Failed ATP/Garrett Turbo Thread
 

So there seems to be a recent rash of failed GT and or ATP/GT BB turbos, so I thought it might be a good idea to have a database of which turbos failed, failure mode, and outcome.

I think the following criteria should be included;

Turbo type: [GT30xx or ATP GT30xx, GTX30xx, etc]
Restrictor used: [no restrictor, .035, .040 etc]
Failure Mode: [CHRA bearing falure, hotside cracking, etc.]
Oil feed line used: [OE, ATP, other]
Oil return line used and if modified for length.
Vendor Purchased from:
Answer/resolution from vendor or manufacturer:
Symptoms: [cloud of smoke out of the back + no boost, etc.]
Turbo mileage:
Turbo failure after blown motor: [yes/no]

I think that's about it unless anyone has other ideas of what would be useful.


@chimmike
@BlueStreak
@crazyp

and any others

Here is my wall of frustration...

Turbo type: GTX3076
Restrictor used: Told by ATP that no restrictor was needed on new GTX series.
Failure Mode: Two time Seal failure. First time had metal bur left inside CHRA housing that caused rubbing and excessive heat. Defective Oil Return line sent from ATP.
Oil feed line used: OE Feed line.
Oil return line used and if modified for length. Original install had Oil Feed line used supplied by ATP. Now running custom line supplied by ATP that is 1in shorter in length.
Vendor Purchased from: Edge AutoSports
Answer/resolution from vendor or manufacturer: First time ATP rebuilt entire CHRA housing. Still waiting on resolution for second issue.
Symptoms: Oil blow back through Compressor housing. Oil in Intercooler, Intake and Throttle Body. Massive "Spy Hunter" smokescreen from tail pipe.
Turbo mileage: About 5k on original install, 1.5k on second failure.
Turbo failure after blown motor: No Blown Motor


Here are some pics of the bur in the CHRA housing and of the defective Oil Return line sent to me by ATP.

Turbo type: T3 GT3071
Restrictor used: .035
Failure Mode: CHRA bearing failure
Oil feed line used: custom ATP steel braided line
Oil return line used : Custom ATP steel Braided line
Vendor Purchased from: bought used forum user
Answer/resolution from vendor or manufacturer:
Symptoms: no boost , mileage unknown and boosted up to 24 psi

Turbo type: T3 GTX3076
Restrictor used: .035,
Failure Mode: no failure as of yet
Oil feed line used: custom ATP steel braided line
Oil return line used : Custom ATP steel Braided line.
Vendor Purchased from: Edgeautosport
Answer/resolution from vendor or manufacturer:
Symptoms:working fine so far, bought november 2011 boosted up to 27 psi

Turbo type: GT3071R /w ATP IWG
Mileage: 30K KMs
Restrictor used: None
Failure Mode: Bearing failure. Shaft play in all directions. Damaged compressor wheel.
Oil feed line used: OEM
Oil return line used and if modified for length: ATP oil return line. Not modified.
Vendor Purchased from: StreetUnit
Answer/resolution from vendor or manufacturer: Haven't sent it out yet.
Symptoms: Zero positive manifold pressure. Smokescreen out the exhaust.

I added mileage in there. Figured it would be a good parameter to list.

did your turbos blow after a blown motor, or just all by themselves?

From rayray pending more details



Tappin

Updated my post with all important details!!

Turbo type: GTX3076R
Restrictor used: No, stock oil line via ATP fittings
Failure Mode: 'clog' in oil feed inside turbo, bearings failed.
Oil feed line used: OE via ATP fittings
Oil return line used and if modified for length: ATP, not modified
Vendor Purchased from: StreetUnit
Answer/resolution from vendor or manufacturer: "user-induced error"
Symptoms: No boost, metallic whirring
Turbo mileage: 15k
Turbo failure after blown motor: NO

@SPEED6 KILLAH.. You made mention of seeing this more than once. Could you tag the owners of the turbos in this thread when you have a chance?

