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I had the misfortune of installing one of the lip-type seals that
Randall recommends against in my TR4 back in the late 1990s. I got
the kit from either Moss or British Frame & Engine (Sp?) and it
required machining the scroll off. It never worked completely, and
seems to be getting worse with age. I'm planning to pull and reseal
the engine sometime soon and am wondering if there's anything that
can be done to reduce the leakage with an alternative seal or
something other than obtaining a new crankshaft?<br>
<br>
Thanks.<br>
<br>
Dean Mericas<br>
Austin, TX<br>
1965 TR4 / 1963 Jaguar Mk2 (for sale!) / 1974 Alfa Romeo 2000 GTV /
1976 Alfa Romeo Giulia Nuova Super 2000<br>
<br>
<div class="moz-cite-prefix">On 6/18/2018 1:00 PM,
<a class="moz-txt-link-abbreviated" href="mailto:triumphs-request@autox.team.net">triumphs-request@autox.team.net</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.9.1529344803.30320.triumphs@autox.team.net">
<pre wrap="">------------------------------
Message: 2
Date: Sun, 17 Jun 2018 21:13:47 -0700
From: "Randall" <a class="moz-txt-link-rfc2396E" href="mailto:TR3driver@ca.rr.com"><TR3driver@ca.rr.com></a>
To: "'Robin Watson'" <a class="moz-txt-link-rfc2396E" href="mailto:robinwmgb@gmail.com"><robinwmgb@gmail.com></a>, <a class="moz-txt-link-rfc2396E" href="mailto:triumphs@autox.team.net"><triumphs@autox.team.net></a>
Subject: Re: [TR] TR 3 A REAR ENGINE SEAL
Message-ID: <635AFA26C07B4A8398E0946330508168@RYPC>
Content-Type: text/plain; charset="us-ascii"
Yes, that's right. When setting with the mandrel, use shellac on the faces
against the block and main cap. Not on the scroll area.
Later, when doing the final assembly with the crankshaft in place, it
wouldn't hurt to paint a little shellac on the seal faces where they meet.
Two other points:
1) There appears to be an error in the mandrel dimensions given in the
workshop manual. See attached diagram.
2) There is an updated "Viton" seal available, that still uses the scroll
but adds a lip type seal. Highly recommended. Invented by a German TR4
racer who was upset about being black flagged when his TR4 "marked it's
spot".
<a class="moz-txt-link-freetext" href="http://www.tr4-racing.de/eng/madmarx-racing.html">http://www.tr4-racing.de/eng/madmarx-racing.html</a>
IMO, you should stay away from the other lip type seal offered by some other
vendors, as it requires the scroll part of the crankshaft to be machined
away.
-- Randall
56 TR3 TS13571L once and future daily driver
71 Stag LE1473 - awaiting engine rebuild
71-2-3 Stag - awaiting gearbox rebuild
</pre>
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<br>
<pre class="moz-signature" cols="72">--
"Thousands and thousands have lived without love -
not one without water." - Katharine Hayhoe, Ph.D.</pre>
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