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#1 |
Scooby Specialist
Member#: 1954
Join Date: Jul 2000
Location: Long Beach, CA, USA
Vehicle:1997 Impreza L/WRS WRB |
![]() For those of you people with turbos, is the stock oil pressure enought to circulate to the turbo and back to the engine?
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#2 |
Sooby Guru
Member#: 1914
Join Date: Jul 2000
Chapter/Region:
SWIC
Location: 2014 Q60S, 2016 Chevy SS
Vehicle:2000 2.5RS w/ EJ22T swap and N20. gone. : ( |
![]() yes... If not, I don't think they make a High pressure Oil pump for our cars!
Eric |
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#3 |
Scooby Specialist
Member#: 1954
Join Date: Jul 2000
Location: Long Beach, CA, USA
Vehicle:1997 Impreza L/WRS WRB |
![]() hehe thats what I was afraid of. OK, that makes me happy.
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#4 |
Sooby Guru
Member#: 1914
Join Date: Jul 2000
Chapter/Region:
SWIC
Location: 2014 Q60S, 2016 Chevy SS
Vehicle:2000 2.5RS w/ EJ22T swap and N20. gone. : ( |
![]() ![]() ![]() Eric |
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#5 |
Scooby Specialist
Member#: 1954
Join Date: Jul 2000
Location: Long Beach, CA, USA
Vehicle:1997 Impreza L/WRS WRB |
![]() as long as the pump doesn't exceed 25 psi the turbo would love the added pressure. I just wasn't sure our US-spec imprezas had the uhmph in their oil lines.
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#6 |
Sooby Guru
Member#: 1914
Join Date: Jul 2000
Chapter/Region:
SWIC
Location: 2014 Q60S, 2016 Chevy SS
Vehicle:2000 2.5RS w/ EJ22T swap and N20. gone. : ( |
![]() I think I would rather have a high Volume pump than high pressure pump but either would be nice... I don't think it is needed though.
Eric |
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#7 |
Dynamic Uno
Member#: 1
Join Date: Jun 1999
Chapter/Region:
BAIC
Location: Alameda, CA
Vehicle:2011 Impreza WRX STi Black |
![]() You can increase the oil pressure by installing a restrictor in one of the oil passages. IIRC, thats what Group N cars' drivers do, since you are not allowed to change the oilpump. It works, hehe. If I would do it, I would also try to get/make a larger capacity oil pan to increase the amount of oil in the system.
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#8 |
Scooby Specialist
Member#: 6
Join Date: Jun 1999
Location: South Jersey
Vehicle:2013 BMW M3 Coupe Interlagos Blue |
![]() Yes, the stock oil pressure is enough. According to Turbonetics, the Garrett T03/T4 was originally designed for low oil pressure deisel applications. As a matter of fact, I just changed the oil feed line from AN -4 to AN -3 to help cut down on the oil supply to the turbo so as not to cause blow-by. It seemed to be OK with the -4, but RalliSpec suggested -3 after speaking with Turbonetics.
Steve http://www.lagging.com/ |
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#9 |
Scooby Specialist
Member#: 3086
Join Date: Nov 2000
Location: Coram LI NY
Vehicle:2001 2.5 RS Silver |
![]() According to my Oil Pressure gauge you will have just under 25PSI at idle. And just over 75PSi under load.
That is very enough unless u run some kind of very tricky setup. Eugene |
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#10 |
Scooby Specialist
Member#: 296
Join Date: Sep 1999
Location: Derby, Derbyshire, England
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![]() Howdy..
That sounds about the same as the WRX/STI Turbo cars.. I think they all use the same pump. When I rebuild engines I tend to increase the pressure by an extra bar.. to take them upto 7bar... this is used by the GrpN rally teams.. (as Alex mentioned) You shim the pressure relief valve piston..or fit a stronger spring.. simple ![]() J. |
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#11 |
Scooby Specialist
Member#: 1954
Join Date: Jul 2000
Location: Long Beach, CA, USA
Vehicle:1997 Impreza L/WRS WRB |
![]() thank you for all the answers. Thats one less thing to worry about
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