<VV> Special Oil Filter Bolt for Sender

Ron F Hinz ronh@owt.com
Tue, 10 Feb 2004 12:33:37 -0800


Much ado about not much!  The soft copper washer easily deforms when it's
tightened down and all of your flattening efforts are for entertainment
only.
RonH

----- Original Message ----- 
From: "airvair" <airvair@richnet.net>
To: "* Greenbrier Goon *" <greenbriergoon@hotmail.com>
Cc: <corvanatics@corvair.org>; <virtualvairs@skiblack.com>
Sent: Tuesday, February 10, 2004 2:06 PM
Subject: Re: <VV> Special Oil Filter Bolt for Sender


> I bought one of the "adapt-a-bolts" when they first came out. In order
> to get a ground from the sender to the engine it is necessary to use a
> metal washer instead of the usual fiber one. You've got to remember that
> the only other connection to the engine is through the filter, and it's
> seated on rubber seals.
>
> The "adapt-a-bolts" are supposed to come with a copper washer "gasket."
> However, the one I got was apparently stamped, not machined, and one
> quick run over a mill file showed it was anything but flat. No wonder it
> wouldn't seal. When you ask metal to seal to metal, it requires a
> perfectly flat surface. So, being a diemaker, I was going to have it
> surface ground. Since it was non-magnetic and too thin for any of the
> clamping materials available for the magnetic table, I had to hand
> finish it. Using a 4 place mic, I used the mill file to get it perfectly
> flat with both surfaces parallel to 4 places.
>
> Unfortunately, it STILL leaked, so I turned my attention to the engine
> filter "adapter" (as GM calls it). One pass with the mill file and I was
> shocked to see just how much the "gasket surface" for the oil filter
> bolt was warped. So after a bit of mill file work, the surface was trued
> up. The "adapt-a-bolt" FINALLY sealed, and has been in service on my '69
> for almost 10 years with no problem sealing.
>
> Regardless of whether someone uses an "adapt-a-bolt" or the stock bolt,
> I'd strongly recommend that everyone run a mill file over the adapter's
> bolt gasket surface. With the ones I've seen, it's a wonder that even
> the fiber gasket can seal some of them.
>
> -Mark
>
> * Greenbrier Goon * wrote:
> >
> > Hey everybody:
> >
> > I have one of those special oil filter bolts that allow a sender for a
gauge
> > to be threaded into it.
> >
> > I have a brass T with the oil pressure gauge sender and the oil pressure
> > switch in it.  The temp sender is in the stock oil pressure switch
location.
> >
> > Anyway, the bolt does not ground to anything when it is installed.
> > Therefore, the senders will not function.  I came up with a quickie
> > temporary solution by taking a piece of galvanized steel wire and
wrapping
> > one end around the base of the T and the other end around the fuel pump
> > block-off bolt.
> >
> > Does anyone have a more professional looking solution to this?
> >
> > Charles
> >
> > Greenbrier World:
> > http://www.c-zone.net/northgte/greenbrier.htm
> >
> > 1963 Greenbrier PG (soon to be 4 speed)
> > 1963 Corvair 95 4 Speed (soon to be scrap)
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