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Re: [TR] Scroll less seal fix

To: triumphs@autox.team.net
Subject: Re: [TR] Scroll less seal fix
From: Tony Drews <tony@tonydrews.com>
Date: Sun, 22 Nov 2020 10:03:34 -0600
Delivered-to: mharc@autox.team.net
Delivered-to: triumphs@autox.team.net
References: <SN6PR17MB22237F4472BEDC97E7690C5CDFFE0@SN6PR17MB2223.namprd17.prod.outlook.com> <CANzE1bGMoCqxRiW0TNoKjansjkoPJm3=nua9ozwB09rKvksP+A@mail.gmail.com>
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Two options -

Looks like Bob needs a new crank (the break will NOT polish out), the 
new ARE / Marx / Viton / No machining required seal would be a great 
option if the replacement crank still has the scroll.

If the new crank has been machined for the older seal, those kits are 
available from Moss or British Parts Northwest.  BP Northwest also sells 
the bare seal if you already have the modified scroll "housing" aluminum 
bits - it's only like $10.

If the crank is undersize for that seal, you can carefully cut a little 
off of the parting line to close it up and make sure the spring is 8 
inches long (it can be shortened too).  The last few of those I bought 
already had the spring at 8 inches long.

Here's the bare seal for the "I machined off the scroll" seal setup:

https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-for-rear-conversation-cna417k-cna418k.html
 


Here's the complete kit for that setup:

https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-tr2-to-tr4a.html

Here's the complete kit for the "I'm not going to machine the scroll out 
of my crank" setup:

https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-uprated-tr3-to-tr4a.html

Here's just the seal for that setup if you already have the aluminum 
housing:

https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/seal-rear-for-germany-conversion-kit-only.html

Cheers, Tony Drews

On 11/22/2020 8:05 AM, Geo Hahn wrote:
> Either I or others here do not understand Bob's problem.
>
> Sounds like he has a crank that has previously been machined (scroll 
> removed) and is looking for a seal that will work in spite of the 
> prior machining making the crank undersized due to incorrect instructions.
>
> Will the MadMarx seal work on such a crank? Maybe and worth checking 
> out, but seems unlikely to me.
>
> Sorry, I don't have an answer but hopefully can get the thinking on track.
>
> Geo
>
> On Sat, Nov 21, 2020, 8:39 AM Bob Nogueira <nogera@hotmail.com 
>
>     Some time in the recent past I thought I read that Moss Motors was
>     offering a optional Rear seal for those of us who years ago
>     Machined off the scroll to use the â??Newâ?? seal only to find out the
>     instructions had  the new surface too small.
>     I didnâ??t pay it much attention that crank was in the attic. Well
>     With the failure of my current crank I am now forced to use it or
>     find another crank.
>     Canâ??t find anything on Moss website. Anyone know about the
>     replacement seal?
>     Thanks
>
>
>     Bob Nogueira
>
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<html>
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  <body>
    <p>Two options - <br>
    </p>
    <p>Looks like Bob needs a new crank (the break will NOT polish out),
      the new ARE / Marx / Viton / No machining required seal would be a
      great option if the replacement crank still has the scroll.</p>
    <p>If the new crank has been machined for the older seal, those kits
      are available from Moss or British Parts Northwest.  BP Northwest
      also sells the bare seal if you already have the modified scroll
      "housing" aluminum bits - it's only like $10.</p>
    <p>If the crank is undersize for that seal, you can carefully cut a
      little off of the parting line to close it up and make sure the
      spring is 8 inches long (it can be shortened too).  The last few
      of those I bought already had the spring at 8 inches long.</p>
    <p>Here's the bare seal for the "I machined off the scroll" seal
      setup:</p>
    <p><a class="moz-txt-link-freetext" 
href="https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-for-rear-conversation-cna417k-cna418k.html";>https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-for-rear-conversation-cna417k-cna418k.html</a>
      <br>
    </p>
    <p>Here's the complete kit for that setup:</p>
    <p><a class="moz-txt-link-freetext" 
href="https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-tr2-to-tr4a.html";>https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-tr2-to-tr4a.html</a></p>
    <p>Here's the complete kit for the "I'm not going to machine the
      scroll out of my crank" setup:</p>
    <p><a class="moz-txt-link-freetext" 
href="https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-uprated-tr3-to-tr4a.html";>https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/rear-seal-conversion-kit-uprated-tr3-to-tr4a.html</a></p>
    <p>Here's just the seal for that setup if you already have the
      aluminum housing:</p>
    <p><a class="moz-txt-link-freetext" 
href="https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/seal-rear-for-germany-conversion-kit-only.html";>https://www.bpnorthwest.com/triumph/tr2-tr3-tr4-tr4a/engine-gaskets-seals/seal-rear-for-germany-conversion-kit-only.html</a></p>
    <p>Cheers, Tony Drews<br>
    </p>
    <div class="moz-cite-prefix">On 11/22/2020 8:05 AM, Geo Hahn wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CANzE1bGMoCqxRiW0TNoKjansjkoPJm3=nua9ozwB09rKvksP+A@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="auto">Either I or others here do not understand Bob's
        problem.
        <div dir="auto"><br>
        </div>
        <div dir="auto">Sounds like he has a crank that has previously
          been machined (scroll removed) and is looking for a seal that
          will work in spite of the prior machining making the crank
          undersized due to incorrect instructions.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Will the MadMarx seal work on such a crank? 
          Maybe and worth checking out, but seems unlikely to me.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Sorry, I don't have an answer but hopefully can
          get the thinking on track.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Geo</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Sat, Nov 21, 2020, 8:39 AM
          Bob Nogueira &lt;<a href="mailto:nogera@hotmail.com";
            moz-do-not-send="true">nogera@hotmail.com</a>&gt; wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div dir="auto">
            Some time in the recent past I thought I read that Moss
            Motors was offering a optional Rear seal for those of us who
            years ago Machined off the scroll to use the â??Newâ?? seal only
            to find out the instructions had  the new surface too small.
            <div>I didnâ??t pay it much attention that crank was in the
              attic. Well With the failure of my current crank I am now
              forced to use it or find another crank.</div>
            <div>Canâ??t find anything on Moss website. Anyone know about
              the replacement seal?</div>
            <div>Thanks </div>
            <div><br>
            </div>
            <div><img src="cid:85BCBD52-2819-4533-932D-3B29E229A557"
                moz-do-not-send="true"></div>
            <div><br>
              <div dir="ltr">Bob Nogueira </div>
            </div>
          </div>
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