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Old Nov 1, 2010 | 12:18 AM
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Default Rebuilt Turbo

I recently rebuilt my twin turbos. My oil pump failed and smoked my turbos. I installed a rebuild kit and a new exa-pump but its throwing oil out of the tail pipe. Could this be a seal problem?
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Old Nov 1, 2010 | 12:22 AM
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sounds like failed seals
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Old Nov 1, 2010 | 03:49 AM
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Did you have the oil lines cleaned/replaced as well? --You have to in order for the warranty on the rebuild to be valid.
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Old Nov 1, 2010 | 09:58 AM
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I did not replace or clean the oil lines. I will give that a shot. Thanks.
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Old Nov 1, 2010 | 09:59 AM
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What could have cause them to fail, as I had just installed new ones? I simply started the car and let it idle.
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Old Nov 1, 2010 | 10:31 AM
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pull the turbos back off and verify if oil is bypassing them. It may have had oil still in the exhaust. Do you have restrictors in place?
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Old Nov 1, 2010 | 10:40 AM
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The turbos are off as we speak. Inspecting them to see they are being breached by the oil. Excuse my ignorance, but what restrictors and in what place?
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Old Nov 1, 2010 | 10:46 AM
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restrictors go between the oil line and turbo to restrict oil pressure going in.

I had one of my Garrett's blow a seal. When I pulled the exhaust off I poured out over a QT of oil.
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Old Nov 1, 2010 | 10:50 AM
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That's might be the problem! The STS set-up had a device that looked like a PVC valve sitting next to the inlet and outlet ports. I replaced it with an Exa-pump, which didn't have this device.
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Old Nov 1, 2010 | 10:58 AM
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So what can I replace it with? And can I place it anywhere before the turbos?
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Old Nov 1, 2010 | 11:11 AM
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would help if you took pics and posted them but I am suspecting the"pcv" that you are referencing are check valves. Those help keep the oil flowing in one direction and not backing up into the turbos.

Restrictors are "usually" mounted between the oil feed line and the turbo. Generally on the turbo. Ill try and find a pic on one of mine to show you.
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Old Nov 1, 2010 | 11:15 AM
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This is the restrictor built into mine from PTE

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Old Nov 1, 2010 | 11:56 AM
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Thanks. That really helps. I will snap some pic of mine for comparison.
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Old Nov 2, 2010 | 09:48 AM
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Originally Posted by carnut101
Did you have the oil lines cleaned/replaced as well? --You have to in order for the warranty on the rebuild to be valid.

It's critical that the return lines are not kinked and free flowing.Is this a new setup?What kit?If the exhaust/mufflers did a lot of oil,it takes a long time to burn it off by just running the car.
Good luck.
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Old Nov 2, 2010 | 11:06 AM
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Its an STS rear mount twin turbo. It worked fine until the original scavage pump failed. I replaced it with a more powerful one (Exa-pump). It flows 3 gpm instead of 1-2 gpm. I haven't checked the return lines. There are no mufflers, however I got at least a quart of oil out of the tailpipe before I shut it off.
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Old Nov 2, 2010 | 11:54 AM
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I am running journal bearings. So does the restrictor valve still apply?
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Old Nov 2, 2010 | 02:45 PM
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You either got blown seals or just need a restricter in the line . I had a single turbo car with a journal bearing turbo with no restricter and no problem's but everybody's setup is different .If your setup is the same as it was just a different pump blown seals would probaly be the answer.
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Old Nov 2, 2010 | 02:59 PM
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are you sure the pump is pulling in the correct direction?
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Old Nov 2, 2010 | 03:50 PM
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Could I have blown the seal just by starting the car. All I did was let it idle for about 5 minutes.
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Old Nov 2, 2010 | 03:50 PM
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I will check that when I get home.
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