cruise at like 2000 RPM or less. Putting that air cleaner set-up on will likely kill your performance.

My son did tons of dynomat and other sound deadening. There really was no difference pre and post. His is a 1776, berg stock valve heads, engle 120, 9:1, Doug Berg custom stepped header and dual 40 IDF.


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