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bluebus86
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Joined: September 02, 2010
Posts: 11075
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 Posted: Sun Jul 15, 2018 1:39 pm Post subject: Magnets For Oil Sump |
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If you source some low profile magnets, the magnets can be stuck on the inside of the sump plate, under the screen. There is space for a lot of magnets. A large area of magnets collects a lot of junk out of the oil verses a small drain plug magnet.
I used magnets about 3/16 inch tall on my sump plate.
I have a filter minisump on one Bug, magnets would not stick the the aluminum sump, so a steel disc was cut from sheet metal to fit in bottom of the minisump, with a hole in middle of disc for the drain plug. Magnets where then stuck to the disc, and disc and magnets fitted under the filter , at bottom of sump.
Make sure the magnets you use can take the heat. Some magnets, including very strong ones, lose their magnetism at typical motor oil temperatures. You can test them in an oven.
The current 356 Registry magazine has an article written in it about making a large area magnetic sump.
My Bug Has a Magnetic Personality, People Wave at My Bug All the Time.
Bug On!
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Danwvw
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Joined: July 31, 2012
Posts: 8892
Location: Oregon Coast
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| Posted: Sun Jul 15, 2018 2:59 pm Post subject: Re: Magnets For Oil Sump |
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Great Idea, The 356's had a huge magnet! Nowadays you can get the Neodymium magnets too. I should put some on my motors!
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1960 Beetle And 1679cc DP W-100 & Dual Zeniths! |
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jason_hamilton
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Joined: February 07, 2003
Posts: 1118
Location: Abbotsford, BC
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| Posted: Sun Jul 15, 2018 4:51 pm Post subject: Re: Magnets For Oil Sump |
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Use a regular hose clamp to attach a cow magnet (Google it) to the pickup tube. A 5/8 x 2-1/2 inch magnet has a surface area over 12 square inches.
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Jason Hamilton
1969 Karmann Ghia coupe
@MiddleAgedHoon |
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bomberbob
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Joined: May 17, 2015
Posts: 688
Location: Iowa
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| Posted: Sun Jul 15, 2018 7:11 pm Post subject: Re: Magnets For Oil Sump |
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Got any bad computer hard drives? Take it apart, pull the magnets out. Stick them to the outside of the metal oil cover. It will magnetize that section of the cover, and particles will stick to the inside. Those are not refrigerator magnets, they are strong.
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1968 Beetle (storage)
1990 Jetta GLI megasquirted, burning E85 (currently in heavy maintenance)
2004 Jetta turbo GLI
Marion, Iowa |
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goober
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Joined: May 03, 2003
Posts: 1183
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| Posted: Sun Jul 15, 2018 7:39 pm Post subject: Re: Magnets For Oil Sump |
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"..... magnets can be stuck on the inside of the sump plate, under the screen."
Have you ever tried putting magnets on the outside of the sump plate around the drain plug and compared the results of inside verses outside magnets? |
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TDCTDI
Samba Advocatus Diaboli
Joined: August 31, 2013
Posts: 12856
Location: North Carolina
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| Posted: Sun Jul 15, 2018 7:43 pm Post subject: Re: Magnets For Oil Sump |
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What good are magnets gonna do? Most of the wear surfaces are nonferrous, if you get metal on the magnets the engine is pretty much trashed at that point.
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Everybody born before 1975 has a story, good, bad, or indifferent, about a VW.
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Do something, anything, to your project every day, and you will eventually complete it. |
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OLD VW NUT
Samba Member
Joined: February 23, 2011
Posts: 2776
Location: High Desert of Washington 98823
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| Posted: Sun Jul 15, 2018 7:55 pm Post subject: Re: Magnets For Oil Sump |
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| bomberbob wrote: |
| Got any bad computer hard drives? Take it apart, pull the magnets out. Stick them to the outside of the metal oil cover. It will magnetize that section of the cover, and particles will stick to the inside. Those are not refrigerator magnets, they are strong. |
I removed the magnets on an old Seagate Elite 5.25" hard drive. First time I stuck two of them together I nearly got pinched by the two magnets. It took my shop vise and some locking pliers to get them apart. Those things could do bodily harm if you aren't careful with them. Those things are seriously strong!
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71 Ghia Coupe - stock body - no rust! Powered by a 2110 W/Dual HPMX 44's - Rancho Pro Street Transaxle - A/C by Gilmore
Other car - 2013 VW Golf TDI |
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73SlowBug
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Joined: November 28, 2017
Posts: 439
Location: PENNSYLVANIA
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| Posted: Sun Jul 15, 2018 8:07 pm Post subject: Re: Magnets For Oil Sump |
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I use an empi magnetic drain plug. Just a small rare earth magnet. I have no idea if it's worth having a sump magnet at all on our cars.
There is very little ferrous metal in our engines, as someone pointed out. But it was fairly inexpensive, and at the time I had no oil filter, so I figured it was better than just the sump screen. I'm running an oil filter now, but I left the magnetic plug on too. I've yet to see anything on it at all. I guess that's good. The magnet itself is amazingly strong. I think it is Neodymium. Im not sure of more magnets is better here, especially given the brass/aluminum/magnesium components of our engines for outnbering the iron/steel. I guess it's cheap insurance.
