Blown turbo...!

[ALFAitalia]

Words from a professional.
View attachment 164062

That's as maybe......but people like Garret say that it voids your warranty if you don't (as does the company that supplied my turbo).....and Id like to think they would know. The relatively thick cold engine has to get to the top of the engine.....and with the turbo idling at about 10,000 rpm I don't want it without oil for even a second!! Apparently , having looked it up, you just open the top centre bung....pour oil in whilst rotating the blades by hand to coat the bearings....that will give enough lube to protect the bearings from damage until the oil gets there. So thats what I will be doing....its certainly cant do any harm.

 

[OneForTheRoad]

That's as maybe......but people like Garret say that it voids your warranty if you don't (as does the company that supplied my turbo).....and Id like to think they would know. The relatively thick cold engine has to get to the top of the engine.....and with the turbo idling at about 10,000 rpm I don't want it without oil for even a second!! Apparently , having looked it up, you just open the top centre bung....pour oil in whilst rotating the blades by hand to coat the bearings....that will give enough lube to protect the bearings from damage until the oil gets there. So thats what I will be doing....its certainly cant do any harm.

Lash on.

 

[ALFAitalia]

??? No idea what that means!!

 

[OneForTheRoad]

That's as maybe......but people like Garret say that it voids your warranty if you don't (as does the company that supplied my turbo).....and Id like to think they would know. The relatively thick cold engine has to get to the top of the engine.....and with the turbo idling at about 10,000 rpm I don't want it without oil for even a second!! Apparently , having looked it up, you just open the top centre bung....pour oil in whilst rotating the blades by hand to coat the bearings....that will give enough lube to protect the bearings from damage until the oil gets there. So thats what I will be doing....its certainly cant do any harm.

Lash on.

??? No idea what that means!!

Get on with it

 

[ALFAitalia]

 

[Bellow]

Hot end looked OK....but had about 5mm play in and out.....



....cold end.....not so much!....damaged blades and lots of play in all directions...the blades have hit the walls.

View attachment 164090

Does 'hitting the walls' account for the damage at the impellor's hub? Broken bits re-swallowed - or has something else been through it?

 

[ALFAitalia]

No idea.....there was a small piece of the orange turbo to batwing seal missing......but I cant see a small soft piece of silicone rubber doing that.....but at 100,000 revs plus I guess anything is possible.

 

[OneForTheRoad]

The engine oil is always on top on the om642 from the first turn of the key.it doesn't pump up from the sump. Do a full oil change ,incase of debris , put new oil in , but pour the last litre into the oil filter housing.

 

[ALFAitalia]

Yep.....changing the oil is also part of the warranty requirements....not sure how they would know though.....but I was planning to change the oil soon anyway.

 

[OneForTheRoad]

No idea.....there was a small piece of the orange turbo to batwing seal missing......but I cant see a small soft piece of silicone rubber doing that.....but at 100,000 revs plus I guess anything is possible.

Ever seen a brick thrown into a spinning washing machine ??

 

[ALFAitalia]

Strangely.....no!

 

[BTB 500]

Does 'hitting the walls' account for the damage at the impellor's hub? Broken bits re-swallowed - or has something else been through it?

Although not that common the OM642 has a 'known issue' with the manifold liners delaminating, sending debris into the turbo. That's what killed the one in my Vito at 93k miles. And replacement on that is an engine out job.

Not suggesting that's what happened here ... just for info.

 

[ALFAitalia]

That the exhaust manifold though AFAIK...wrong side of the turbo for that.......only the plastic batwing and airboxes on the cold side.

 

[OneForTheRoad]

Strangely.....no!

Never one to disappoint.

To view this content we will need your consent to set third party cookies.
For more detailed information, see our cookies page.

Accept third party cookies

 

[BTB 500]

That the exhaust manifold though AFAIK...wrong side of the turbo for that.......only the plastic batwing and airboxes on the cold side.

Yes for sure, only mentioned in the context of stuff going through the turbo.

 

[W1ghty]

That the exhaust manifold though AFAIK...wrong side of the turbo for that.......only the plastic batwing and airboxes on the cold side.

Just spotted your signature ….the Alfa part , very funny buddy !

 

[ALFAitalia]

Just a thought......whilst I have my diesel cat (NOT the DPF) on my work bench, is it worth giving it a clean? There seem to be lots of ways suggested on the net. My car has "only" done about 95000 miles......but as far as I can tell the cat (or turbo) have never been of....which explains why the bolt for the clamp that held the cat on was facing the engine....thanks Mercedes. So its bound to be a bit clogged by now...and of course when the turbo went I put a bit of oil through it!! You cant see the "in" side as there's a 90degree bend....but the "out" end of the ceramic cat material is clean and still white....which is good. Worth doing since its out ...or not? What do you guys use?....I've seen anything suggested from hot soapy water to acetone, white vinegar or even full fat coke!!!

 

[ALFAitalia]

Ok....so that go lots of replies!....here another one to ignore!!

Anyone have a definitive list of torque setting for the bolts that hold the turbo in place....so the ones exhaust manifold to turbo manifold, EGR pipe bolts, turbo oil feel pedestal to turbo and pedestal to block etc.

I have found a few lists online...but I feel that they might have changed over the years as some of the later ones have different torques....and some have "plus 60 or 90 degrees" which the earlier ones don't. Any help welcomed.....otherwise I'll just do the normal....do them up until they strip...then back quarter turn!

 

[ALFAitalia]

Ok.... so the new turbo is in..... not the most fun to be honest. Very difficult to get the band on that connects the cat to the downpipe... you are trying to get the clip to sit in the right place over the joint... but its about a foot down the back of the engine in a three inch wide gap. Once I'd got the band in place, gluing the bolt to the socket was the only way to get it down there after I had cable tied the ends of the band as close together as possible.
Getting a socket on the lower bolt where the cat joins the turbo is tight too and you are doing it blind. Fitting turbo itself is pretty straight forward...just got to make sure that you don't knock the gasket off the top of the oil supply pedestal/ mount whilst you line everything up...I used a couple of drops of super glue to hold it in place. The other thing is the quoted torques ...most of the bolts were quoted as 20nm in the past... but recently that was changed to 20nm plus 90 degrees. No way those little 8mm thread bolts could have taken the extra 90 degrees....45 to 60 was my comfortable limit.
How does it drive now?.... no idea! As per usual I had others things to do that took my time so I still need to fit the batwing.. with its new seals, the heat shield and change the oil... and although I'm off tomorrow the forecast 60 mph gusts will probably put pay to that....it was cold enough today working on the shade with that minus 3 windchill!

 

[geoffus]

I had the same trouble getting the turbo exhaust band to fit properly when I replaced mine on a BMW 320. Took forever to get it right, I didn’t trouble myself with torque settings, just did everything tight, worked nicely.
Very rewarding when you start the car up for the first time, it blew loads of oily smoke for a few miles, but once settled down was perfect.
My turbo blew up around 98,000 miles which is standard for the BMW I believe, I always run it on Castrol Edge as well, for all the good that did.