10-01-2009, 12:00 AM
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#6
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Re: VNT oil drainback tube. I think I might want to buld one
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Naturally Aspirated
Join Date: Jul 2009
Location: oconto, wi
My Ride: 2000 VW TDI w/VNT25
1/4: 0.000
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man was this a PITA on my VW TDI. I used a custom drain back fitting that I made for a K04 turbo which has two holes. I found an rubber o-ring that fit snuggly inside the turbo fitting and then bolted it down tight with one bolt. It holds the oil pressure no problem. But, I had oil coming out the exhaust. Too much restriction and too much pressure. So, I made a restrictor for the feed line and still oil out the exhaust. So, I tried the stock VW fitting since the fitting I had made could not be modified. Still too much restriction. So, I made a new pipe with 1/2" ID and still oil but not as bad. And finally I made one with 5/8" hose and all is good.
Garrett sent me the layout print for the stock turbo fitting, but what I have for now will work. If anyone needs the print of the original design, please let me know.
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