Bob,
The Purolator filter I was referring to was the PER1A. I actually looked at
one. At the lbc equivalent of the hot stove league (and does that apply to
summer nattering?), we discussed filters. I also queried a Ford engineer.
The take is that while the filters may be the physical equivalent, there are
different applications. The AC Delco PF2 may not need the valve in GM cars
for which it is designed. What is even more interesting is that Tom
(Josefec) pulled out an AC Delco of the short variety, which is the size of
the recommended MG filter. It had the valve. The Ford Motorcaraft box has a
list of equivalents, but cautions they may not be an exact replacement for
the application.
Tom also showed me a Penziol PZ1, which is constructed a little differently.
There are two sets of holes that are off set. You have to look carefully
under the second set to see the valve. I missed it.
I'll go with the Penzoil because it looks like the coffee mug I use at work.
I assume the filters are better because the tab on the lid of the mug tore
off years ago.
Although I might just go with any brand filter if I can find some cheap
green spray paint that approximates what my engine used to look like.
Jack
> ----------
> From: mgbob@juno.com[SMTP:mgbob@juno.com]
> Sent: Sunday, August 09, 1998 9:07 PM
> To: Feldman, Jack (Jack)
> Subject: Re: Oil Drain Back kValve
>
> Jack,
> The PH43 that I took off the MGB a few weeks ago had the black rubber
> ring/flap inside, as does the spare filter on the shelf. I changed the
> Fram filter in the TD today, PH 3600, and it too had the ring/flap as did
> its replacement.
> Could the filter that you examined have been for a different
> application, one that does not need the drain-back valve?
> Bob
>
> On Sun, 9 Aug 1998 20:20:49 -0500 "Feldman, Jack (Jack)"
> <jack@lucent.com> writes:
> >I had always thought the drain back valve was the rubber ring that you
> >could
> >see through the holes surrounding the large threaded center hole. The
> >NAPA
> >1515 had a diagram of the wonderful features, and showed the ring. I
> >have
> >been reading bout the various filters used by folks on the net.
> >Inspired by
> >the number of possibilities, and a sale at the local Track Auto I went
> >to
> >buy some filters. Didn't see any ring on the Puralator, Delco, or
> >Fram. The
> >only one that had the ring was the Ford. All were physically the same
> >except
> >for the rubber ring that I had always thought was the anti drain back
> >valve.
> >
> >
> >Here is my question. If some of the folks have been happily using Fram
> >and
> >Purolator where are the anti drain back valves on those filters?
> >
> >Jack
> >
>
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