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[GMCnet] Oil Filter Magnet [message #81770] |
Sat, 24 April 2010 17:17 |
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USAussie
Messages: 15912 Registered: July 2007 Location: Sydney, Australia
Karma: 6
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G’day,
Dan could you take a picture of the magnet that Joe Mondello recommends be
inserted in the oil filter.
All of the ones I've ever seen go on the outside.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
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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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Re: [GMCnet] Oil Filter Magnet [message #81891 is a reply to message #81777] |
Mon, 26 April 2010 00:55 |
Adrien G.
Messages: 474 Registered: May 2008 Location: Burns Flat, OK 73624
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Dan,
It could be that the magnet inside, which is after the filtering media, may possibly last longer in collecting the few particles remaining.
In that thought, one outside and one inside should really do a bang of a job.
Non ferrous particles are not subjected to the magnets, also with destructive capabilities, so that would be another subject for another day.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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Re: [GMCnet] Oil Filter Magnet [message #81903 is a reply to message #81770] |
Mon, 26 April 2010 07:58 |
fred v
Messages: 999 Registered: April 2006 Location: pensacola, fl.
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what about sticking a computer hard drive mag. into the filter?
i've been sticking one on the outside but i don't think it does much there.
Fred V
'77 Royale RB 455
P'cola, Fl
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Re: [GMCnet] Oil Filter Magnet [message #81924 is a reply to message #81903] |
Mon, 26 April 2010 10:18 |
midlf
Messages: 2212 Registered: July 2007 Location: SE Wisc. (Palmyra)
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fred v wrote on Mon, 26 April 2010 07:58 | what about sticking a computer hard drive mag. into the filter?
i've been sticking one on the outside but i don't think it does much there.
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You won't know until you cut them apart. Try an few and see if there are particles stuck to the inside of the filter can in the location of the magnet.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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Re: [GMCnet] Oil Filter Magnet [message #81952 is a reply to message #81770] |
Mon, 26 April 2010 13:18 |
fred v
Messages: 999 Registered: April 2006 Location: pensacola, fl.
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i've cut open one with the wrap around mag. and you can see what it does. i'll try the computer mag inside next change. these are really powerful magnets and are free.
Fred V
'77 Royale RB 455
P'cola, Fl
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Re: [GMCnet] Oil Filter Magnet [message #81991 is a reply to message #81923] |
Mon, 26 April 2010 17:12 |
GMC_LES
Messages: 569 Registered: October 2009 Location: Montreal
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When placing a magnet inside a filter through the threaded hole, you are
placing it on the clean side of the filter element. It will collect a film
of ferrous sludge during use. This brings me to ask this one very important
question:
What would happen to your engine if for some unknown reason, That blob of
fine ferrous particles broke loose from that magnet and flowed downstream to
all the critical parts of your engine?
Placing a magnet on the exterior of the filter allows the ferrous crud to
collect on the dirty side of the filter element. Any ferrous particles that
came loose from the magnet would be caught by the filter. Any particles that
pass through the filter element would be small enough and few enough that
they shouldn't cause any damage. This would be no worse than an engine
running with no magnet at all.
I know I will not be taking any chances, so I'll stick to external magnets
or oil pan magnets. They both work very well at collecting the majority of
ferrous particles circulating in the oil.
Thanks,
Les Burt
Montreal
1975 Eleganza II 26ft
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1975 Eleganza 26ft
A work in Progress
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Re: [GMCnet] Oil Filter Magnet [message #81992 is a reply to message #81991] |
Mon, 26 April 2010 17:19 |
fred v
Messages: 999 Registered: April 2006 Location: pensacola, fl.
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Les Burt wrote on Mon, 26 April 2010 17:12 |
When placing a magnet inside a filter through the threaded hole, you are
placing it on the clean side of the filter element. It will collect a film
of ferrous sludge during use. This brings me to ask this one very important
question:
What would happen to your engine if for some unknown reason, That blob of
fine ferrous particles broke loose from that magnet and flowed downstream to
all the critical parts of your engine?
