[T3] N.O.S. Mufflers with loose upper heat exchangers

[Dave Hall]

First, the copper crush gaskets are available - they're used both in
aviation and for certain motorcycles for air-cooled engine exhausts. The VW
part is 36 x 42 (internal x external mm) which I reckon is 1 3/8" x 1 5/8".
That's old AN900-22 and new MS 35769-35 in aviation parts language:-
http://www.aircraftspruce.com/catalog/eppages/an900.php 
or http://www.gen-aircraft-hardware.com/images/pdf/ms35769.pdf )
Looks like 76 cents each, plus whatever the shipping adds.  I think they
were 10 for $5 when I saw them at Oshkosh!

I don't know what bikes use them - you'll have to ask a bike dealer!

As far as exhaust leaking, if the nuts are not tight enough to seal to the
gaskets, the gases generally leak past the pipe flange and come past the
outside of the pipe between the pipe and the big nut.  I don't think they
would get past the threads easily, though exhaust acids might wick into the
threads and increase the rate of corrosion.  Stuff some exhaust paste around
the pipes if the exhaust blowing is worrying you - it will probably need
renewing from time to time.

All the other parts of a muffler fitting kit are contained in a Bug kit.
You may have to make up a tailpipe fitting kit from other exhaust fittings,
but the small-bore damper pipe clamp is a Bug tailpipe clamp assembly.

I hope that helps restore peace in Type 3 land.  ;-)

Dave
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Keith Park
Sent: 11 November 2015 04:34
To: type3 at vwtype3.org
Subject: Re: [T3] N.O.S. Mufflers with loose upper heat exchangers

OK, I think I got ya now,
get an Oxy torch (dont even try with MAPP gass or propane) and heat the piss
out of the hex nuts, dont melt them but cherry red all the way around, let
them cool till just dark and have at it, try this several times.  It may or
may not work, your not in the salt belt so you have a better chance.

Copper rings are out there, if not get copper gaskets for vacuum couplings
that will fit.  it IS a pain when they leak and you have to try and get them
apart without sacrificing the muffler.

Keith


*N.O.S. muffler with N.O.S. upper heat exchangers still attached.

*However, the upper heat exchangers are loose.

*The nut did not turn either direction even with a 6' breaker bar.

*Instead of damaging the N.O.S. muffler, did as advised and left them loose.

*Was told the carbon build up and seal them. However, this was wrong and
instead will do damage.

*Further, the copper rings are N.L.A. separate and good luck finding a
muffler kit. Even the O.E.M.kit needed a good bit of exhaust paste.


Thank you so very much!
Adriel



-------------------------

1971 Sunroof Squareback with F.I. - In the Process of Being Dog Wgn 2
1985 Mercedes-Benz 300TD-T - Dog Wgn
Master's Student, A.S.U., living in north central Mesa, AZ


 		 	   		  
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