<div dir="ltr">I would leave off the insulation & the metal guards. They just trap moisture & dirt. <br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 28, 2014 at 3:50 PM, Dave Hall <span dir="ltr"><<a href="mailto:dave@hallvw.clara.co.uk" target="_blank">dave@hallvw.clara.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I think the metal parts were mainly to prevent the ehat insulation getting<br>
damaged by gravel and rocks thrown up by the wheels. Leaving off insulation<br>
in Northern California probably won't have any adverse effect. In a damper<br>
part of the world the heat exchangers don't generally rust through under the<br>
insulation, so some benefit is gained by keeping them on if your weather<br>
tends to have wet days, and particularly in salty areas - coastal maybe, or<br>
snow treated with salt.<br>
<br>
Because we have now got trouble after around 40 years, we tend to think<br>
about preventing it from returning in that time... OK for the youngsters<br>
maybe, but academic for many more senior enthusiasts!<br>
<br>
Otherwise, it's personal preference - some like to keep it looking original,<br>
but not too many folk look under there anyway, and even fewer would know<br>
what they would expect to see.<br>
<br>
Dave<br>
UK VW Type 3&4 Club<br>
===================<br>
<span class=""><br>
-----Original Message-----<br>
From: <a href="http://type3-vwtype3.org" target="_blank">type3-vwtype3.org</a> [mailto:<a href="mailto:type3-vwtype3.org-bounces@lists.vwtype3.org">type3-vwtype3.org-bounces@lists.vwtype3.org</a>]<br>
On Behalf Of Jacob Adam Schroeder<br>
</span><span class="">Sent: 28 November 2014 15:44<br>
To: <a href="mailto:type3@vwtype3.org">type3@vwtype3.org</a><br>
Subject: [T3] Heat exchanger advice<br>
<br>
</span><div><div class="h5">I am in the process of rebuilding the engine in my 1972 Square. I located a<br>
nice pair of heat exchangers from a local scrap yard, and had them blasted<br>
and ceramic coated--they look beautiful.<br>
<br>
My old heat exchangers had the insulation on them, with two metal tins (one<br>
along the bottom, and one along the curved part) over the outside of the<br>
insulation, with everything held on by a series of metal straps.<br>
<br>
I'm leaning towards not putting the insulation back on. I understand that<br>
after 1973, VW quit putting insulation on these anyway. My insulation is<br>
pretty nasty (oil soaked, torn, etc) and if I can get by without it, I think<br>
I would like to. What is the collective wisdom on foregoing the insulation?<br>
If climate makes a difference, I live in Northern California.<br>
Is there any modern replacement?<br>
<br>
Next, assuming I forgo the insulation, should I still put on the two metal<br>
tin pieces on each side? Are there any vendors that still sell the original<br>
(or similar) clamps? I'd rather not use generic spiral-tooth hose clamps<br>
if I can find something similar to the original look.<br>
<br>
Once I get some time, hopefully this weekend, I'll post pictures of my<br>
progress to-date and send a link to the gallery.<br>
<br>
Thanks in advance,<br>
<br>
Jacob<br>
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