Placing a magnet on the exterior of the filter allows the ferrous crud to
collect on the dirty side of the filter element. Any ferrous particles that
came loose from the magnet would be caught by the filter. Any particles that
pass through the filter element would be small enough and few enough that
they shouldn't cause any damage. This would be no worse than an engine
running with no magnet at all.
I know I will not be taking any chances, so I'll stick to external magnets
or oil pan magnets. They both work very well at collecting the majority of
ferrous particles circulating in the oil.
Thanks,
Les Burt
Montreal
1975 Eleganza II 26ft
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hmm, good point. wonder what Mondelo would say to that.
Fred V
'77 Royale RB 455
P'cola, Fl
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Re: [GMCnet] Oil Filter Magnet [message #81993 is a reply to message #81991] |
Mon, 26 April 2010 17:27 |
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USAussie
Messages: 15912 Registered: July 2007 Location: Sydney, Australia
Karma: 6
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Burt,
I agree with what you have noted below, however, it seems to me that Joe
Mondello would not be a proponent of inserting the magnet on the clean side
of the filter unless he had good experience doing so.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Les Burt
Sent: Tuesday, 27 April 2010 8:13 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Oil Filter Magnet
When placing a magnet inside a filter through the threaded hole, you are
placing it on the clean side of the filter element. It will collect a film
of ferrous sludge during use. This brings me to ask this one very important
question:
What would happen to your engine if for some unknown reason, That blob of
fine ferrous particles broke loose from that magnet and flowed downstream to
all the critical parts of your engine?
Placing a magnet on the exterior of the filter allows the ferrous crud to
collect on the dirty side of the filter element. Any ferrous particles that
came loose from the magnet would be caught by the filter. Any particles that
pass through the filter element would be small enough and few enough that
they shouldn't cause any damage. This would be no worse than an engine
running with no magnet at all.
I know I will not be taking any chances, so I'll stick to external magnets
or oil pan magnets. They both work very well at collecting the majority of
ferrous particles circulating in the oil.
Thanks,
Les Burt
Montreal
1975 Eleganza II 26ft
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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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Re: [GMCnet] Oil Filter Magnet [message #81996 is a reply to message #81993] |
Mon, 26 April 2010 17:43 |
Dennis S
Messages: 3046 Registered: November 2005
Karma: 2
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Perhaps the thought is that if the filter would catch the metal why do you need to hold it out of the paper element with an external magnet -- where-as, with the magnet on the clean side it catches what the paper element does not...
Dennis Sexton
73 GMC
Germantown, TN
USA
-----Original Message-----
From: Rob Mueller <robmueller@iinet.net.au>
To: gmclist@temp.gmcnet.org
Sent: Mon, Apr 26, 2010 5:27 pm
Subject: Re: [GMCnet] Oil Filter Magnet
Burt,
I agree with what you have noted below, however, it seems to me that Joe
ondello would not be a proponent of inserting the magnet on the clean side
f the filter unless he had good experience doing so.
Regards,
ob Mueller
ydney, Australia
US '75 Avion-The Blue Streak TZE365V100428
SA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
rom: gmclist-bounces@temp.gmcnet.org
mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Les Burt
ent: Tuesday, 27 April 2010 8:13 AM
o: gmclist@temp.gmcnet.org
ubject: Re: [GMCnet] Oil Filter Magnet
hen placing a magnet inside a filter through the threaded hole, you are
lacing it on the clean side of the filter element. It will collect a film
f ferrous sludge during use. This brings me to ask this one very important
uestion:
What would happen to your engine if for some unknown reason, That blob of
ine ferrous particles broke loose from that magnet and flowed downstream to
ll the critical parts of your engine?
Placing a magnet on the exterior of the filter allows the ferrous crud to
ollect on the dirty side of the filter element. Any ferrous particles that
ame loose from the magnet would be caught by the filter. Any particles that
ass through the filter element would be small enough and few enough that
hey shouldn't cause any damage. This would be no worse than an engine
unning with no magnet at all.
