Thread: TD6 Turbo Replacement

Haven't checked that yet - still haven't got good enough access to. All hound be known soon with any luck.

Originally Posted by bacicat

It is definately rebuildable - it hasn't quite started hitting the sides of the housing yet - I looked at it because it was starting to loose power - and its not the intercooler or hoses.

A fellow Aulroian, Tony (who doesn't frequent the forum much these days) had a sudden power loss with his Td6 a couple of weeks ago.
After removing it & stripping it down, he found the variable vane mechanism had seized due to carbon build up.
The last I saw, he was leaving it to soak to remove the carbon.
Apart from the carbon, the turbo was in good shape.

Isn't that bottom hose the drain line back to sump?
Shouldn't have been any oil except bit wet!
If that's not draining back (blocked?) then you WILL use lots oil as main system supplying it under pressure at top; gotta have somewhere to go--- thru turbo into engine!
Turbo shaft oil seals pretty rudimentary and if some shaft side play, then these seals can let some oil past into inlet.

Originally Posted by donrover0

Isn't that bottom hose the drain line back to sump?
Shouldn't have been any oil except bit wet!
If that's not draining back (blocked?) then you WILL use lots oil as main system supplying it under pressure at top; gotta have somewhere to go--- thru turbo into engine!
Turbo shaft oil seals pretty rudimentary and if some shaft side play, then these seals can let some oil past into inlet.

No, the bottom intercooler hose is the one I was talking about. Oil ran out of the intercooler when I removed it. Not far off from having enough to run the engine on.

How did you go getting the injectors out?

Found an adaptor to screw onto the top of the injector - with the solenoid removed. Still took 20 minutes with a 1.5Kg slide hammer to get it out. To say it was stuck and carboned up is an understatement...

A LOT of carbon fell into the cylinder, so I wasn't risking a bent valve or bend piston skirt, so I have also now removed the head. It has to go off for some machining in the injector hole as the seat was burnt and there is no way it would seal if I put it back together like that, so it had to be done...

On the bright side, the cams, followers, cam bearings and bores are in very good condition and have many years left in them yet - still can clearly see cross hash marks in the bores and there is no lip or anything like that.

I have pretty much all the parts now including a brand new Garrett turbo which was surprisingly well priced. I took the old turbo to Roto Master in Somerton - not far from home and they checked it over and found it was stuffed. The biggest thing they say killed it was dust... Yes, dust. They also said they had seen heaps of these failures from L322's and said it was due to the **** design of how the air cleaner seals on the inlet - an issue I have always worried about. I am yet to figure out what to do about this yet, but I don't want to kill another turbo. As the turbo is a VNT design they cannot be successfully rebuilt locally - I checked 4 places and none of them would touch it, but a new turbo was.....

Go on, have a guess...

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Prices from old blighty were about £750 so I was worried what one in Aus would cost me...

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Well, a brand new one was just over $1,100 including GST from Roto Master and their service was first class - very friendly, knowledgable and helpful, so they got the gig - they had it the next day for me.

Oh, they also said that part number had been superseded 7 times since it was built and the new version has much better boost characteristics and that I should notice the power build slightly earlier than before.

So now I just have to clean everything up and stick it all back together.

I'll keep you all posted.

How did you go with the new turbo Gav?

Mine has a lot of oil around the place, and it whistling loud now - only really when cold, settles down when everything warms up but that can't be good Been thinking last couple months it seems a bit sluggish.

All good, goes great now. Bit of a ***** of a job, but all done. Turbo was cheaper than I thought. I think I posted some detail about it somewhere, but not sure.