Magnetic Oil Drain Plugs
08-20-2003, 03:24 PM
#21
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Originally posted by PeaceLove&S2K
I'm not very familiar with the construction of an engine, but aren't S2000 engines mostly aluminium? Is aluminium one of the metals that would cling on to magnets?
I'm not very familiar with the construction of an engine, but aren't S2000 engines mostly aluminium? Is aluminium one of the metals that would cling on to magnets?
The block, head, oil pan, and are the 3 big aluminum parts and non-magnetic. Just about anything that moves at high RPM would be a type of steel and therefore magnetic(see parts below).
My old Z-cars(2-71s & a 76) had magnetic drain plugs (it must be a Jap-thing) and they always had a fine metallic powder attached to them. I believe this to be normal, small chunks or slivers =
08-20-2003, 06:05 PM
#23
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If you see big metal shavings then your oil filter isn't very good. A submicronic oil filter will only let < 10 microns through so yeah get out the microscope to see it.
08-20-2003, 11:02 PM
#24
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FormerH22a4, which oil filter do you use?
I had a Porsche 911 SC and it had magnetic plugs. At every oil change I noticed metallic powder on them. You can really see them on the paper towel used to wipe the plug.
I had a Porsche 911 SC and it had magnetic plugs. At every oil change I noticed metallic powder on them. You can really see them on the paper towel used to wipe the plug.
08-21-2003, 03:50 AM
#26
I would not get to excited about filtering vs residue on these plugs. It seems to me that the particles have an opportunity to get caught by the magnet long before they get to the filter if the oil is not too viscous.
08-21-2003, 07:11 AM
#27
Registered User
Magnetic plugs are there for diagnostic purposes - if you find large metal particles, you are in trouble.
The tiny silt that accumulates is harmless.
The notion that it "protects" the engine is really not valid. Wear particles are only an issue of they are larger than the smallest engine tolerance. times two. The 2X is in case two particles get side by side in a tight engine passage. Otherwise, with the efficiency and filtering capacity of the oil filers available today, the mag plugs do zilch.
Like the MagVest, they appeal to buyer ignorance - I do not mean to insult, just ignorance in the sense of lack of applicable engineering knowledge.
I know of one case where the magnetic field of the plug in close proximity to a pan sensor caused a MIL situation. (not in an S2000)
The tiny silt that accumulates is harmless.
The notion that it "protects" the engine is really not valid. Wear particles are only an issue of they are larger than the smallest engine tolerance. times two. The 2X is in case two particles get side by side in a tight engine passage. Otherwise, with the efficiency and filtering capacity of the oil filers available today, the mag plugs do zilch.
Like the MagVest, they appeal to buyer ignorance - I do not mean to insult, just ignorance in the sense of lack of applicable engineering knowledge.
I know of one case where the magnetic field of the plug in close proximity to a pan sensor caused a MIL situation. (not in an S2000)
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