[T3] I've got another question , same one I asked a while back.

[Bobnotch]

Sue's Fastback is the only real "stock" muffler we have here, in that it's clamped on like stock.
Back when I first put the Notch together, I ran it with a header (an old Thunderbird w/a cherry bomb).
I had that thing on and off so many times in the previous years (used to be on the Fastback) that I ended up flanging it to the HE's.
But, I really wanted something quieter, so I surfed the Samba Classifieds, and found a stock muffler.
The one on my Notch I got from Everett in Arizona, and the ends had already been abused.
On it, I cut part of the ends off, bolted a set of flanges together, and welded them to the muffler, using the HE's as a guide to set the depth.
I then took it apart, and added a stock VW exhaust gasket.
On Rob's 1600, we used old T-1 header flanges (cut off) and did the same thing on it.
If you knew how much you cut off, or knew where you set the flanges, you could duplicate where your flanges should go.
Or you could bolt your flanges together, and then set the muffler in place and tack it in place, remove it and final weld.
When I change the muffler on my Notch, I'll probably use Rob's old 1600 set up, since he went to a Type 4 engine
(uses a completely different exhaust system).
Since I don't use the Notch (or any of the VW's) in the winter, the exhaust system lasts quite a few years.
I've got 14 years on the current set up, even though the muffler was used when I got it.
I got the idea about welding the flanges on from looking at the exhaust system on my old 76 beetle.
On it, the entire exhaust system is bolted together, stock.
Bob


-----Original Message-----
From: Jim Adney <jadney at vwtype3.org>
To: type3 <type3 at vwtype3.org>
Sent: Sun, Jul 22, 2018 3:30 pm
Subject: Re: [T3] I've got another question , same one I asked a while back.


On 22 Jul 2018 at 12:40, Bobnotch wrote:

> The best, longest lasting repair for this is to weld flanges on both parts
> and bolt them together.

I agree that this really works, but how about the next time you need to
replace the muffler? How hard is it to get the length exactly right on the new
muffler? Clearly you need to weld the new muffler flanges on last, but the
muffler tubes have to be cut to the right length first. Keep in mind that the
next muffler will be different, because it's from a different manufacturer, or a
different production lot, or just because....

How hard is it to get that length right the second time around?

If the flanges fit around the OD of the muffler tube, that makes it easier, as
you then get some latitude for adjustment. Is that how they fit?

--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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