GT30 seal
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From: Oregon City, OR, USA
GT30 seal
Turbo is losing some oil on the compressor side. I'm running 14 lbs. using a GT30. The shop where I bought the turbo, they installed it, thinks it's because I'm using synthetic oil. Oil line is -3 and drain is -12. Shop says turbo seals are metal not teflon or some other material and are probably still good, all I have to do is change back to regular oil. Supposedly ball bearing turbos tend to leak when synthetic is used? Anyone have similar experience?
Re: GT30 seal (purpleh22)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by purpleh22 »</TD></TR><TR><TD CLASS="quote">Turbo is losing some oil on the compressor side. I'm running 14 lbs. using a GT30. The shop where I bought the turbo, they installed it, thinks it's because I'm using synthetic oil. Oil line is -3 and drain is -12. Shop says turbo seals are metal not teflon or some other material and are probably still good, all I have to do is change back to regular oil. Supposedly ball bearing turbos tend to leak when synthetic is used? Anyone have similar experience?</TD></TR></TABLE>
The restrictor is not always necessary, though there are some that would argue otherwise. Honestly your drain is pretty large for the GT30R, and a -8AN would be a better standard. Though you don't need as much oil to layer the bearing as you would a journal bearing turbo, you don't want to drain SO much, that you'll lose the layer of protection needed to run properly. I am assuming that you're running the water lines of the system on this turbo, if not, I suggest you do that immediately, for you could destroy the cartridge.
Your technician is incorrect in stating that you cannot use synthetic oil in the GT30R or any ball-bearing turbo. Synthetic is just fine for the turbo, and in many cases creates an even better barrier of protection than regular oil. If you believe that the seals are destroyed, unfortunately that also means that the turbo cannot be rebuilt. Ball-bearing turbos are built specifically and would cost just as much to try and replace the cartridge as to get a new unit.. Check again, perhaps its just oil on the outside of the compressor wheel housing from your intake from blowby..
The restrictor is not always necessary, though there are some that would argue otherwise. Honestly your drain is pretty large for the GT30R, and a -8AN would be a better standard. Though you don't need as much oil to layer the bearing as you would a journal bearing turbo, you don't want to drain SO much, that you'll lose the layer of protection needed to run properly. I am assuming that you're running the water lines of the system on this turbo, if not, I suggest you do that immediately, for you could destroy the cartridge.
Your technician is incorrect in stating that you cannot use synthetic oil in the GT30R or any ball-bearing turbo. Synthetic is just fine for the turbo, and in many cases creates an even better barrier of protection than regular oil. If you believe that the seals are destroyed, unfortunately that also means that the turbo cannot be rebuilt. Ball-bearing turbos are built specifically and would cost just as much to try and replace the cartridge as to get a new unit.. Check again, perhaps its just oil on the outside of the compressor wheel housing from your intake from blowby..
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