[T3] Muffler

Jim Adney jadney at vwtype3.org
Tue Dec 15 13:35:21 PST 2020

On 15 Dec 2020 at 20:58, Dave Hall wrote:

> I've adapted those mufflers by cutting the pre-heat pipe off to leave a
> couple of inches, then flatten and bend over the stub end to seal it.  No
> need for brazing.

That may work, depending on where it ends up. I've seen other fixes like that 
which ended up pointing at wiring, which eventually got burned up, creating 
an even bigger problem. I may be overreacting, but I'd really hate to see a 
repair turn into a problem.

I used to work in a bike shop, and every fall we would get dozens of bikes in 
for tire replacements, because they had been brought to campus on cars 
with rear mounted bike racks with the bike hanging down just far enough for 
one wheel to end up in the way of the car's exhaust. You'd think that driving 
at highway speed would provide enough "wind" that it would cool the tire, but 
we'd see tires with 4-6" completely gone. Nothing left except for the bead, 
which had been sheltered in the metal rim.

In this case, I'm not sure where that stub would end up. Make sure you know 
and assume there will be some very hot exhaust leaking out of there. Point it 
in a harmless direction.

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

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