Hi, i have 1.4 tsi CTHE 132kw, i have engine from crashed fabia 2, 2015/03, whole engine with turbo etc. Have 25 000km +- mileage, engine works normally, 0 faulty codes, no problem, turbo runs normally too, but i tryed radial clearance and i think thats little bit much. What do u think?

Turbo number: 03C 145 703 A

https://youtube.com/shorts/0lJgLK9CUgg?feature=share 

Oil (5w40 valvoline) in engine is clear like new, i changed the oil 3 times when i installed the engine in my car, i drove 5000+- km by myself with this engine and no prob. I let the turbo heat up and also cool down every time, no chip tuning etc. Thank u. 

when i moving with the turbine it does not touch the wall of the turbo and I can't hear any noises

Yes that radial play looks excessive, what is the end float like?

1 minute ago, sepulchrave said:

Yes that radial play looks excessive, what is the end float like?

Ohh 😌 how is that possible? :( 

End float? What is it? U think axial clearance? Or radial clearance of exhaust part of turbine? Sorry for my English

Oil starvation in the past may have caused the wear.

 

Yes, axial play, grip the nut and push/pull.

3 minutes ago, Vojtechovsky said:

Ohh 😌 how is that possible? :( 

End float? What is it? U think axial clearance? Or radial clearance of exhaust part of turbine? Sorry for my English

What your video shows is axial clearance between the turbine wheel and its casing. End float is how much the turbo rotor can move along the axis if you push-pull the end of it.

6 minutes ago, sepulchrave said:

Oil starvation in the past may have caused the wear.

 

Yes, axial play, grip the nut and push/pull.

Ok, now i understand, i will try it, so what should i do now?  should I drive normally with it or let repair it? 

5 minutes ago, KenONeill said:

What your video shows is axial clearance between the turbine wheel and its casing. End float is how much the turbo rotor can move along the axis if you push-pull the end of it.

Okay, thank u for explaining

If you can see and/or feel movement then the bearings are shot.

Edited 30 May, 20215 yr by J.R.

1 minute ago, J.R. said:

If you can see and/or feel movement then the bearings are shot.

Some movement can balance oil pressure i think

I wish you luck in that case.

2 minutes ago, Vojtechovsky said:

Some movement can balance oil pressure i think

My brother have Peugeot 1.6 hdi, 1 month new turbo, works good, no oil leak from turbo and it have almost same radial play

1 minute ago, J.R. said:

I wish you luck in that case.

Shoul i repair it now? But it runs normal, no oil leak from turbo, no noise, no faulty codes, no smoke from exhaust etc. 

48 minutes ago, Vojtechovsky said:

Shoul i repair it now? But it runs normal, no oil leak from turbo, no noise, no faulty codes, no smoke from exhaust etc. 

 

If you have no end float then no, there's no need to do anything.

Keep in mind that the turbo can be very hot (few hundred degrees Celsius) and you don't want ik to get stuck, when it is hot. So some clearance is necessary, to keep the turbo running.

18 minutes ago, sepulchrave said:

 

If you have no end float then no, there's no need to do anything.

Well, thank u, I will check it, so when i will have no end float, should it be ok with this radial clearance? You said that radial play looks excessive

Just now, Vojtechovsky said:

Well, thank u, I will check it, so when i will have no end float, should it be ok with this radial clearance? You said that radial play looks excessive

 

It does, but once there's oil pressure the play goes away.

 

However end float is not affected by oil pressure and is much more critical.

13 minutes ago, Fabia-format said:

Keep in mind that the turbo can be very hot (few hundred degrees Celsius) and you don't want ik to get stuck, when it is hot. So some clearance is necessary, to keep the turbo running.

Well, i know that some clearance can balance oil preasure but someone said that radial play looks excessive

I am retracting those comments in the light of what more experienced people, yourself included have said.

 

It would be true for any other bearings but given the rotational speed and operating temperature I can see that some play when cold would be needed, I'm just suprised that on such a small diameter shaft you could see it on a video.

 

Every day is a learning day!

 

Have you ever looked at & listened to the rattling of a shut down but slowly rotating aircraft turbine engine with the wind blowing through it? Talk about a bucket of bolts, it doesn't inspire much confidence but that clearance is needed for the same reason.

58 minutes ago, sepulchrave said:

 

It does, but once there's oil pressure the play goes away.

 

However end float is not affected by oil pressure and is much more critical.

 

Why is that?

 

Is it oil leakage related?

8 hours ago, J.R. said:

 

Why is that?

 

Is it oil leakage related?

If I'm understanding correctly, hydrodynamic pressure, which can be several hundred atmospheres, will centralise the shaft radially. The same does not apply axially, not least because you don't get thin film hydrodynamic effects on bearing ends.

 

Disclaimer - Not an expert on turbos, but putting several different bits of stuff from different sources together.

so what i read, is my turbo good yet? Or i should start looking for new one? Axial clearance is good, i have just radial what u can see in my video. I know that oil pressure balance that clearance, but my question is, is it too much? Or still good?

I think it's the other way around: I see axial clearance in your video, not radial.

 

Axial - in the direction of the length of the axe

Radial - in the direction of the diameter of the axe

9 minutes ago, Fabia-format said:

I think it's the other way around: I see axial clearance in your video, not radial.

 

Axial - in the direction of the length of the axe

Radial - in the direction of the diameter of the axe

Where u see axial? It's moving side to side so its radial clearance

Axial is side to side!!

 

That video shows its worn, thats all. You haven't shown its axial, radial, end float or anything else. Just that its wobbly.

Edited 7 June, 20214 yr by xman

https://www.kaydonbearings.com/typesACX.htm#:~:text=Radial and axial (thrust) loads,to the axis of rotation.

 

The world's gone mad!