Pablo's precision turbo blew due to a bottom end assembly failure.

Ms3ko he owned an t3 gt3071 turbo blew post zzb

Twoptslow atp gt 3076 turbo blew post zzb

If you blow you're motor there is a big change for the contaminated oil to take out your turbo, this is why he recommended the oil feed filter.

now we're startin to get somewhere.

Ziggo made an interesting observation in chimmike's thread about the in-line filter, in that it can be a blessing or a curse. if you don't monitor it and keep it clean of debris it will be the cause of your failure. It will likely never get anything in there unless you do lose a motor but as Pablo said you have to check it religiously.

From your data it would seem that if you do blow the motor you WILL blow the turbo as well..

That's exactly what we are seeing, we can't stress enough how important it is to continuously check your filter. I would run a oil feed filter only if I was breaking in a new motor, but not after that.

Yeah, definitely did NOT pop the motor on this end, lol. OEM pistons/rods completely intact, hg intact, etc.

My immediate plan is to not change my setup. Namely no restrictor or filter until some data can be gathered.

IMO a guy should install a pressure gauge in the feed line and measure actual pressure at higher RPMs then compare to Garrett's recommended pressure and install the correct size restrictor if needed.

It could very well be that we are over oiling the GTs but really have no idea by how much. So ATP is erring on the side of caution and so will I.

Maybe when I install my GTX I'll throw a gauge on there and see what's what.


Tappin

pertinent info from the other thread

ATP told me specific to the MZR disi a restrictor is not needed. This is why they use the OEM feed without a restrictor. ATP also tells me you cannot "over oil" a turbo, but oil can leak by the seals, at which point a properly sized restrictor will stop the leaking. They say the seals are not rubber and do not "go out", that it's usually another problem.

Just repeating what I'm told, that's all.
I would be willing to believe we're not over-oiling them if we're not getting smoke/oil leak past the seals, though.

I understand completely and am in the "no restrictor" camp. I was putting that information up for the restrictor guys.

a blanket statement like "all BB turbos on all platforms need a restrictor" is BS until proven otherwise IMO. not hating on the guys that are running them but perhaps ATP knows something we don't in that our motor runs 45PSI in the feed line..enough to feed the bearings.

it sounds like Garrett only wants a restrictor to get you to the 40-45PSI oil pressure in the CHRA...but I can't say that for sure...just going off the statement on their site.

so if pressure is higher a smaller orifice will only make it more right?

so perhaps they are indicating they want a restrictor in there to INCREASE pressure if you don't have enough.

from what ATP told me, the only reason for a restrictor would be if you're getting leaking past the seals.

They apparently tested the oil pressure in the feed line to determine this data.

Doesn't change the fact that these failures are "mysterious" at best, and I'm not sure exactly who is at fault the most; ATP or Garrett or both

right.

we are covering two different topics here...lol

I don't think your failure mode has anything to do with running or not running a restrictor.

the other thing I am trying to put to rest is do we need one or not? lol it may always be a matter of opinion.

If I put a gauge on mine and wide open it reads 40-45PSE I will feel confident no restrictor is needed.

but if you are flowing too much oil IDK how to solve that...if you put in a restrictor you up the pressure correct? Then you are beyond spec for pressure but running correct volume.

catch 22 and prob why ATP says leave it alone unless you blow out smoke/seals.

edit: I am wrong according to @Lex so there you have it.

restrictor apparently does not increase pressure...I was thinking of the gargen hose analogy...put finger over part of it and the pressrue goes up and volume decreases...still don't understand why that is not the case but it doesn't matter...lol

Your question was answered in my other thread as you know.

restrictor reduces pressure/flow.

haha

I love being wrong...I am getting dizzy and must take a break from MSF for awhile....

Ahhh. It was a good theory, and useful for the topic.

:spankme:

sub'd for future reference

Subbed, I'll probably join the list eventually

@bwallace04

Discuss Here: http://www.mazdaspeedforum.org/forum/foru...thread-123898/