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Topic: New Turbo (Read 946 times) previous topic - next topic - Topic derived from What's the mileage on...

New Turbo

We have 111,XXX miles a just had the valves and injectors adjusted, oil and all filters changed and ready ti go some more.
Jon Ohman
2001 U320 36'
Build #5809

Re: New Turbo

Reply #1 –
Bought it August 2015 at 160k - now at 174k. Only regular maintenance other than new turbo & FOT muffler replaced with resonator.
David & DC
97 U320 40' WTBI M11 450 #5153
01 Wrangler Sport
Near Palacios, TX

Re: New Turbo

Reply #2 –
Symptoms - lack of hp. Turned out to be a by-product of the resonator install done in NAC. Turbo was not re-installed properly but no visual, audible or flatland driving indication. Got to the hills and couldn't keep up with loaded 18's. Multiple techs confirmed turbo band clamp was installed improperly (one found the missing nut still riding nearby on the frame rail). Not sure why the band was removed at all but the turbo was toast. Fortunately no collateral damage & easy repair but shop in NAC taking no responsibility.

How does your m11 do now in the hills? 
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: New Turbo

Reply #3 –
Sounds like maybe the 2 parts that the clamp holds together may have caused the turbo to bind and not spin.If this shop in NAC
actually left the nut off and caused the problem and now refuse any responsibility maybe they should be named,not flamed.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: New Turbo

Reply #4 –
Quote from: oldgrayrider –
"Tell me about the turbo replacement if you could?  Symptoms?"

Symptoms - lack of hp. Turned out to be a by-product of the resonator install done in NAC. Turbo was not re-installed properly but no visual, audible or flatland driving indication. Got to the hills and couldn't keep up with loaded 18's. Multiple techs confirmed turbo band clamp was installed improperly (one found the missing nut still riding nearby on the frame rail). Not sure why the band was removed at all but the turbo was toast. Fortunately no collateral damage & easy repair but shop in NAC taking no responsibility.
Cannot imagine scenario where turbo would have to be disconnected to replace muffler with resonator. Even if exhaust pipe coming directly from hot side of turbo was removed and piping was replaced, and band clamp from turbo to pipe was not installed correctly, the result would be a leak on the exhaust side of turbo. Maybe some extra noise, but cannot see any possibility of damage to turbo itself. Most common problem with turbo failure is leak on cold/intake side, allowing dirt, water etc to enter turbo. Hard to damage the hot side, as exhaust gas would keep anything from entering turbo. No reason to mess with anything on intake side when replacing muffler.
On my ism connected resonator to down pipe, did not get even close to turbo.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: New Turbo

Reply #5 –
If speculating, another possibility is: if the turbo compressor housing to elbow (both aluminum) lost their band clamp torque, they could chew each other up. 

On some turbos, the compressor housing can be purchased separately from the whole turbo.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: New Turbo

Reply #6 –
Quote from: wolfe10 –
If speculating, another possibility is: if the turbo compressor housing to elbow (both aluminum) lost their band clamp torque, they could chew each other up. 

On some turbos, the compressor housing can be purchased separately from the whole turbo.
Brett, why would the tech do anything to the compressor side to turbine side, band  or compressor to intake clamp when replacing a muffler?
Unless you are saying it could be material failure and not tech error.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: New Turbo

Reply #7 –
To really find out we will eventually have to get more info from the shop.The nut did not back off and land on the shelf,if by some
chance it was off when they worked on it they should have noticed the clamp without a nut.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: New Turbo

Reply #8 –
Quote from: jcus –
Brett, why would the tech do anything to the compressor side to turbine side, band  or compressor to intake clamp when replacing a muffler?
Unless you are saying it could be material failure and not tech error.
Agree, there is no reason for a tech to be anywhere near the "intake" side. 

But damage is less likely to be an issue on the "exhaust" side, as that part of the turbo is steel, so much more difficult to harm.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: New Turbo

Reply #9 –
Turbo was removed to do the muffler removal/resonator install. Don't know why or why/when the band clamp or clamp nut was removed.

To clarify - there was other work in process which may have necessitated turbo removal but end result was same.
David & DC
97 U320 40' WTBI M11 450 #5153
01 Wrangler Sport
Near Palacios, TX

Re: New Turbo

Reply #11 –
David,

Was the damage to the exhaust side or compressor/intake side of the turbo?
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020