| Re: [GMCnet] Oil Filter Sandwich Plate O-Ring [message #324978 is a reply to message #324963] |
Sun, 15 October 2017 16:35  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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Larry,
I agree 100% with what Bob said as well as what you've been doing since it works, however, why not just use a round o-ring that is
sized properly for the groove in the first place?
I personally did not come up with the size of the o-ring; I contacted engineers at Parker Hannifin and gave them the dimensions of
the groove and they provided me with that part number.
The red silicone o-ring from Dorman also works just as the dry Fram o-ring but the Parker Hannifin o-ring is sized properly and you
wind up with a metal to metal fit.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Larry
Sent: Sunday, October 15, 2017 11:27 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Oil Filter Sandwich Plate O-Ring
JohnL455 wrote on Sat, 14 October 2017 08:46
> The oil filer ring works in a pinch to get you home. Pedantic Rob went into great detail to get to the bottom of this urban myth
and explain the > cold flow deformation and determine the correct part to use. I'm going with his research.
I used the Fram "square" O-ring for a few years and noted that when I changed oil, and took that cooler adaptor off to drain oil in
the cooler, that the "Square" gasket was always slightly deformed at one particular location and leaked just a little at that spot.
At one of the Greater Midwest Classics Rallys, I queried the great late Bob Drews about this. He said..."Well Larry, think about
this a second. you've got a gasket from a filter that is usually coated with a little oil, designed to be spun on. The oil allows
that to slide as it makes contact. You are using that gasket on an adaptor plate that is not being spun on...It is tightened in
place straight on by the center bolt holding the adaptor in place, and no need to put oil on the gasket. So don't lubricate that
gasket." So, I stoped putting a thin coat of oil on that gasket and have not had a deformation or leak since.Essentially treated it
as if it were a "round" O-ring.
Just a note, a lot of people move the gasket from the oil filter that they are taking off, to the oil filter adaptor. I have found
that the "Square" O-ring on the WIX 51258 does not fit on my oil cooler adaptor. That is why I buy and use JUST the "square"O-ring
from the Fram filter. Put a new O-ring in about every 3-4 oil changes.
Just my relatively informed, off the cuff, back yard mechanic, gut level, eyeball it up and guestimate, way of doing
things....that's all...
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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