[Healeys] where does the oil leak begin if the crank seal and the new seal are not the cause

[Michael Salter]

Yes Mirek, the gasket shown is part of the "conversion" or "lower" engine
set.
The oil seal housing used with the lip seal set does not come with a gasket
but Moss supplies a tube of Hylomar to be used to seal between the seal
housing and the block face.
When I have done these conversions in the past I actually cut a thin paper
gasket to use there as I have never been a big fan of "gaskets in a tube".

M

On Wed, Apr 28, 2021 at 3:15 PM <m.g.sharp at sympatico.ca> wrote:

> Mike,
>
>
>
> Just for clarity, when you talk about the “Moss rear gasket … is a Payen
> kit”  I think you are referring to the bottom-end gasket set, not the oil
> seal conversion kit – right?  I guess what I am asking in too many words is
> whether the rear engine plate gasket you illustrated in the phots comes
> with the oil conversion kit – I didn’t think so.
>
>
>
> That may not resolve Bob’s question about how oil is getting into his bell
> housing, but I was trying to make the point that they are two separate
> things – the conversion kit and the rear plate gasket.
>
>
>
> *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Michael
> Salter
> *Sent:* April 28, 2021 2:05 PM
> *To:* Robert Begani <rfbegani at gmail.com>
> *Cc:* Austin Healey list <healeys at autox.team.net>
> *Subject:* Re: [Healeys] where does the oil leak begin if the crank seal
> and the new seal are not the cause
>
>
>
> The Moss rear gasket, which based upon the packaging is a Payen kit, seems
> to fulfil the requirement of sealing around the back end of the cam.
>
> I can't believe that John actually entirely missed installing the back
> plate gasket so I don't really understand the issue.
>
>
>
> M
>
>
>
>
>
>
>
> On Wed, Apr 28, 2021 at 12:27 PM <rfbegani at gmail.com> wrote:
>
> Listeners:
>
>
>
> 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.
>
>
>
>
>
> 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
>
> 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.
>
>  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.
>
>
>
>
>
> 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.
>
>
>
> 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.
>
> .
>
> Comments?
>
>
>
> Bob Begani
>
>
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>
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