[T3] Heat exchanger advice

[Dave Hall]

I think the metal parts were mainly to prevent the ehat insulation getting
damaged by gravel and rocks thrown up by the wheels.  Leaving off insulation
in Northern California probably won't have any adverse effect.  In a damper
part of the world the heat exchangers don't generally rust through under the
insulation, so some benefit is gained by keeping them on if your weather
tends to have wet days, and particularly in salty areas - coastal maybe, or
snow treated with salt.

Because we have now got trouble after around 40 years, we tend to think
about preventing it from returning in that time... OK for the youngsters
maybe, but academic for many more senior enthusiasts!

Otherwise, it's personal preference - some like to keep it looking original,
but not too many folk look under there anyway, and even fewer would know
what they would expect to see.

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 Jacob Adam Schroeder
Sent: 28 November 2014 15:44
To: type3 at vwtype3.org
Subject: [T3] Heat exchanger advice

I am in the process of rebuilding the engine in my 1972 Square.  I located a
nice pair of heat exchangers from a local scrap yard, and had them blasted
and ceramic coated--they look beautiful.

My old heat exchangers had the insulation on them, with two metal tins (one
along the bottom, and one along the curved part) over the outside of the
insulation, with everything held on by a series of metal straps.

I'm leaning towards not putting the insulation back on.  I understand that
after 1973, VW quit putting insulation on these anyway.  My insulation is
pretty nasty (oil soaked, torn, etc) and if I can get by without it, I think
I would like to.  What is the collective wisdom on foregoing the insulation?
If climate makes a difference, I live in Northern California.
Is there any modern replacement?

Next, assuming I forgo the insulation, should I still put on the two metal
tin pieces on each side?  Are there any vendors that still sell the original
(or similar) clamps?  I'd rather not use  generic spiral-tooth hose clamps
if I can find something similar to the original look.

Once I get some time, hopefully this weekend, I'll post pictures of my
progress to-date and send a link to the gallery.

Thanks in advance,

Jacob
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