Re[2]: increasing exhaust/muffler life-span: durable finish?

[Toby Erkson <Toby_Erkson@ccm2.hf.intel.com>]

You know, the below almost looks like a FAQ...
     Toby Erkson
     air_cooled_nut@pobox.com
     '72 VW Squareback 1.6L bored and stroked to 2.0L
     '75 Porsche 914 stock 1.8L for sale


______________________________ Reply Separator _________________________________
Subject: Re: increasing exhaust/muffler life-span: durable finish?
Author:  type-3-errors@umich.edu at SMTPGATE
Date:    3/12/97 11:03 AM


Various people have come up with the following possibilities:

* FLAME SPRAYING with either:
- aluminum ("About $100.00 U.S. It sounds like alot, but it last forever.");
- zinc;
and finish with heat resistant paint;

* CERAMIC COATING. Seems there have been some articles on this subject in
the US VW magazines. ("You have to ship your exhaust to them though and it
costs about $150 to $200.  It gets coated inside and out and will last
forever." "...special baked-on ceramic coatings designed to absorb and/or
radiate heat better.  They would apply a reflective material to the inside
and an absorbing layer on the outside, to keep the heat
in the exhaust gases.  Very durable ...")

*GALVANISING. Apparently it is possible to have exhausts galvanised, as
someone bought one 6 years ago which is "still in great shape, even went
through 1 winter. Unfortunately, all this exhaust is obsolete on the
aftermarket now."

*HEAT RESISTANT PAINT. Can be brushed on. Must be cheapest alternative.

*None of the above. Buy a STAINLESS STEEL EXHAUST, made by a few specialised
companies only. These are of a different pattern due to the difficulty of
forming and welding the metal used. Cost around DFL 600 = US$ 300.


Does anyone have anything to add to this?

Hanno Spoelstra <H.L.Spoelstra@WbMt.TUDelft.NL>
Bloemendaal, The Netherlands