Amazing Breakthrough following DIY Build
12-19-2007, 01:52 PM
#102
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Originally Posted by rrmedicx
I appreciate your input. Definitely something to think about. But as you said, you and I are both just speculating (internet diagnosing). Once I get the engine back to Texas, I will get some more definitive answers from Kyle and I can move forward from there.
12-19-2007, 09:13 PM
#103
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C U N JUNE 4 my tune
Originally Posted by MRC Motorsports
Yes, but from my personal experience,Im almost willing to bet my diagnosis is dead on spot..Also, was the lower compression side of the motor, the side with the BAD TURBO? You failed to clarify this for us all on this break through..
Originally Posted by JuniorTT
The car had the DEATH WHINE... Its a notorious and unmistakable sound. Whine, and then smoke... All from the driver side. Not to mention oil in the inlet of the turbo..
12-20-2007, 04:10 AM
#104
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Originally Posted by JuniorTT
The car had the DEATH WHINE... Its a notorious and unmistakable sound. Whine, and then smoke... All from the driver side. Not to mention oil in the inlet of the turbo..
The car had the DEATH WHINE... Its a notorious and unmistakable sound. Whine, and then smoke... All from the driver side. Not to mention oil in the inlet of the turbo..
Diagnosis: Pices of ringlands and pistons came off and went in to the turbine following a major detonation event.
I am alomost 100% certain this is what happened.I would bet money on it.
12-20-2007, 04:23 AM
#105
Like I said, it sounds very plausible, but I still can't say anything until my motor gets to Texas for Kyle to explore. It was picked up yesterday (Wednesday 12/19) and I hope that it won't be too long before I get some answers. (Although...It is the holiday season)
Meanwhile I looked at the turbo's yesterday for the first time and they didn't seem too bad to be honest. But of course that is without opening them up. I can't do that until Greddy decides what they want to do with them.
Here are a couple of pics.
Turbo #1
Turbo #2
The blades seem OK (I'm no expert), and they both spin seemingly without resistance, but that is not to say that there couldn't be any metal on the inside, in between the 2 blades/on the axle...But hopefully when the motor comes back, I will have my answers on the turbo.
Meanwhile, in case my deal with Greddy goes sour, does any one know where to get a turbo rebuilt? or at least thoroughly inspected?
I am not anticipating the worst from Greddy, as the turbo's are still under warranty, but Just in case...I'd rather send them out sooner than later, so when the motor comes back, I'm not stuck waiting for the turbos to re-assemble the car.
Meanwhile I looked at the turbo's yesterday for the first time and they didn't seem too bad to be honest. But of course that is without opening them up. I can't do that until Greddy decides what they want to do with them.
Here are a couple of pics.
Turbo #1
Turbo #2
The blades seem OK (I'm no expert), and they both spin seemingly without resistance, but that is not to say that there couldn't be any metal on the inside, in between the 2 blades/on the axle...But hopefully when the motor comes back, I will have my answers on the turbo.
Meanwhile, in case my deal with Greddy goes sour, does any one know where to get a turbo rebuilt? or at least thoroughly inspected?
I am not anticipating the worst from Greddy, as the turbo's are still under warranty, but Just in case...I'd rather send them out sooner than later, so when the motor comes back, I'm not stuck waiting for the turbos to re-assemble the car.
12-20-2007, 04:26 AM
#106
Just FYI for those now considering dual widebands for all future builds, you can read the stock WB sensors on all late model Zs/Gs using Cipher. Accuracy in rich conditions is poor, but if the AFR comes up over 12, I've found they're not too far off from my TXS tuner wideband (so at least you'd know if something bad is happening).
12-20-2007, 04:27 AM
#107
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Originally Posted by rrmedicx
Meanwhile, in case my deal with Greddy goes sour, does any one know where to get a turbo rebuilt? or at least thoroughly inspected?
.
.
