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Old Jun 28, 2014 | 07:51 AM
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Oil pressure ranges

What is considered a normal range of oil pressure readings. I may not have been paying attention before but mine seems currently high. During hard acceleration my digital readout on the info. screen is showing 50 to 62 psi.The bars are pushing right up to the red zone but not into it. Thanks in advance.
 
Old Jun 28, 2014 | 10:50 AM
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Originally Posted by wanderfalke
What is considered a normal range of oil pressure readings. I may not have been paying attention before but mine seems currently high. During hard acceleration my digital readout on the info. screen is showing 50 to 62 psi.The bars are pushing right up to the red zone but not into it. Thanks in advance.
I've seen it as well. And it it what I would expect...

It is also typical from what I've observed on most engine types... Also consider delivery of oil to the engine parts and bearings is most needed during high rpms.. This is needed for not only lubrication but to cool the bearings and parts...

The other thing is that the engine is new.. As the engine ages there is a tendency for the oil pressure to reduce just slightly as there is more wear and clearance.. ( not a porsche thing just a general engine thing) .. Often on an old worn out engine folks use higher weight oil just to maintain the pressure as a last resort..

I wouldn't worry about it.. Pretty normal
 

Last edited by scatkins; Jun 28, 2014 at 10:53 AM.
Old Jun 28, 2014 | 01:00 PM
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Originally Posted by scatkins
I've seen it as well. And it it what I would expect...



The other thing is that the engine is new.. As the engine ages there is a tendency for the oil pressure to reduce just slightly as there is more wear and clearance.. ( not a porsche thing just a general engine thing) .. Often on an old worn out engine folks use higher weight oil just to maintain the pressure as a last resort..

wouldn't worry about it.. Pretty normal
Thanks was just surprised to see the 63psi under full power push right against the red bar. I think the oil is getting pushed up nice and high in the engine. Anyone know how high it needs to be to throw a warning.
 
Old Jun 28, 2014 | 02:46 PM
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The manual says the oil pressure should be at least 3.5 bar (50.7 psi) at 5,000 rpm, but not sure what the max oil pressure is before a warning. I think its more likely to have a problem when it is too low, assuming the oil is not overfilled.
 
Old Jun 29, 2014 | 01:24 PM
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I read somewhere (?) that in sport+ the oil is routed through the engine differently and is cooled to 20 degrees less than when in either normal or sport modes. I don't remember which forum thread I saw this in, and don't know if its correct. Anyone else heard of this? If I remember, oil is 240 degrees in normal or sport, and 220 in sport+.
 
Old Jun 29, 2014 | 01:55 PM
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Originally Posted by wanderfalke
Thanks was just surprised to see the 63psi under full power push right against the red bar. I think the oil is getting pushed up nice and high in the engine. Anyone know how high it needs to be to throw a warning.
I'd be surprised if there is a warning.. In reality no one ever really worries about too high oil pressure.

I've built a lot of engines in my younger days (not Porsche) and there are things you worry about when bringing up a new engine.. (low oil pressure, high oil temp or water temp).. too high oil pressure at high RPM.... isn't generally one of them.

Yeah If it was really high at Idle I'd think about some kind of blockage some where.. but at 5K RPM.. nope as long as it was in normal range at idle... not worrying about that at the high end..

My guess is that it is spec'd high so that as the pump wears.. it will still have good pressure and flow at 100K+ miles.. So up front it is probably on the high side during high RPM operation. If you keep the car to higher mileage you may find that it isn't quite as high in the same situations.
 
Old Jun 29, 2014 | 04:08 PM
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My 991 oil temperature runs at least twenty degrees F cooler in Sport mode, as compared to in normal mode. No Sport Chrono, so I don't know what would happen in Sport+.
 
Old Jun 29, 2014 | 04:51 PM
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Today I took the car out for a spin, the only way I could peg the rpms at 5000 was to remain in third gear. When going uphill it would report 53psi when going downhill or on the flats it would report 48psi.When driving 5000 rpms.

The oil pressure readout would report lower psi values in lower gears and higher values in higher gears at 5000rpms. So driving in 6th gear at 5000 rpms it might meet the 51psi standard.
 
Old Jun 29, 2014 | 07:31 PM
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Originally Posted by wanderfalke
Today I took the car out for a spin, the only way I could peg the rpms at 5000 was to remain in third gear. When going uphill it would report 53psi when going downhill or on the flats it would report 48psi.When driving 5000 rpms. The oil pressure readout would report lower psi values in lower gears and higher values in higher gears at 5000rpms. So driving in 6th gear at 5000 rpms it might meet the 51psi standard.
The other thing to note is there isn't a "redline" on the oil gauge You will note it is just the end of the gauge.. As opposed to water temp..
 
Old Jun 29, 2014 | 08:00 PM
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Originally Posted by scatkins
The other thing to note is there isn't a "redline" on the oil gauge You will note it is just the end of the gauge.. As opposed to water temp..
I think there is red bar on the digital readout on the info. screen. Thank goodness for the info screen . The black dial gauges are hard to see during the day.

You really need to own one of these cars before to know what to custom order next time.So some day I will need to order one with white dials. I think when the next version hits the .2 phase will be just about perfect. Anyway thats the story to my wife and I am sticking to it.
 
Old Jun 29, 2014 | 08:25 PM
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Originally Posted by wanderfalke
I think there is red bar on the digital readout on the info. screen. Thank goodness for the info screen . The black dial gauges are hard to see during the day. You really need to own one of these cars before to know what to custom order next time.So some day I will need to order one with white dials. I think when the next version hits the .2 phase will be just about perfect. Anyway thats the story to my wife and I am sticking to it.
I wanted white gauges, but I couldn't justify $500 for it then another 350 for the white sport chrono.. But wish I did..
 
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