trwebb26 Posted October 25, 2009 Share Posted October 25, 2009 So - for those who have an oil pressure guage... Fill in as much as you know: Turbo or N/A oil pump: Oil weight used: Synthetic or Natural: Oil Pressure at Idle when cold: Oil Pressure at Idle when hot: Highest oil pressure seen when cold (max RPM): Highest oil pressure seen when hot (max RPM): Thanks. Quote Link to comment Share on other sites More sharing options...
X64v Posted October 25, 2009 Share Posted October 25, 2009 Turbo or N/A oil pump: Turbo Oil weight used: 20w-50 Synthetic or Natural: Synthetic Oil Pressure at Idle when cold: 35psi Oil Pressure at Idle when hot: 10psi Highest oil pressure seen when cold (max RPM): 75psi (3000rpm) Highest oil pressure seen when hot (max RPM): 65psi (7200rpm) Turbo: Yes Turbo oil restrictor size: .060" This was on my old motor with new rod bearings but 200k miles on main bearings. New motor isn't broken in yet but numbers are looking to be similar. What's the purpose of this thread? Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted October 25, 2009 Author Share Posted October 25, 2009 The main purpose is to get a little more understanding of what a "normal" oil pressure is for the L6. I started this thread a while back with very little response. http://forums.hybridz.org/showthread.php?t=155002 By collecting a little more information about oil pressures I'll be reconfirming my decision not to run a restrictor for the oil send of my Holset. Quote Link to comment Share on other sites More sharing options...
MAG58 Posted October 25, 2009 Share Posted October 25, 2009 Turbo or N/A oil pump: KA24E (turbo) Oil weight used: Brad-Penn 10W-40 Synthetic or Natural: Non-Synthetic Oil Pressure at Idle when cold: 35psi Oil Pressure at Idle when hot: 19psi Highest oil pressure seen when cold (max RPM): 75psi (2000rpm) Highest oil pressure seen when hot (max RPM): 70psi (6500rpm) Turbo: No Main Clearance: .002" Rod Clearance: .0025" Quote Link to comment Share on other sites More sharing options...
wigenOut-S30 Posted October 25, 2009 Share Posted October 25, 2009 Turbo or N/A oil pump: Turbo Oil weight used: 15W 40 Synthetic or Natural: Synthetic Oil Pressure at Idle when cold: 45 Oil Pressure at Idle when hot: 30 Highest oil pressure seen when cold (max RPM): 3000rpm 75psi Highest oil pressure seen when hot (max RPM):6500rpm 75-80psi -4 oil feed line Im trying to decide on if I should run a restrictor in my Garrett T3/T4 turbo myself. Quote Link to comment Share on other sites More sharing options...
ktm Posted October 25, 2009 Share Posted October 25, 2009 I am not running a restrictor on my setup, but I am using a -3 AN line instead of a -4 AN. Quote Link to comment Share on other sites More sharing options...
wigenOut-S30 Posted October 26, 2009 Share Posted October 26, 2009 Yeah, Im wondering if the -4 is just too large of a line. Quote Link to comment Share on other sites More sharing options...
trwebb26 Posted October 27, 2009 Author Share Posted October 27, 2009 Well... If the most pressure I can make on the passenger side of the car where the oil pressure sending unit is at idle is 10psi... then it doesn't matter at all how big the line is. I could run 1" diameter line to the inlet of the turbo... all the line diamter does is make 100% sure that I get the exact same pressure on the right side of the engine as I do on the left side of the engine at the inlet of the turbo (zero pressure drop across the line). Knowing that the holset requires 10psi MINIMUM... I need the biggest diameter oil line possible to ensure that I'm getting all of that pressure at the inlet of the turbo. Now... If I'm making 30psi oil pressure at idle - I may consider reducing the line size or adding a restrictor. Both of them do the same thing - increases the difference in pressure between the oil pressure sending unit and the inlet of the turbo. Make sense? Quote Link to comment Share on other sites More sharing options...
PanzerAce Posted October 29, 2009 Share Posted October 29, 2009 Oil pump: Turbo Oil weight: AMSOIL 10W-40 Synthetic or Natural: Synthetic Oil Pressure at Idle when cold: 45 Oil Pressure at Idle when hot: 10 Highest oil pressure seen when cold (max RPM): 55-60 (2000rpm. I don't go above 2500rpm even till I see my oil pressure drop to it's hot idle) Highest oil pressure seen when hot (max RPM): 60 (4500rpm. Never in gear long enough any higher to get a steady read on the pressure) No turbo Quote Link to comment Share on other sites More sharing options...
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