I know I will not be taking any chances, so I'll stick to external magnets
r oil pan magnets. They both work very well at collecting the majority of
errous particles circulating in the oil.
hanks,
es Burt
ontreal
975 Eleganza II 26ft
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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Re: [GMCnet] Oil Filter Magnet [message #82000 is a reply to message #81993] |
Mon, 26 April 2010 17:49 |
GMC_LES
Messages: 569 Registered: October 2009 Location: Montreal
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I have a lot of respect for Dr Olds as he is obviously a very thorough
person when it comes to analyzing and correcting "weak links". I wasn't
questioning his knowledge or experience. For him, the internal magnet
obviously worked or he would not recommend it.
My honest thoughts on the magnet issue are that placing one on the "clean"
side of the filter media probably wouldn't pose any problems in real life.
Most magnets are strong enough to hold the particles very securely until the
magnet is removed and cleaned at a filter change. My question was more a
"What If" scenario to give people a little something to think about.
My own opinion is that I would rather not intentionally place my engine at
risk. An external magnet will do just as good a job for me.
Thanks,
Les Burt
Montreal
1975 Eleganza II 26ft
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Les Burt
Montreal
1975 Eleganza 26ft
A work in Progress
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Re: [GMCnet] Oil Filter Magnet [message #82059 is a reply to message #81777] |
Tue, 27 April 2010 07:52 |
Carleton Douglas[1]
Messages: 174 Registered: March 2006
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It could cause a blockage or restriction as it is a full flow filter
all the oil goes through the filter then to the engine, out side one
for me.
On Sat, Apr 24, 2010 at 5:13 PM, Dan Gregg <gregg_dan@hotmail.com> wrote:
>
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> I asked about that magnet because I was about to buy one of the big 75 dollar ones. He says this little strong magnet works better, because it is inside. Maybe snakeoil for all I know. Just relaying information from him.
> All in all, this has been an excellent gathering if you like technical stuff. Frady, Sirum, Mondello, Mac Daddy. The fella that has the expensive 23 footer blew his engine on the way up here. His presentation was given last evening by Byron Songer. I missed it as we were trying to finish up my Onan update before the rain got here. The guys did an excellent job putting this one together. there will be some excellent presentations put on the Eastern States website next week.
> Dan
> --
> Dan & Teri Gregg
>
> danandteri.blogspot.com
>
>
>
> ///Halon Automatic Fire Extinguishers
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--
Carleton Douglas
73 custom, by myself
Prescott, AZ
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Re: [GMCnet] Oil Filter Magnet [message #82061 is a reply to message #82059] |
Tue, 27 April 2010 08:11 |
Don A
Messages: 895 Registered: October 2008 Location: Dallas, TX
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It's interesting.
As Rob so fully analyzed, with the outside filter you don't know if the stuff would be caught in the filter media.
Mr. Mondello's inner mag would tell you if any is getting by. And since his has done this and recommends others do it, he must have caught some. Did he have an outside mag that missed some?
But what is most interesting. Back when these engines were new they didn't even recommend changing the filter with each oil change.
Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba [IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
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Re: [GMCnet] Oil Filter Magnet [message #82078 is a reply to message #82061] |
Tue, 27 April 2010 09:36 |
GMC_LES
Messages: 569 Registered: October 2009 Location: Montreal
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It sure would be interesting to see the results of placing both an external
AND an internal magnet on the same oil filter. Inspection after an oil
change would confirm whether or not the external magnet is doing an
efficient job of trapping ferrous debris. A Filtermag unit has large
powerful magnets that create a magnetic field much larger than any small
internal magnet could produce. This should make the Filtermag unit more
effective so I would expect to see very little if any debris on the internal
magnet during such a test.
I am concerned about the risk of ferrous debris detaching from an internal
magnet. During normal operation without a magnet, a random microscopic
ferrous particle could pass through the engine with negligible effect. Add a
magnet that collects blobs of ferrous goop and you have potential for such a
blob to break loose and contaminate the engine. This would be like passing
lapping compound through the oiling system. As I previously stated though, I
doubt that that would happen, but it is a possibility.
Thanks,
Les Burt
Montreal
1975 Eleganza II 26ft
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Les Burt
Montreal
1975 Eleganza 26ft
A work in Progress
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