22 replies to this topic

[mrmeds]

see my other recebt threads. re oil presuure ..

Well , looks like the chunk of metal that came out of my sump is most likely a bit of primary gear thrust washer, according to the chap from company that rebuilt engine 21/2 years ago, as he carted it off in a trailer to head northwards for a strip down.

So, what are peoples thought of possible causes? It has done 4500k miles- mainly around town and minor A roads.. Oil has been changed at 300, 660 , 1000 and 4000 miles.

Is it likely to be due to poor float end set up ? Misaligned crank ?

Slightly thinner oil due to slight ingress of petrol ?

[whistler]

Don't be surprised if he says that the crank is scrap. I had similar a couple of years ago on a friend's engine. The should where the thrust washer fits to the crank was rounded off.

had to fit a new crank. I did take the knackered crank to AC Dodd who said he could sort it but the cost was high. Hope yours isn't as seriously damaged.

[Spider]

Sorry, but I just can't see that happening, unless it was assembled by an ape with a lump hammer and if it was that, I'm sure you would have had clutch issues before you noticed an changes in the Oil Pressure Gauge. Also, if it was, it would have a 1 in a million chance of working it's way from where it dropped out to the sump plug, possible but highly unlikely.

As I suggested in your other thread, it's most likely left over swarf that wasn't cleaned out.

[mrmeds]

well after 8 weeks up north - the engine is being taken out today !

[Cooperman]

I have never ever seen a primary gear thrust bearing break up. They have a good bearing area and are very well lubricated.

In addition, any broken parts of one would not be trapped by the sump plug since they would not be magnetic.

[mrmeds]

the big bit wasn't trapped by the sump plug, it got washed out by the flow of sump oil , and I found it in the catch  pan when I poured the oil into a waste container, like panning for gold .

[mrmeds]

See post no 12 in this thread for pic of metal involved

 

https://www.theminif...e/#entry3771577

Edited by mrmeds, 08 November 2024 - 03:36 PM.

[Midas Mk1]

If it’s taken two months to get to the point of removing the engine, i’d be getting the car out and back!

[Icey]

See post no 12 in this thread for pic of metal involved

https://www.theminif...e/#entry3771577

Not convinced that’s got anything to do with the primary gear, but we live to be surprised.

[mrmeds]

 

See post no 12 in this thread for pic of metal involved

https://www.theminif...e/#entry3771577

Not convinced that’s got anything to do with the primary gear, but we live to be surprised.

 

part of main bearings then ?

It definitely looks brassy rather than steel. There were flakes of the same colur metal amongts  magnetic debtris attached to sump plug.

[mrmeds]

If it’s taken two months to get to the point of removing the engine, i’d be getting the car out and back!

theres a dearth of mini speciliasts close to me - the two I did email for quotes to look at engine didn't reply- company up North offered to pick it up for free, and has they rebuilt the engine 2/12 years ago it seemed like a good idea

[Spider]

theres a dearth of mini speciliasts close to me - the two I did email for quotes to look at engine didn't reply

 

They likely get 5 - 10 similar emails a day from tyre kickers. You'd do better to see them or at least ring them.
 

[Icey]

See post no 12 in this thread for pic of metal involved

https://www.theminif...e/#entry3771577

Not convinced that’s got anything to do with the primary gear, but we live to be surprised.

part of main bearings then ?
It definitely looks brassy rather than steel. There were flakes of the same colur metal amongts magnetic debtris attached to sump plug.

At a complete guess I’d say it’s more likely to be something like the reverse gear bushing or a long forgotten dipstick tube. But how those would be in the sump without obvious other issues (including some horrendous noises) is beyond me.

[mrmeds]

 

 

 

See post no 12 in this thread for pic of metal involved

https://www.theminif...e/#entry3771577

Not convinced that’s got anything to do with the primary gear, but we live to be surprised.

part of main bearings then ?
It definitely looks brassy rather than steel. There were flakes of the same colur metal amongts magnetic debtris attached to sump plug.

At a complete guess I’d say it’s more likely to be something like the reverse gear bushing or a long forgotten dipstick tube. But how those would be in the sump without obvious other issues (including some horrendous noises) is beyond me.

 

as engine was rebuilt, and an A= - would the dipstick tube not me more likley nylon ?

 

And no horrendous sounds from gear box  or difficuty engaging reverse.

 

 

Guess , I'll find out within the next week !

[mrmeds]

ok - apparently the whole crank is knackered beyond saving and the maining bearings are confetti