do i need a restrictor for my oil feed?
07-22-2006, 10:46 PM
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do i need a restrictor for my oil feed? hey guys i have a pt76gts i am running a 10an return and a 4an feed and i am getting oil past the seals... what can i use to retricte it>?
07-23-2006, 02:05 AM
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Originally Posted by SuperZ
either a larger return line or I have a nitrous jet in my feed line for a resrtictor
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07-23-2006, 03:46 PM
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Youd need a restrictor becuase the LS1 has such high oil pressure and the turbo doesnt need that much oil pressure and thats why it will blow oil past the seals. Imports have this problem too. Jose also to me to use one. Im going to start at .060 and go from there.
07-23-2006, 05:26 PM
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maybe that is my problem I am running a precision t 67 and a -10 return line that is around 4 inchs long with a PTS kit and it is getting oil into the intake side
but when I asked Jose this same ?? 6 or 8 months ago he said that it was only for the rear mount guys and I should be fine
WTF
07-23-2006, 06:52 PM
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Something I found...
IMPORTANT NOTE ABOUT -4AN FITTINGS AND LINES ON T3/T4 TURBOCHARGER INLETS
Please take note that in some cases (inlet oil pressures above 65 psi - like in import engines) the oil seal in the bearing cartridge may blow out and start leaking oil onto the back both the compressor and exhaust turbines. This is due to the higher flow characteristics of the 4AN (1/4" ID) line. The smaller -3AN line (3/16" ID) acts as a restrictor and helps regulate the oil pressure within the turbo bearing cartridge. Purchasing this -4AN flange indicates that you understand this risk and you are willing to deal with any associated problems.
IMPORTANT NOTE ABOUT -4AN FITTINGS AND LINES ON T3/T4 TURBOCHARGER INLETS
Please take note that in some cases (inlet oil pressures above 65 psi - like in import engines) the oil seal in the bearing cartridge may blow out and start leaking oil onto the back both the compressor and exhaust turbines. This is due to the higher flow characteristics of the 4AN (1/4" ID) line. The smaller -3AN line (3/16" ID) acts as a restrictor and helps regulate the oil pressure within the turbo bearing cartridge. Purchasing this -4AN flange indicates that you understand this risk and you are willing to deal with any associated problems.
07-23-2006, 06:55 PM
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Originally Posted by Country Boy
Something I found...
IMPORTANT NOTE ABOUT -4AN FITTINGS AND LINES ON T3/T4 TURBOCHARGER INLETS
Please take note that in some cases (inlet oil pressures above 65 psi - like in import engines) the oil seal in the bearing cartridge may blow out and start leaking oil onto the back both the compressor and exhaust turbines. This is due to the higher flow characteristics of the 4AN (1/4" ID) line. The smaller -3AN line (3/16" ID) acts as a restrictor and helps regulate the oil pressure within the turbo bearing cartridge. Purchasing this -4AN flange indicates that you understand this risk and you are willing to deal with any associated problems.
IMPORTANT NOTE ABOUT -4AN FITTINGS AND LINES ON T3/T4 TURBOCHARGER INLETS
Please take note that in some cases (inlet oil pressures above 65 psi - like in import engines) the oil seal in the bearing cartridge may blow out and start leaking oil onto the back both the compressor and exhaust turbines. This is due to the higher flow characteristics of the 4AN (1/4" ID) line. The smaller -3AN line (3/16" ID) acts as a restrictor and helps regulate the oil pressure within the turbo bearing cartridge. Purchasing this -4AN flange indicates that you understand this risk and you are willing to deal with any associated problems.
Sounds like its time for me to get 2 restrictors before throwing the new turbos back on my car.
07-23-2006, 07:10 PM
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Originally Posted by 67Firebird455
I have a -4an feed, -10an return on the mocal. I had to run an .050 restriction (got it from function 7 on the net) built into the flange, which I liked, makes it look professional... I am still getting a little bit of oil in the charge though.
Same one I have
07-23-2006, 07:37 PM
#18
Originally Posted by Country Boy
Same one I have
Check this...
Weather for my Area
Been working outside and in the garage since 12:30PM today, hot as heck... the stupid thing SHOULD say "Feels like 'HADES'", not 112.
07-23-2006, 10:46 PM
#20
Well now I am doubting my oil feed line. I made a steel 3/16 feed line with a 90 degree 1/8 npt at each end. The 3/16 line is approximately 9/64 inside diameter. I was hoping this would feed just the right amount with a -10 AN return line. Maybe it won't be enough?
