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Old 05-14-2013, 08:10 AM   #2701
bboylocob
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That's good. It sounds like an isolated probl. And that u will be up and running fine sometime next week for sure!!!
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Old 05-14-2013, 08:38 AM   #2702
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hopefully! your luck isnt very good :/
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Old 05-14-2013, 08:57 AM   #2703
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Tom you should have them switch it to the oiless chra while they have it. Yours will be runnimg for mine. Im going with a billet. 6065 oiless.
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Old 05-15-2013, 09:06 PM   #2704
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Originally Posted by slowgenius View Post
Tom you should have them switch it to the oiless chra while they have it. Yours will be runnimg for mine. Im going with a billet. 6065 oiless.
Yeah, I think I will.
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Old 05-15-2013, 09:08 PM   #2705
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My turbo arrived at COMP today (thanks to USPS priority mail for two day service to the west coast!). They have confirmed its arrival and will be calling me in two to three business days with a diagnosis. I just dont understand what happened here, it was totally fine when I took it apart. That being said, I did notice a large amount of oil coming out of the turbine, perhaps there was an issue with it that only surfaced now.
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Old 05-15-2013, 10:41 PM   #2706
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What kind of priming did you do before you fired her up for the first time?
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Old 05-16-2013, 08:24 PM   #2707
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Ugh crappy luck, maybe better it happened immediately then on the dyno!
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Old 05-18-2013, 10:01 PM   #2708
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What kind of priming did you do before you fired her up for the first time?

I have been using the same procedure for many years. In short, I crank the car for 30 seconds then wait for three-four minutes and repeat four more times for a total of 2.5 minutes of cranking. I typically start to see oil pressure half way through the second cranking session. A ball bearing turbo needs an extremely small amount of oil to function. There's about zero chance that the turbo was oil starved as I ran that possibility out first by verifying that I had oil going through the turbo and down the drain tube.
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Old 05-23-2013, 01:12 AM   #2709
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My now upgraded "oil-less" turbo is fixed and on its way back to me. Comp Turbo's came through with a special deal to save me some $$$ and I basically paid for the oil-less conversion and little else.

The best they could tell me about the failure was that something went wrong in the bearings that caused the turbo to go out of balance (really really really out of balance). Hopefully this is an isolated incident that I wont need to worry about again.
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Old 05-23-2013, 02:11 AM   #2710
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Sweet. Hope it runs good for you Tom. We need some feedback on that design. You may be one of the first to thoroghly disclose its performance on a suby.
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Old 05-24-2013, 11:10 PM   #2711
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Sweet. Hope it runs good for you Tom. We need some feedback on that design. You may be one of the first to thoroghly disclose its performance on a suby.

The oil-less design? Moore Performance has a few of them around and as far as I know, they all work well. I went oil-less because I have had a ton of oil related issues with this turbo and I am of the opinion that this is just about the only way to get that to stop. The oil-less units apparently need a bearing rebuild around every 20,000 miles which for me is four years. I will likely not have this car in four more years so it should last for the rest of the time that I own this car.
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Old 05-24-2013, 11:11 PM   #2712
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Originally Posted by binjoau View Post
Ugh crappy luck, maybe better it happened immediately then on the dyno!
True. Its a lot less expensive this way. The motor ingested a very slight amount of aluminum shavings so hopefully that wont cause any issues.
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Old 05-24-2013, 11:14 PM   #2713
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By the way, the noise that I heard from the car was exactly like the noise in this video:

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Old 05-24-2013, 11:22 PM   #2714
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The oil-less design? Moore Performance has a few of them around and as far as I know, they all work well. I went oil-less because I have had a ton of oil related issues with this turbo and I am of the opinion that this is just about the only way to get that to stop. The oil-less units apparently need a bearing rebuild around every 20,000 miles which for me is four years. I will likely not have this car in four more years so it should last for the rest of the time that I own this car.
Yeah when they first started getting those I was interested in the design. But neither of their cars are close to being daily driven, I think you will have more real world results I can go by.
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Old 05-24-2013, 11:57 PM   #2715
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Well, if they are the cars that I am thinking of, my car is much more of a basket case and far less "daily driveable than even those cars were. The only parts of my car that are stock are the dash board and the passenger seat!
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Old 05-25-2013, 08:07 AM   #2716
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Well, if they are the cars that I am thinking of, my car is much more of a basket case and far less "daily driveable than even those cars were. The only parts of my car that are stock are the dash board and the passenger seat!
Lol yeah I really like your setup, its a sweet car. What I mean is after it is back together I think you will actually drive it more than thier two shop cars put together. If there are other cars with the oiless turbos running around pittsburgh im not familliar with them.
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Old 05-25-2013, 08:11 AM   #2717
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By the way, the noise that I heard from the car was exactly like the noise in this video:

