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A worn/defective/brittle front gearbox seal--in cars that have
them--will contribute oil in the bellhousing. We tore down our BN2's
engine when it peed a puddle, installed a rear main seal and then
discovered the oil probably came from a gearbox seal that all but
fell apart in my hand.<br>
<br>
<div class="moz-cite-prefix">On 4/28/2021 11:02 AM,
<a class="moz-txt-link-abbreviated" href="mailto:rfbegani@gmail.com">rfbegani@gmail.com</a> wrote:<br>
</div>
<blockquote type="cite"
cite="mid:073101d73c58$b8eb3590$2ac1a0b0$@gmail.com">
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<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif">Merk:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif">If
the engine had the new modified seal installed, it was
removed and was dry, then from where does the oil come that
is entering the bell housing. It must be coming from above
the crankshaft. Where is the leak is the question? Maybe
that tiny little gasket material going around the engine
plate is not sufficient? <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif">Bob<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> <a class="moz-txt-link-abbreviated" href="mailto:m.g.sharp@sympatico.ca">m.g.sharp@sympatico.ca</a>
<a class="moz-txt-link-rfc2396E" href="mailto:m.g.sharp@sympatico.ca"><m.g.sharp@sympatico.ca></a> <br>
<b>Sent:</b> Wednesday, April 28, 2021 1:11 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:rfbegani@gmail.com">rfbegani@gmail.com</a><br>
<b>Subject:</b> RE: [Healeys] where does the oil leak
begin if the crank seal and the new seal are not the cause<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-CA">Bob, My understanding is
that they are two different things, the rear main oil seal
kit is one thing and the gasket for the rear plate is
another. I would not expect the MOSS kit would not have the
rear plate gasket.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">The parts diagrams shows
there is only one gasket between the block and the rear
engine plate. I do not think there is any additional gasket
for a “cam drain”.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA">Mirek<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> Healeys <<a
href="mailto:healeys-bounces@autox.team.net"
moz-do-not-send="true">healeys-bounces@autox.team.net</a>>
<b>On Behalf Of </b><a href="mailto:rfbegani@gmail.com"
moz-do-not-send="true">rfbegani@gmail.com</a><br>
<b>Sent:</b> April 28, 2021 12:27 PM<br>
<b>To:</b> Austin Healey list <<a
href="mailto:healeys@autox.team.net"
moz-do-not-send="true">healeys@autox.team.net</a>>;
'John and Kerry Rowe' <<a
href="mailto:jtkarowe@gmail.com" moz-do-not-send="true">jtkarowe@gmail.com</a>>;
'David Nock' <<a href="mailto:healeydoc@gmail.com"
moz-do-not-send="true">healeydoc@gmail.com</a>><br>
<b>Subject:</b> [Healeys] where does the oil leak begin if
the crank seal and the new seal are not the cause<o:p></o:p></p>
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</div>
<p class="MsoNormal"><span lang="EN-CA"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">Listeners:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">It
has been explained by some members of this group that the
rear Mounting Plate Gasket in the Moss kit is not sufficient
to contain the oil back of the camshaft drain. Now I am not
knowledgeable on the conditions of the rear mount plate and
the gasket, However, John Rowe after 10 years of living with
oil leaks even with the modified seal installed, removed the
trans, flywheel, mounting plate etc, and found it dry. Let
us review what he did find.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><o:p> </o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:18.0pt">I fitted the modified seal 10 years
ago and have always had an oil leak since. After
finally removing the gearbox for repair last month I removed
flywheel etc to have a look at it. I removed the backing
plate and no leaks were identified around the seal, it was
totally dry. However, the back of the camshaft drain was a
different scenario. I then noticed there should have been a
gasket according to the books, which mine did not have. I
had used a silicone gasket maker in that area and that
failed (didn't work). I made a thick 1.6mm (1/16inch) gasket
and now think I have solved the leaks problem<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt">Bob, The
gasket I made only had a 'cutout' for the crankshaft itself.
The remainder covered the back of the camshaft opening,
which runs down to drain back into the block. It looks like
an inverted teardrop.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt"> It covers
the whole machined area of the rear of the block. I put
permatex sealant all over the flat machined area especially
around the camshaft opening. This was done with the engine
in- situ while the gearbox was removed, quite easy but heavy</span>.<o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">What
say you to those who are familiar with the rear of the
engine, the rear plate, and the overall rear mounting plate
gasket. Is there are missing gasket in the Moss Kit? Was
there ever a gasket for the area? Should the rear plate
gasket be redesigned to include more coverage? Should we
just forget about the Moss gasket and construct gasket as
John had done to solve the oil leaks forever.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">The
reason I ask this of the Group, I will next fall have to
remove the trans etc. to install a new clutch plate and want
to be prepared to do something to stop the leaking of oil
even thought the installation of PVC system has greatly
reduced the volume.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">Comments?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:18.0pt;font-family:"Arial",sans-serif">Bob
Begani<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:14.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span><br>
</p>
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