Author Topic: Motion Pro Oil Filter Magnet vs. Hard Drive Magnet (Read 2774 times)

Chachi · « **on:** February 09, 2015, 02:21:17 PM »

Anyone used one of these? Curious how it would fit a K&N cartridge filter.

http://www.motionpro.com/motorcycle/tools/category/oil_filter_magnets/

I have an old hard drive, but I need to find a small enough torx bit to get it open. Regardless of which magnet... does it go on the filter side facing out toward the housing? Toward the pipes/front of bike?

City Boy · « **Reply #1 on:** February 09, 2015, 02:51:47 PM »

Hi.You would want to place the magnet on the outboard end of filter by the spring. Cheers.

flybox1 · « **Reply #2 on:** February 09, 2015, 02:55:03 PM »

magnets between the filter and engine case
....oil flows out that hole in the case, around and thru the filter element, then into the bolt holes and back into the case.
just verify by looking at an oil flow diagram.

I used rare earth magnets from work. hardware store has them, too. just a few bucks.

Whaleman · « **Reply #3 on:** February 09, 2015, 03:08:53 PM »

Just bust the heck out of the hard drive. The magnets are rare earth so they will break. I use 4 hard drive magnets on the spring side. Dan

Bodi · « **Reply #4 on:** February 09, 2015, 03:51:53 PM »

Anywhere a magnet is in the oil it will pick up any ferrous metal particles that come close enough. The outside of the paper filter is the "dirty" side but you can't really get a magnet inside the filter so that doesn't much matter.
The linked motionpro magnet is a convenient washer shape, but I don't know which size would fit on the filter bolt - it could go between the spring and case end or between spring and filter. Where do you attach a disk drive servo magnet?
I use a drain plug with magnet tip. Haven't picked up more than a hint of metal on it so far.

BobbyR · « **Reply #5 on:** February 09, 2015, 05:03:22 PM »

I think I would place the magnets on the oil tank where you have the largest volume of oil.

Don R · « **Reply #6 on:** February 09, 2015, 07:13:22 PM »

If one is good, more are better, and too many are just right.

Whaleman · « **Reply #7 on:** February 10, 2015, 04:19:07 AM »

Whats nice about the hard drive magnets is that they are free and fit so nice, Dan

chewbacca5000 · « **Reply #8 on:** February 10, 2015, 04:28:52 AM »

Quote from: Whaleman on February 10, 2015, 04:19:07 AM

Whats nice about the hard drive magnets is that they are free and fit so nice, Dan

I am surprises K&N does not offer these for sale?

BobbyR · « **Reply #9 on:** February 10, 2015, 06:08:20 AM »

The question is how much metal will it pick up and is it necessary? Magnetic dipsticks have been around forever. We use them on Trains as a diagnostic. If you see a metal build up you know you have excessive gearbox wear.

You can put magnets on the gas tank it aligns the molecules and gives you more power and milage,
they have been selling that bull#$%* for years too.

Whaleman · « **Reply #10 on:** February 10, 2015, 06:35:38 AM »

I have never found a "piece" of steel on the magnets. What I do find is a thin black sluge type coating that just wipes off. Dan

flybox1 · « **Reply #11 on:** February 10, 2015, 06:53:54 AM »

On a fresh rebuild (hone and re-ring) Yes, i know there is no o-ring on this side of the filter.
This pic was after 50mi ring break-in ride.
Magnets looked the same at the 250mi oil change.

strynboen · « **Reply #12 on:** February 10, 2015, 10:43:13 AM »

mine magenets take some metal dust...have 2 harddisc magenets on...they vork fine and are easy to mount.
.but dont the filter take it anyvay..if no magenets are mounted..

have some of you...thinked of to glue the rubber sealing on to the filters.

..so they not falls of.
.i oiles mine..and are carefull at mounting them..but they are loose..and can be vrinkled off if mounted dry..

is honda brandet filters better in the sealing

Trad · « **Reply #13 on:** February 10, 2015, 10:48:23 AM »

Quote from: flybox1 on February 10, 2015, 06:53:54 AM

On a fresh rebuild (hone and re-ring) Yes, i know there is no o-ring on this side of the filter.
This pic was after 50mi ring break-in ride.
Magnets looked the same at the 250mi oil change.

Looks lovely. haha.

Did you drop and clean your pan after the break in was done complete? I'd like to see what was at the bottom.

flybox1 · « **Reply #14 on:** February 10, 2015, 11:25:09 AM »

@Trad
Removed the pan at the 250 mi change, had a same sediment, but much less.
Removed pan once more when i pulled the engine for a trans issue.
Little to no sediment.

Whaleman · « **Reply #15 on:** February 10, 2015, 01:28:26 PM »

Mine have never had that much sludge. To answer someones question: I do really believe they get very very small pieces of steel that will go through the filter. I don't have the data to prove this such as what size can go through the filter and what size is on the thin black film/sludge on the magnet. I really believe this belongs in the category of: 1. It is free. 2. It could help. 3. It can't hurt. 4. You have nothing to lose by doing it. Dan

Chachi · « **Reply #16 on:** February 11, 2015, 07:31:19 AM »

I'm with Whaleman. Easy enough and can't hurt. It's not really the same as a fuel filter debate I don't think. To be clear... see my attachment... magnets to area 1 or 2? I'm not sure what the diameter of the Motion Pro washer style magnet is. I guess if it was large enough it could be more convenient than hard drive magnets.

Whaleman · « **Reply #17 on:** February 11, 2015, 08:25:08 AM »

Since the magnets are on the outside of the filter they can get steel that would have been caught by the filter. I do the spring end. Dan

Don R · « **Reply #18 on:** February 11, 2015, 08:23:27 PM »

Makes sense to me. not a sohc but I had a few rocker arm needle bearings find their way into a new billet moroso big block pump. It pumped them and still made pressure. most ended up in the filter. Some grit made it to a couple bearings. A few thousand $ later it was good as before. Moral of the story, a few well placed magnets might have saved the carnage.

BobbyR · « **Reply #19 on:** February 12, 2015, 08:01:03 AM »

I would put forward a very powerful magnet placed on the oil tank. The reason of this is this is where you have the largest amount of oil for the longest period of time. The reason I would remove the magnet is to release whatever is trapped when you change the oil.

Whaleman · « **Reply #20 on:** February 12, 2015, 01:19:11 PM »

BobbyR, I agree. I looked into getting a 2" long X 1/2" x 1/4" to mount to the dipstick. That way easy to wipe when checking the oil. Just never got around to doing it. Dan

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Author Topic: Motion Pro Oil Filter Magnet vs. Hard Drive Magnet (Read 2774 times)