The end of my Discovery.

I think that like the possible loose TD5 oil pump bolt where it became standard practice to replace the bolt if it wasn't known to have already been replaced, that preventative steps need to be taken. Firstly check that hot idle oil pressure is perfect when the oil hasn't just been changed to establish the condition of the bearings then remove the sump to replace all bearings if pressure wasn't perfect and retorque all bolts if not replacing the bearings. Whilst I don't know what the cost of doing this work would be, gambling that a failure doesn't occur can be very expensive and inconvenient.

Broken camshaft belt sprockets are another cause of a major failure, albeit far less frequently, but IMO the sprockets should be replaced with the current version when the belt is next changed. Even if the later sprockets aren't any stronger, they will at least be new.

10 years ago, I would have had this on a hoist, even if I had to buy one to doit and had the body off and the motor out and in bits by now, and known what the actual cause was.
However, I no longer have the physical ability or the resources to venture down that track unfortunately.
Cheers and a Merry Christmas and a Happy, Healthy and Prosperous New Year to all.
Les

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Originally Posted by Graeme

I think that like the possible loose TD5 oil pump bolt where it became standard practice to replace the bolt if it wasn't known to have already been replaced, that preventative steps need to be taken. Firstly check that hot idle oil pressure is perfect when the oil hasn't just been changed to establish the condition of the bearings then remove the sump to replace all bearings if pressure wasn't perfect and retorque all bolts if not replacing the bearings. Whilst I don't know what the cost of doing this work would be, gambling that a failure doesn't occur can be very expensive and inconvenient.

Broken camshaft belt sprockets are another cause of a major failure, albeit far less frequently, but IMO the sprockets should be replaced with the current version when the belt is next changed. Even if the later sprockets aren't any stronger, they will at least be new.

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It was around $9k which included a host of new seals around the engine (vac pump, rocker covers, rear main), new oil pump, full service (timing belts), AC regas and the likes. Body off etc. 35 hours labour.
The bearings were only about $750 of it.

This was done at around 240k km. Still going at 375k km. I do wonder every day for how much longer though. I’ve given up on the exterior. The bonnet needs a complete respray but I can’t bear to spend money on it knowing it could die at any time. And yet it probably won’t.

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Originally Posted by shack

Fwiw a number of the tunes that Craig has been running are early development tunes that worked out better than we thought they would, they are not finished, but I believe have been rock solid for possibly up to 2 years...I don't view them as finished anyway.


So that's where he's getting the sneaky "tuned 2.7 beating" performance.

That and the hardware side of his vehicles is pretty tight.

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Despite our conversation t'other day, I'm still interested. [biggrin]

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Originally Posted by DiscoJeffster

It was around $9k which included a host of new seals around the engine (vac pump, rocker covers, rear main), new oil pump, full service (timing belts), AC regas and the likes. Body off etc. 35 hours labour.

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I think that you made a good decision and cheaper and more convenient than an unexpected failure.

Note that the sump can be removed without removing the engine, as is done to replace a faulty oil sensor and the upper main slippers can be wound out with the bearing caps slightly loosened and doing 1 at a time.

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Originally Posted by DiscoJeffster

It was around $9k which included a host of new seals around the engine (vac pump, rocker covers, rear main), new oil pump, full service (timing belts), AC regas and the likes. Body off etc. 35 hours labour.
The bearings were only about $750 of it.

This was done at around 240k km. Still going at 375k km. I do wonder every day for how much longer though. I’ve given up on the exterior. The bonnet needs a complete respray but I can’t bear to spend money on it knowing it could die at any time. And yet it probably won’t.

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I can't remember whether you commented on doing this at the time, did you take pics of the bearings when they came out?

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Originally Posted by shack

I can't remember whether you commented on doing this at the time, did you take pics of the bearings when they came out?

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I didn’t do it. Indy did but they didn’t comment that they were suspect. The thrust bearings were shot though which was the reason it was done.

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Originally Posted by DiscoJeffster

I didn’t do it. Indy did but they didn’t comment that they were suspect. The thrust bearings were shot though which was the reason it was done.

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How did you discover the thrust bearings were shot? Is there a non-invasive way to measure?

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Originally Posted by veebs

How did you discover the thrust bearings were shot? Is there a non-invasive way to measure?

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When they had the body off, a quick pull and push on the crank pulley you could see. Putting a dual gauge on it showed it was over twice over the spec it should be.

Note that the thrust bearings are side faces on the rear main bearing slippers, not distinct parts.