I'm not all into bypass filtration. I made one comment that I was going to experiment with it. I have superb UOA's using nothing but quality oil and filters.
Question on Oil Filter Magnets
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While it's true that magnetic oil filtration only removes ferrous particles, their removal will protect softer metals from damage.
Does anyone have experience of placing a magnet inside an oil filter?
Yes. I use some very strong magnets in the center tubes of some of my filters. I know this is going to disturb some, but the filters these go into have no internal bypass at all. I can use much larger and more powerful magnets directly in the fluid, and they are only burdened with capturing material that passes through the filter media. The larger stuff caught by the filter media never sees them.
The type I am using are very powerful. Almost impossible to separate two of them by hand. Difficult to place in the filter because you have to get the poles right or one magnet will suck another one straight off of the other side. Placed right, they never come off of the tube wall. It's working for me.
The type I am using are very powerful. Almost impossible to separate two of them by hand. Difficult to place in the filter because you have to get the poles right or one magnet will suck another one straight off of the other side. Placed right, they never come off of the tube wall. It's working for me.
DW:
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
which do you use and how do you get them?
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
So you're saying that if the filter contains a bypass valve, an internal magnet is ill advised?
Originally Posted by ekpolk
DW:
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
which do you use and how do you get them?
I had some hi temperature neo magnets made up for me by K&J Magnets.
DW:
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
I had some hi temperature neo magnets made up for me by K&J Magnets.
Originally Posted by ekpolk
DW:
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
which do you use and how do you get them?
I see a fine paste that is messy looking upon wiping down with a paper towel. I reuse them. I dump the filter, take a screwdriver and gently release them from the tube wall. I buy the highest customer rated N52 grade neodymium magnets I can find on Amazon.
Nothing that's run long enough for me to do reliable UOA comparisons yet. Started with spin-on transmission filters due to solenoid sensitivity to contamination.
DW:
What do you see on them after the filter is removed? Do you re-use them, and if so, how do you get them out of the slippery mess that is a used filter? And to finish the interrogation
I see a fine paste that is messy looking upon wiping down with a paper towel. I reuse them. I dump the filter, take a screwdriver and gently release them from the tube wall. I buy the highest customer rated N52 grade neodymium magnets I can find on Amazon.
Nothing that's run long enough for me to do reliable UOA comparisons yet. Started with spin-on transmission filters due to solenoid sensitivity to contamination.
Originally Posted by harry j
So you're saying that if the filter contains a bypass valve, an internal magnet is ill advised?
No. I'm saying that because the filters have no internal bypass, they are never going to be burdened with catching a single spec that can't make it through the filter media, so the magnet's entire capacity can be fully reserved for particles smaller than filtration level. None of the surface area will ever be taken up by particles that had no chance of getting through filter media anyway.
Just makes better use of the surface area.
So you're saying that if the filter contains a bypass valve, an internal magnet is ill advised?
No. I'm saying that because the filters have no internal bypass, they are never going to be burdened with catching a single spec that can't make it through the filter media, so the magnet's entire capacity can be fully reserved for particles smaller than filtration level. None of the surface area will ever be taken up by particles that had no chance of getting through filter media anyway.
Just makes better use of the surface area.
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Originally Posted by DGXR
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Yep, I'd be nervous putting magnets inside the center tube on the clean side of the media.
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Yep, I'd be nervous putting magnets inside the center tube on the clean side of the media.
I understand that N52 Neo magnets can't come in hi temp versions, for some reason the top performing hi temp mags are N44.
Oops, that should have been N42 instead of N44.
Originally Posted by DGXR
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Good point, but there are not a lot of good ways to do that unless you have a common filter size that a magnafilter is made for.
The external magnets are nice, but limit the magnet's effect by a huge margin.
I'm not terribly concerned. Plenty of transmissions out there that have magnets directly under nothing but a rock catcher screen filter. How much worse can "after a filter" be than "before basically no filter at all"?
It's kind of a moot point anyway. All of the applications I use them for currently actually have a secondary filter further downstream.
Best one I've done is my KTM dirtbike. Cartridge filter primary allows me to put the magnets outside of the primary filter's media.
That's the only engine oil filter that's gotten magnets so far. Only because of the shared sump.
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Good point, but there are not a lot of good ways to do that unless you have a common filter size that a magnafilter is made for.
The external magnets are nice, but limit the magnet's effect by a huge margin.
I'm not terribly concerned. Plenty of transmissions out there that have magnets directly under nothing but a rock catcher screen filter. How much worse can "after a filter" be than "before basically no filter at all"?
It's kind of a moot point anyway. All of the applications I use them for currently actually have a secondary filter further downstream.
Best one I've done is my KTM dirtbike. Cartridge filter primary allows me to put the magnets outside of the primary filter's media.
That's the only engine oil filter that's gotten magnets so far. Only because of the shared sump.
Originally Posted by harry j
I understand that N52 Neo magnets can't come in hi temp versions, for some reason the top performing hi temp mags are N44.
This is true. The systems I've used them for barely operate above the temporary demagnetization temp, so I've had no issues with capturing material.
For high temp systems, I would definitely do high temp magnets.
I understand that N52 Neo magnets can't come in hi temp versions, for some reason the top performing hi temp mags are N44.
This is true. The systems I've used them for barely operate above the temporary demagnetization temp, so I've had no issues with capturing material.
For high temp systems, I would definitely do high temp magnets.
I am using the spin-on type magnetic filter on my Turbo Optima: Magnefine "MagnaFilter" Magnetic engine oil pre-filter (#3002015)
https://www.ebay.com/itm/MAGNAFILTER-MAGNETIC-OIL-PRE-FILTER-By-BOSS-Components-/150572396316
https://www.ebay.com/itm/MAGNAFILTER-MAGNETIC-OIL-PRE-FILTER-By-BOSS-Components-/150572396316
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Originally Posted by DoubleWasp
Originally Posted by DGXR
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Good point, but there are not a lot of good ways to do that unless you have a common filter size that a magnafilter is made for.
sump.
Where's the photo of the 4 or 5 small magnets stuck to the base plate. That method seems to work pretty slick.
Originally Posted by DGXR
Honestly I would argue that it's better to place the magnet upstream of the filter media. This will keep more particles from reaching the filter media in the first place, therefore extending its service life. This assumes that some of the ferrous particles are large enough to be caught in the filter media, which I am not 100% sure of.
Good point, but there are not a lot of good ways to do that unless you have a common filter size that a magnafilter is made for.
sump.
Where's the photo of the 4 or 5 small magnets stuck to the base plate. That method seems to work pretty slick.
Agreed, but nearly as much magnet area as I have. I use 4 magnets 6" long and 1/2" wide. Quite a bit above that of a few button magnets.
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