32 replies to this topic

[gazza82]

Is the tube made of bronze like metal ?

No .. tinny stuff or plastic later

[Lplus]

there were flakes of bronze as well..caught amongst shavings of steel attached to sump plug magnet.

Is the tube made of bronze like metal ?

Or could it be from a washer or something in gear box

Seems more likely to be from the gearbox - my initial thought was a shaving from a worn selector fork. How big were the shavings of steel? 

[mrmeds]

 

there were flakes of bronze as well..caught amongst shavings of steel attached to sump plug magnet.

Is the tube made of bronze like metal ?

Or could it be from a washer or something in gear box

Seems more likely to be from the gearbox - my initial thought was a shaving from a worn selector fork. How big were the shavings of steel? 

 

well the pic is the palm of my hand - so the big bit is probably 3-4 mm wide and about  15-20 mm long

[Spider]

It's possibly a remnant from the last time it was apart. I'd guess one of the the brass plugs that were drilled out of the Oil By-pass, pulled for cleaning.

[mrmeds]

oil has been changed 5 times since rebuild - has around 4500 miles under its bonnet since

first 3 oil changes at  300,  660  and 1000 miles, then at around 4000 in april.

In fact may have been changed a 6 th time as have memories sourcing 20w/50 from local car factors.

Last oil change was last week a si could smell a slight whiff of petrol in it

Edited by mrmeds, 08 September 2024 - 10:34 AM.

[mrmeds]

mini is nnow headed north to be looked at. The guy who picked it up said the bits looked like primary gear/ thrust washer .....

[mrmeds]

its buggered ... main bearings , crank , just for starters

[mrmeds]

well that was expensive......

 

new crank

 carbs overhualsed

 new block new - origankl beyond salvation

 

refurbed block

basically you name it , it was replaced ..... including alternator for some reason

[GraemeC]

At whose cost?

[mrmeds]

At whose cost?

mine

[Cooperman]

What was wrong with the block that made it scrap?

It's rare for a block to be unable to be re-bored or linered (if at 60 thou or over already) and the main bearing caps skimmed and realigned/bored. I know that there can be issues when a 1380 needs a re-bore, but below that it's unusual.

As for the crank, it must have been in really bad shape if a further 20 thou smaller regrind would not sort it out.

Edited by Cooperman, 06 March 2025 - 03:28 PM.

[imack]

Do you know what caused the failure and what the brass material was from?

[imack]

What was wrong with the block that made it scrap?
It's rare for a block to be unable to be re-bored or linered (if at 60 thou or over already) and the main bearing caps skimmed and realigned/bored. I know that there can be issues when a 1280 needs a re-bore, but below that it's unusual.
As for the crank, it must have been in really bad shape if a further 20 thou smaller regrind would not sort it out.

I agree, installing liners and line boring is an option, but it's very expensive. In most cases it'll be cheaper to just start with another block.

[mrmeds]

Do you know what caused the failure and what the brass material was from?

petrol in oil ..... guess getting 20-24 mpg was a clue

 guess the brass was the main bearings

Edited by mrmeds, 25 March 2025 - 07:43 PM.

[mrmeds]

 IMG_7100.jpeg   68.21K   1 downloadsdid first oil change ...... wiped the filings off the dump plug and this happened !

 lucky escape