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Aluminum swarf in oil
https://www.ausmini.com/forums/viewtopic.php?f=2&t=61944		 Page 1 of 2
Author:  phillb [ Mon Mar 22, 2010 6:41 pm ]
Post subject:  Aluminum swarf in oil
Ok, I'm almost afraid to ask about this but...

...when I changed the oil on the weekend there was some non magnetic swarf (aluminium??) that came out with the old oil.

Theres no other symptoms except it had been a little difficult to engage 1st and reverse when hot just before the oil change, but it seems OK now.

What's the possible cause and what would normally be the symptoms.

Cheers
Author:  GT mowog [ Mon Mar 22, 2010 7:14 pm ]
Post subject: 
I doubt that it would be engine bearing material, so relax on that (unless you notice a drop in oil presure).

Some of the non-standard baulk rings were non-ferrous and it is likely to be this. Quite normal.
Author:  TheMiniMan [ Mon Mar 22, 2010 7:24 pm ]
Post subject: 
unless you have an alloy rocker cover & the rockers have been playing "Touchy-feely" with it :-)

or maybe you have a central oil pick-up that hasn`t been fitted well & has been scraping the bottom of the gearbox for ages

or maybe you have a 1275cc engine fitted onto a non-1275 type gearbox & the big ends have been scraping the sides of the box

or maybe it`s actually brass particles from the gearshift forks

or maybe your idler gear bearing was sooo worn out that the shaft has now worn into your cases

or maybe

oh i could go on & on, but i`m sure all this will just frighten you :-)

Hope it`s just a simple one & not something horrible
Author:  phillb [ Mon Mar 22, 2010 7:40 pm ]
Post subject: 
TheMiniMan wrote:

or maybe your idler gear bearing was sooo worn out that the shaft has now worn into your cases


Thats the one I had wondered about after searching old posts, what would be the symptom of that?
Author:  drmini in aust [ Mon Mar 22, 2010 7:41 pm ]
Post subject: 
A lot of backlash in the drive when you back off, also excess and strange drop gear noises...
Author:  TheMiniMan [ Mon Mar 22, 2010 7:43 pm ]
Post subject: 
oh yes ,,,the Doc is dead right (as usual) :-) if it were the idler brgs "That" bad then it would (usually) sound like you have worse than a Straight cut race gearbox.
Author:  blue_deluxe [ Mon Mar 22, 2010 7:46 pm ]
Post subject: 
phillb wrote:
TheMiniMan wrote:

or maybe your idler gear bearing was sooo worn out that the shaft has now worn into your cases


Thats the one I had wondered about after searching old posts, what would be the symptom of that?


I did that,
Sounds like a dying cat. Or an electric car.
Really high pitched whining on mine on acceleration.
Didnt really effect engine performance but took the gearbox and everything out with it with filings being pumped around.
Author:  Morris 1100 [ Mon Mar 22, 2010 7:46 pm ]
Post subject: 
phillb wrote:
TheMiniMan wrote:

or maybe your idler gear bearing was sooo worn out that the shaft has now worn into your cases
... what would be the symptom of that?
Aluminium in the sump oil. :mrgreen:
Author:  TheMiniMan [ Mon Mar 22, 2010 7:48 pm ]
Post subject: 
hee hee

Love you Morry :-)
Author:  Morris 1100 [ Mon Mar 22, 2010 8:01 pm ]
Post subject: 
TheMiniMan wrote:
hee hee

Love you Morry :-)

Love you too. :mrgreen:
Author:  NAV [ Mon Mar 22, 2010 8:06 pm ]
Post subject: 
Does it look like this?
Image

Because this is what I found
Image

blue_deluxe wrote:
I did that,
Sounds like a dying cat. Or an electric car.
Really high pitched whining on mine on acceleration.
Didnt really effect engine performance but took the gearbox and everything out with it with filings being pumped around.


Nasty, I only drove a few hundre meters fromthe first sign of anything wrong
Author:  blue_deluxe [ Mon Mar 22, 2010 8:08 pm ]
Post subject: 
I win, about 20 ks home.

When i was young and dumb.
Now im a bit older and probably as dumb.
Author:  MG Rocket [ Mon Mar 22, 2010 8:45 pm ]
Post subject: 
NAV wrote:
Does it look like this?
Image

Looks like diamonds..yer rich!
Author:  phillb [ Mon Mar 22, 2010 9:05 pm ]
Post subject: 
Looks like this, and this is pretty much all of it.

Theres no excessive noise, 1st gear theres just that typical whine any mini has, once into 2nd and beyond I wouldn't say theres any excess noise, can't really hear much gear noise in 3rd or top even if you accelerate.

Doesn't seem to be that much slack in the drive, again same as always. Theres always been a slight knock sound if you power on or off suddenly, but only if your real rough with it.

Image
Author:  IndigoBlueCooperS [ Mon Mar 22, 2010 9:13 pm ]
Post subject: 
Idler gear bearings?
From memory (long time ago) at idle in neutral you hear a whine.
Push the clutch in and the whine stops because the gears stop going around.
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