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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old June 9th, 2019, 15:42   #16
Join Date: Apr 2019
Location: Upstate NY

So interestingly enough, we got the turbo out this afternoon and the impellers seem to be in ok condition and don't have any play. Considering the turbo has about 200k on it, it's probably not a bad idea to rebuild it at this point. Is there something else we could be missing that would cause oil to come out the tailpipe and go into the intercooler? Maybe just the seals blew out? Thoughts?
2003 Golf GLS TDI - 235k mi - stock
2003 Jetta GLS TDI - 296k mi - not stock
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Old June 9th, 2019, 16:02   #17
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Join Date: Oct 2016
Location: Pennsylvania
Fuel Economy: 32-35mpg

Probably bad seal
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Old June 9th, 2019, 16:52   #18
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Join Date: Aug 2004
Location: South of Boston
Fuel Economy: 50/45/37

No seals in a VNT-17. The impeller floats on a cushion of oil, and equal pressure on both sides of the center of the shaft keep the oil flowing through the turbo. When the turbo loses pressure on one side it'll push oil to the low pressure side. In this case it sounds like that's the turbine (hot) side, which is why oil came out the tailpipe. If the shaft isn't broken you may have galling of the shaft from oil contamination.
2002 Jetta wagon, 384K, RC3+; 1993 Mercedes-Benz 300D 2.5, 197K; 1997 Passat, 286K; '99.5 Golf, 260K; 2011 335d, 60K; 2015 Golf Sportwagen, 13K. Principal, http://www.idparts.com
Kid's cars: 2002 Golf TDI, 2002 Jetta TDI
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Old June 9th, 2019, 18:26   #19
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Join Date: Oct 2016
Location: Pennsylvania
Fuel Economy: 32-35mpg

Ahhh that’s good to know indigo!
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Old June 12th, 2019, 11:38   #20
Join Date: May 2012
Location: Franklin TN
Fuel Economy: 40-41 measured with Fuelly

Originally Posted by KERMA View Post
Gratz on 200k miles of service out of a "lowly" VNT17. Now build it better stronger faster than before. 17 plus
please contact info@kermatdi.com or 877-537-6283 and mention your personal details and this thread.
I second this, the S7 turbo they sell is excellent too. Previously, I ran a vnt17 and am now running an S7 and I couldn't be happier.

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