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bluebus86
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Joined: September 02, 2010
Posts: 11075
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| Posted: Sun Jul 15, 2018 8:49 pm Post subject: Re: Magnets For Oil Sump |
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| goober wrote: |
"..... magnets can be stuck on the inside of the sump plate, under the screen."
Have you ever tried putting magnets on the outside of the sump plate around the drain plug and compared the results of inside verses outside magnets? |
The magnetic field is shunted thru a metal plate such that the force of the magnet will be greatly diminished inside if magnets are attached outside of the sump plate.
Bug On!
_________________
Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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bluebus86
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Posts: 11075
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| Posted: Sun Jul 15, 2018 8:56 pm Post subject: Re: Magnets For Oil Sump |
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| TDCTDI wrote: |
| What good are magnets gonna do? Most of the wear surfaces are nonferrous, if you get metal on the magnets the engine is pretty much trashed at that point. |
The are likely more wear surfaces that are ferrous than not ferrous. The bearings and valve guides are half ferrous, half non ferrous. each of equal area. then we have ferrous to ferrous wear surfaces such as rockers, valve to valve seat, rings to cylinders, etc..
But even if non ferrous wear surfaces made up the majority, so long as there is ferrous wear, the magnet can remove the wear bits from circulation. I have magnets in engines that pick up metal bits and those engines are far from trash. some of these magnets have been in use since engine was new build.
Bug On! Use the force, the magnetic force!
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Help Prevent VW Engine Fires, see this link.....Engine safety wire information
Stop introducing dirt into your oil when adjusting valves ... https://www.thesamba.com/vw/forum/viewtopic.php?t=683022 |
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Eric&Barb
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Joined: September 19, 2004
Posts: 24764
Location: Olympia Wash Rinse & Repeat
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| Posted: Mon Jul 16, 2018 1:03 pm Post subject: Re: Magnets For Oil Sump |
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Magnets are not a bad idea, but you should look into getting an oil filter/pump like CB Maxi 2 or the VW of Mexico one. With using a quality off the shelf oil filter like WIX makes, you will hardly ever find any metal on the sump plate. The one time we did over 30,000 miles of pulling the sump plate at each 3,000 mile tune up found one flake of metal that had gotten wedged under the sump strainer.
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olspeed
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Joined: May 01, 2008
Posts: 489
Location: In the shadow of Denali, I still don't give a damn how they do it outside
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| Posted: Mon Jul 16, 2018 7:41 pm Post subject: Re: Magnets For Oil Sump |
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| Eric&Barb wrote: |
| Magnets are not a bad idea, but you should look into getting an oil filter/pump like CB Maxi 2 or the VW of Mexico one. With using a quality off the shelf oil filter like WIX makes, you will hardly ever find any metal on the sump plate. The one time we did over 30,000 miles of pulling the sump plate at each 3,000 mile tune up found one flake of metal that had gotten wedged under the sump strainer. |
If you found any metal in an engine with a filter you might want to split the filter and squeeze the oil from the media in a vise and then check it for particles as that will be an eye opener for sure.
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73SlowBug
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Joined: November 28, 2017
Posts: 439
Location: PENNSYLVANIA
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| Posted: Mon Jul 16, 2018 7:51 pm Post subject: Re: Magnets For Oil Sump |
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| Eric&Barb wrote: |
| Magnets are not a bad idea, but you should look into getting an oil filter/pump like CB Maxi 2 or the VW of Mexico one. With using a quality off the shelf oil filter like WIX makes, you will hardly ever find any metal on the sump plate. The one time we did over 30,000 miles of pulling the sump plate at each 3,000 mile tune up found one flake of metal that had gotten wedged under the sump strainer. |
The only problem with the vw of Mexico one is that it only fits the 4 bolt cams (without modification). Otherwise, it wuld be nice to have "oem quality" for piece of mind.
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Eric&Barb
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Joined: September 19, 2004
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Location: Olympia Wash Rinse & Repeat
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| Posted: Mon Jul 16, 2018 7:55 pm Post subject: Re: Magnets For Oil Sump |
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| 73SlowBug wrote: |
The only problem with the vw of Mexico one is that it only fits the 4 bolt cams (without modification). Otherwise, it wuld be nice to have "oem quality" for piece of mind. |
Would not be too hard to modify or have such done, but that is why as stated before to the OP "should look into".
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Eric&Barb
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Location: Olympia Wash Rinse & Repeat
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| Posted: Mon Jul 16, 2018 7:58 pm Post subject: Re: Magnets For Oil Sump |
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| olspeed wrote: |
If you found any metal in an engine with a filter you might want to split the filter and squeeze the oil from the media in a vise and then check it for particles as that will be an eye opener for sure. |
Just going from always having metal on the sump plate to only finding one flake in 30,000 miles was enough of an eye opener.
Replaced rod bearings in a used engine with 20,000 miles since last rebuild from a friend, and installed oil filter/pump. Got about 10,000 miles more before crank broke. Found the now used rod bearings in perfect shape with only slight polish to them in the thrust directions!
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