51 replies to this topic

[neal]

I've been looking at those small neodymium magnets on eBay and just wondered as above really??

 

Is anyone using them?

 

Views and thoughts welcome :)

[mini-geek]

You'd be far better with the one in the pickup at the back of the gearbox..

MiniSport do them... They are a paint but it's before the oil pump..

[sledgehammer]

away's have done - don't know if they do anything

 

should hold the fine metal bits

 

on a steel sump , I put  one next to  the drain & remove at oil change - so it washes any particles out the sump

[nicklouse]

Just change filter and oil regularly.

Magnets around flowing oil is not good.

[mini-geek]

Why are magnets around flowing oil not good?

[nicklouse]

They can only hold so much crap against a certain flow. The more they hold the less area there is for the oil to flow which in return recuces the amount the magnets can hold.



And in this case any metal that they do collect has already done the damage.

[neal]

They can only hold so much crap against a certain flow. The more they hold the less area there is for the oil to flow which in return recuces the amount the magnets can hold.



And in this case any metal that they do collect has already done the damage.

My thought was to use these with regular oil and filter changes.

[mini-geek]

They can only hold so much crap against a certain flow. The more they hold the less area there is for the oil to flow which in return recuces the amount the magnets can hold.



And in this case any metal that they do collect has already done the damage.

I'm sorry but a magnet in the oil flow before the pump will prevent (or sinificantly reduce) the metal getting anywhere..

With regular maintenance the points about filling up won't be an issue..

I will continue using mine

[sledgehammer]

quote mini-geek

 

I will continue using mine

 

 

 

 

same here

Edited by sledgehammer, 30 October 2016 - 09:09 PM.

[59 Speed]

I have a long pick up - had fine metal particles on it on the last oil change after I completed the engine run in (but not excessive particles).

I use a Mini Sport pick up on the back of the gearbox - removed this and cleaned it also, it only had a small amount of metal particles on it. It is a pain to get to, but you can (with an LCB) get your arm round the back of the engine to undo. If you are fitting one of these I think you'll struggle without the inner CV removed, also if you undo the bolts holding the plate on the back of the gearbox, the pipe on the other side might move meaning that possibly you won't be able to get the new pick up on. Some also say that if a large enough collection of particles get attached to the magnet that if they come away they will enter the pump in a large clump at once, which is probably far worse than gradually, so regular oil changes and cleaning of the magnets are a must.

I also have a neodymium magnet placed on the side of my filter just below the pick up pipe, I understand that the particles have gone through the pump by that stage, but hopefully it should stop them reaching the big ends, mains, cam bearings etc...

Edited by Smackfiend, 30 October 2016 - 09:17 PM.

[wile e coyote]

I've always used a strip of magnets around the filter, have the long reach sump plug and the gearbox mag trap - take the point as regards releasing a clump but my opinion is that better to have them as is - as ok particles may have gone through the pump before getting caught - but wont repeatedly go through - which certainly would cause damage.....

 

As said regular oil changes and swarf removal vital....

[neal]

All good points made there guys, I think I'm going to probably buy the band that fits and clamps around the oil filter, the thought of several loose magnets being jarred may release a clump of filings and defeating the object, I think I'll go with regular oil changes as well.

 

Just as a matter of interest, what mileage do you change your oil and filters?

 

Many thanks

Neal

 

Oh, forgot to mention that my oil filter housing does not have a bypass valve fitted.

Edited by neal, 30 October 2016 - 09:47 PM.

[nicklouse]

I've always used a strip of magnets around the filter, have the long reach sump plug and the gearbox mag trap - take the point as regards releasing a clump but my opinion is that better to have them as is - as ok particles may have gone through the pump before getting caught - but wont repeatedly go through - which certainly would cause damage.....
 
As said regular oil changes and swarf removal vital....

Why would they go through repeatedly? The filter will stop them.

Most mini engine bearing failure is through lack of lubrication not crud in the bearings.

The issue is no filter before the pump anything after the pump is not actually going to change improve anything.

[Orange-Phantom]

I wouldn't go any further than 3000 miles before changing the oil and filter.

Also...

http://www.machinery...etic-filtration

[neal]

I wouldn't go any further than 3000 miles before changing the oil and filter.

Also...

http://www.machinery...etic-filtration

Cracking link!

 

I think the sump magnet, the oil pick up magnet in the rear of the gearbox and an oil filter magnet strap and 3000 mile oil and filter changes and magnet cleaning for me is the way to go.

 

Now, has anyone got any inside info to the best oil filters with regard to filtration and flow capabilities??

 

I was told years ago that BMW used to use re-labelled COOPERS oil filters, I don't if there is any truth in this?

 

Anyone care to comment?