Turbo Compressor Blades Hit Compressor Housing - YouTube
Having slept on it, I just keep wishing that I would have known what this obviously common sound was in advance. It was pretty crazy and scared the hell out of me. Keep in mind, this was 40 yards into the maiden voyage!
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Old 05-25-2013, 12:18 PM   #2718
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Having slept on it, I just keep wishing that I would have known what this obviously common sound was in advance. It was pretty crazy and scared the hell out of me. Keep in mind, this was 40 yards into the maiden voyage!
is that car supercharged? all that i hear is roots/lysholm compressor whine and wind noise.
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Old 05-25-2013, 12:39 PM   #2719
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Lol yeah I really like your setup, its a sweet car. What I mean is after it is back together I think you will actually drive it more than thier two shop cars put together. If there are other cars with the oiless turbos running around pittsburgh im not familliar with them.
theres a jeep srt8 at the shop with a big gt40ish sized turbo running the comp turbo oilless unit and its been running nicely. have heard good things about them, and spool nicely.
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Old 05-25-2013, 12:57 PM   #2720
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theres a jeep srt8 at the shop with a big gt40ish sized turbo running the comp turbo oilless unit and its been running nicely. have heard good things about them, and spool nicely.
Thats cool! I contacted a few shops besides Moore and they still are few and far between. Im sold on the advantages, mainly that they are rebuild able, and that they can be mounted im almost any position.
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Old 05-25-2013, 01:23 PM   #2721
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Double post
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Old 05-25-2013, 10:25 PM   #2722
dexterous
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is that car supercharged? all that i hear is roots/lysholm compressor whine and wind noise.


That whistle / screaming noise is the compressor hitting the housing. That noise is exactly to the letter what my car was doing.
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Old 05-25-2013, 10:26 PM   #2723
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Thats cool! I contacted a few shops besides Moore and they still are few and far between. Im sold on the advantages, mainly that they are rebuild able, and that they can be mounted im almost any position.
I am sold because it cant be any worse that the oiling issues I keep having...
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Old 05-26-2013, 12:02 AM   #2724
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Tom, if you were worried about oiling to the turbo are you concerned about rod or main bearings at all? I don't really understand how you can have turbo oiling problems and not also have engine oiling problems if you supply pressure is good.
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Old 05-27-2013, 12:15 AM   #2725
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Tom, if you were worried about oiling to the turbo are you concerned about rod or main bearings at all? I don't really understand how you can have turbo oiling problems and not also have engine oiling problems if you supply pressure is good.

Well, I thought about that as well but when I was talking about oiling issues, I was actually talking about the issues that I have had in the past with the turbo leaking oil out the hot side. To your point, the oil pressure was definitely good and there was definitely oil flowing through the turbo, I am sure of this. I actually pulled the oil line off the turbo and cranked the car for a moment to see if oil came out. In fact, SO MUCH oil came out that it actually overflowed the very small container that I used and got oil on the top of my motor! Just to be sure, I changed the oil and drained it into a very light colored piece of plastic and let the oil run down the plastic into a light colored pan on the floor. While the oil drained, I kept a flashlight on the oil to see if anything was in the oil and I saw nothing out of the ordinary after careful inspection.

I supposed its possible that my extremely small 0.017 oil restrictor got clogged or partially blocked up which could also cause this issue. I have a filter on the oil line BUT, Google tells me that several people with similar turbos running the same restrictor and filter combo (both supplied by the turbo maker) have had nearly identical failures. None of those people ran Subarus but they are out there. Also keep in mind, Comp said that they couldn't say for sure why the turbo failed, only that something happened causing it to go off balance.

In addition to all this, I actually called Comp turbo last year and talked to them because I thought I could see run-out on the compressor wheel. I was told that was normal for a turbo that didn't have any oil running through it and since I wasn't having any issues at the time, I figured I would be ok.
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