[T3] muffler - HE leaks

[Phil Hof]

Here are a couple of photos I found on the Samba to illustrate the problem, and why it is critical.
This one clearly shows soot stains where the gasses flow from the muffler connection back into the HE heater supply air.
http://i106.photobucket.com/albums/m247/myhrdly/70%20Bus/IMG_1714.jpg
Although the HE air is pressurized by the fan, it’s very much lower pressure than in the exhaust stream, and so a “jet” of exhaust leaks right into your heater air supply!

And here is a diagram showing the problem:
https://www.thesamba.com/vw/gallery/pix/846600.jpg <https://www.thesamba.com/vw/gallery/pix/846600.jpg>

You will probably smell the exhaust like I did, but if yours is really well tuned, you might not.  But the CO will still kill you!

-Phil

> ----------------------------------------------------------------------
> Message: 1
> Date: Mon, 23 Jul 2018 00:51:07 +0100
> From: "Dave Hall" <dave at hallvw.clara.co.uk>
> Subject: Re: [T3] I've got another question , same one I asked a while	back.
> 
> You have to be careful to seal off the rear of the large heater boxes to
> prevent any leaking exhaust getting in around there  Originally there's a
> large clamp and packing around the pipe to stop exhaust leaks getting into
> the heating system, but mine had more-or-less rusted away (parts 14 and 15
> on http://home.clara.net/hallvw/type3/T3pbo/T3pb2-12.htm .)
> 
> Cheers,
> Dave
> UK VW Type 3&4 Club
> ==================
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