Thread: Turbo-disaster

Originally Posted by johntins

I stress that I am no expert, but a turbo is a turbo. Perhaps you need to look at the input side, as in is there any way some foreign object bypassed your air filter?

Seriously though, they fail. There isn't much clearance between the blades and the housing, so a worn bearing will do it. Speeds of 100,000 rpm are common, and all it takes at that speed is a touch, and one thing leads to another.

A different topic, in a way, but I have always believed in idling down an engine, to stabilise temps ( VW horizontally opposed 1600s would crack heads ) or to allow the turbo to spin down and cool with oil pressure present. Current thinking says that is bad for the environment.

Agreed. Wind down is important. I won't turn mine off until egt's have dropped to 175C. Egt's should not rise above 703C either or damage is caused every time that the egt goes above that temperature.
My D2 turbo lasted 362,000 km by sticking to basic turbo knowledge.

Cheers,

Jason

Originally Posted by rangieman

Only stating the obvious as the op stated and hopefully not a auto or the thump could be terminal auto fail or torque and drive plate prob`s

Not to worry it's in the Defender section so it's a manual..

Originally Posted by LennyK

No oil left to speak of and definitely 2 big end knocks as I switched her off.

Sump off and caps off for a start. Measure the journals and caps.
Be aware: do not place hope in the wishful thinking others would like to offer of an easy fix.
The TD5 is not a forgiving motor with out oil and everything must be checked.

Might be easier to get onto Dazzatd5 and buy a second hand motor
No oil is usually terminal

Originally Posted by djam1

Might be easier to get onto Dazzatd5 and buy a second hand motor
No oil is usually terminal

This^

Originally Posted by whitey56

Looking at the second photo do these turbo's have oil fed ball bearings and not the precission bush type bearings[i forget their proper name], forgive my ignorance as i've only worked on truck turbo's.

Hi Whitey. Bushes are pressure fed plain type. As you can see they're a little bit worn.

Originally Posted by Graeme

The bearings are high clearance where the shaft floats on oil. The shaft can be moved with very little finger pressure to almost touch the sides giving the impression of badly worn bearings.

Hi Graeme. Plan to dial gauge the new one before I put it in so I've got a base line to work from.

Originally Posted by strangy

Not to worry it's in the Defender section so it's a manual..



Sump off and caps off for a start. Measure the journals and caps.
Be aware: do not place hope in the wishful thinking others would like to offer of an easy fix.
The TD5 is not a forgiving motor with out oil and everything must be checked.

Thanks for the heads up Strangy. If I Plastigauge them would that do or is that taboo on the TD5.

Have just been out and had a look at the dipstick again. Was only just registering on the day but after its sat for a while the oil has come up to the second or low mark on the stick. Hope thats good news