<VV> Oil filter gasket design

[RoboMan91324 at aol.com]

Lonzo; et al,

The use of a paper gasket may solve one problem but create another.  My 
understanding of the problem is that the outer gasket seals before the inner 
gasket.  If you crank down on the bolt enough to make the inner gasket seal, the 
outer gasket is cut between the edge of the filter and the mounting surface.  If 
you use a paper gasket on the outer seal, it may be too thin to seal.  In 
effect, the inner gasket is thick enough that it will fully compress before the 
paper gasket is compressed.  Maybe the outer edge makes contact soon enough that 
this is not a problem but there may also be variations from production run to 
the next that causes a problem.

As I see it, both seals need to be sufficiently compressible to allow both 
seals to seat properly.  Considering the method of mounting, the outer seal 
needs to make contact first unless the inner seal is quite compressible.  Even 
then, the outer paper seal may seal at idle but spurt at higher speeds when the 
oil pressure increases.

Any ideas on this?

Doc
~~~~~~~~~~~~~~~
In a message dated 8/16/2005 8:25:49 AM Pacific Daylight Time, 
virtualvairs-request at corvair.org writes:

> Message: 2
> Date: Tue, 16 Aug 2005 10:02:27 EDT
> From: LonzoVair at aol.com
> Subject: Re: <VV> Oil filter gasket design
> To: hmlinc at sbcglobal.net, corvair at mts.net, BobHelt at aol.com
> Cc: virtualvairs at corvair.org
> Message-ID: <7a.7982410a.30334bf3 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
> 
> In a message dated 8/16/2005 1:36:34 AM Eastern Daylight Time, 
> hmlinc at sbcglobal.net writes:
> <<I 
> for 
> the outer edge. If you had a supply of those, you could probably discard the 
> U gasket and use those. NOTE - I've NOT tested this theory.>>
> 
> JR brings up a good idea... the thick paper gasket used on the 90 degree a/c 
> & smogger engines *SHOULD* fit the outside... that is as long at the edge of 
> the filter is level all the way around...
> Now why didn't *I* think of that....
> ;-)
> Later,
> Lonzo
>