12-20-2007, 06:51 AM
#109
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Originally Posted by taurran
Is it just me or do the blades look like they're a bit chewed up on this turbo? Not trying to jump to conclusions, but it could support Julian's theory that it ingested something related to a motor issue.
Was turbo #1 on the problem cylinder bank?
Was turbo #1 on the problem cylinder bank?
12-20-2007, 06:58 AM
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Originally Posted by westpak
That end of the turbo wont see engine parts, if it is the driver's side it usually get the most dirt specially if still using the Greddy mushroom intake filter.
I'll consider myself owned.
12-20-2007, 07:23 AM
#111
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Originally Posted by westpak
with the "white smoke" report plus the fact that he had 575 RWHP at 11 pounds, it should have more like 475 RWHP, my fear is that they screwed up his engine with too much timing and basically a bad attempt at a tune.
12-20-2007, 07:27 AM
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Originally Posted by 350zDCalb
to get 575 whp on 11psi on a 3.54L engine (.020 over) you would need to be running like 25+ degrees of timing in areas that should be seeing 15 degrees... woops
12-20-2007, 07:32 AM
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Originally Posted by MRC Motorsports
Im glad Im not the only one who sees it for what it is..
12-20-2007, 07:33 AM
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Originally Posted by gothchick
Bad tune?
12-28-2007, 03:59 AM
#116
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So whats the update Randy?
And where has Junior been? He replied alot to my posts then stopped all of a sudden.
Did he realize he was responsible for your motor blowing??
And where has Junior been? He replied alot to my posts then stopped all of a sudden.
Did he realize he was responsible for your motor blowing??
12-28-2007, 10:18 AM
#118
Originally Posted by 350zDCalb
to get 575 whp on 11psi on a 3.54L engine (.020 over) you would need to be running like 25+ degrees of timing in areas that should be seeing 15 degrees... woops
I am still waiting to hear from Kyle who is actively disecting the motor as we speak. Once we deal with that end of things, I'll put it back in and give it another go.
Perhaps I will even entertain an upgraded EMS.We will see.
Maybe something with a little better control than the UTEC.
There is a lot of good stuff out there, but I was considering either the Haltech or Pro EFI.
Decisions, decisions.
12-28-2007, 10:21 AM
#119
Originally Posted by MRC Motorsports
So whats the update Randy?
And where has Junior been? He replied alot to my posts then stopped all of a sudden. Did he realize he was responsible for your motor blowing??
And where has Junior been? He replied alot to my posts then stopped all of a sudden.
Did he realize he was responsible for your motor blowing??It really doesn't help to discuss it any further until I hear from Kyle. So until then, I'll just sit tight.
12-29-2007, 02:34 PM
#120
OK. On a preliminary tear down, it appears that there are 4 bearing that have fried. 2 rod bearings and 2 main bearings.
Rings are all intact. (I found this to be very surprising)
Now, I need a little help in understanding why smoke would come from the driver side only. Would bearing failure smoke up and create a trail of smoke on only 1 side of the engine? If not than I guess the turbo bearings may have failed also. That might explain the driver side smoking. Justifying the whine. (Perhaps caused form metal flakes getting pushed into the turbo oil feed line.)
I still need help finding a reputable shop to evaluate a set of greddy turbos.
I have the option of going to a shop in CT, but I was hoping to find something closer to home (NYC). If not, I'm heading up to CT Monday.
I'll share more details when I get more info.
Rings are all intact. (I found this to be very surprising)
Now, I need a little help in understanding why smoke would come from the driver side only. Would bearing failure smoke up and create a trail of smoke on only 1 side of the engine? If not than I guess the turbo bearings may have failed also. That might explain the driver side smoking. Justifying the whine. (Perhaps caused form metal flakes getting pushed into the turbo oil feed line.)
I still need help finding a reputable shop to evaluate a set of greddy turbos.
I have the option of going to a shop in CT, but I was hoping to find something closer to home (NYC). If not, I'm heading up to CT Monday.
I'll share more details when I get more info.