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Is There A Magnetic Drain Plug That Fits The Dauntless?

Discussion in 'Early CJ5 and CJ6 Tech' started by maurywhurt, Feb 20, 2021.

  1. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I've been looking for a magnetic drain plug to fit the 225, but so far haven't been able to find one. Does anyone know of one that's available?

    Short of that, does anyone happen to know the thread size for the Dauntless' drain plug?
     
  2. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    My '34 Flathead, I found a small cylindrical magnet and attached it to the stock plug. Works great.

    Another tweak is to just put a large magnet on the outside of the oil pan.
     
    Rick Whitson likes this.
  3. Arnold Layne

    Arnold Layne Member

    Or stick a magnet on your oil filter. You won't get to see the debris unless you open up the filter but at least the debris is captured.
     
    PeteL and boopiejones like this.
  4. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Beach66Bum likes this.
  5. Glenn

    Glenn Kinda grumpy old man Staff Member

    I've always wondered how much material a magnet in a drain plug can actually catch. How far can it draw metallic particles that are in the oil?
     
  6. boopiejones

    boopiejones I can’t drive 55

    Rock auto says the 225 drain plug is 7/8-18. I did a google search and didn’t find any magnetic plugs that would fit.

    That said, the reviews for other magnetic plug sizes suggest that the magnet is not permanently affixed to the plug. So you could likely just stick a neo magnet on the end of your existing plug.

    Another option would be to drill into the end of the plug about 1/4 inch and drop a cylindrical magnet into the hole. I doubt that would ever fall out, but you could also put a dab of jb weld into the hole to make it extra secure. I’ll probably give this a shot next time I do an oil change, although my 198 uses a 1/2-20 plug for which there are magnetic options available.
     
  7. SFaulken

    SFaulken Active Member

    I usually just take an old speaker magnet, and stick it to the bottom of the oil pan.
     
    Rick Whitson likes this.
  8. Glenn

    Glenn Kinda grumpy old man Staff Member

    Inside or outside?
     
  9. Arnold Layne

    Arnold Layne Member

    Have seen both.........
     
  10. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Thank you to everyone who responded! I just found and ordered a magnetic drain plug in 7/8-18:

    (Update Feb. 28 : 7/8"-18 is NOT the correct thread for the V6 drain plug - see post #21)
     
    Last edited: Mar 2, 2021
    Beach66Bum likes this.
  11. SFaulken

    SFaulken Active Member

    If I happen to have the pan off for some other reason, I'll toss it in the bottom of the sump. But more often than not, just stick it on the bottom of the pan on the outside
     
  12. Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    magnets out of hard drive , will stick anywhere
     
  13. jeep2003

    jeep2003 Well-Known Member

    Thats exactly what i did on my mini. If you stick one on the oil pan the only way to clean it is to drop the pan. And if the magnet falls off or gets taken off for some reason you get a nice big clump of metal to suck up
     
  14. kenb

    kenb Cleverly disguised as a responsible adult

    I thought half the point of the magnet was to be able to monitor for the engine making metal. If the magnet is on the drain pan you can't really inspect it.
     
  15. Glenn

    Glenn Kinda grumpy old man Staff Member

    Right. My biggest concern is how much draw does a magnet have. How much can it really catch? Does it give a false sense of security?
     
  16. jeep2003

    jeep2003 Well-Known Member

    The drain plugs on my porsche have magnets and they come out very fuzzy. Particularly the first time i changed the tranny fluid. But it also doesnt have a filter. Fuzz is ok as long as there is no chunks. Anything to help clean the oil is a good thing. You wouldnt want any metal going through the oil pump either
     
  17. Buildflycrash

    Buildflycrash More or Less in Line. 2024 Sponsor 2022 Sponsor

    These should work . I ordered a set, One for engine one for transmission.

    .
     
  18. Keys5a

    Keys5a Sponsor

    I have bought a few 3/16" x 3/4" neodymium cylindrical shaped magnets, then drilled the drain plug about 3/8" deep with a 3/16" bit. Glued it in with a few drops of 2-part epoxy. These are stong enough to pull any ferrous metal particles from the circulating oil, especially if near the oil pickup. I rarely see but a trace of grey sludge.
    I wouldn't bother with conventional magnets as they are not very strong.
    Magnets are much more effective in a transmission drain plug. They tend to collect much more material, and I have collected a couple large chunks of broken teeth that would have been fatal if they weren't captured and went into the mesh of other gears. Oil filters are pretty effective at catching any metal (including aluminum) circulating in the engine.
    -Donny
     
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  19. 52M38-73CJ5

    52M38-73CJ5 Member

  20. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    This.
    Makes sense to collect what clashing gears disperse, but in a engine pan, I'd be be very upset to find more than a trace of ferrous. But a magnet is a good tool for monitoring.

    Friend of mine stuck his finger into the drain of his Mack truck engine, came out with a 3/8" nut. But the engine seemed to run perfect. Drove him crazy wondering if it was a forgotten stray, or fell off something vital. Sometimes ignorance is bliss.