I had about the same thoughts as I proceeded to install the EMPI adapter.
My thought:" When the hell are these two valves ever going to fall into
sync?"
Is the 5/8: freeze plug you mention the cup type or shallow dome"
Is there any danger of the installation process breaking the oil filter
mount when it is installed with a hammer blow?
I was a little concerned when I got no instruction with the Empi adapter.

Thanks
Stan Wilder

On Wed, 26 Sep 2001 23:52:35 -0700 "Coby Smolens" <cobys5@home.com>
writes:
> First time I've had to look at the list in DAYS... Sorry to chime in
> so
> late. Stan, the ball/spring arrangement in the OE filter mount is a
> relief
> valve that allows oil to bypass the filter in the event of filter
> restriction or VERY cold weather. This relief valve should be
> PLUGGED when
> installing the sandwich adapter. The sandwich adapter has its own
> relief
> valve, which has a tougher spring and therefore a higher relief
> pressure.
> This is necessary because line resistance in the oil hoses and
> cooler(s) can
> raise the pressure enough to cause the OE relief valve to open and
> oil to
> bypass the cooler. We use a shallow 5/8" freeze plug, pressed
> directly into
> the opening for the OE valve, from the bottom. We just tap it in
> with a
> drift. This plug used to be part of the kit supplied by
> manufacturers of oil
> cooler kits like RVEECO and Gandalf's Garage. It's available at any
> good
> FLAPS.
>
> Regards -
>
> Coby Smolens
> Valley Wagonworks
> VW Bus and Vanagon Specialists
> "Intimately acquainted with VW Vans since 1959"
> 1535 SF Drake Blvd, San Anselmo, CA 94960
> 415-457-5628
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On
> Behalf
> Of Stan Wilder
> Sent: Thursday, September 20, 2001 5:09 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Sandwich oil cooler adapter question
>
>
> I just finally got around to installing the axillary oil cooler on
> my  83
> Westfalia Air Cooled.
> I installed the additional cooler by using an Empi sandwich type
> adapter
> that goes between the oil filter and the original filter mount.
> I've got a question:
> I noticed that the sandwich adapter and the original oil filter
> mount
> both have check valves in them. Does this dual check valve scenario
> present any problems?.
> Seems to me that they would hardly ever even get into sync except at
> high
> pressure.
>
> Stan Wilder
> 83 Air cooled Westfalia
> ________________________________________________________________
> GET INTERNET ACCESS FROM JUNO!
> Juno offers FREE or PREMIUM Internet access for less!
> Join Juno today!  For your FREE software, visit:
> http://dl.www.juno.com/get/tagj.
>
>