 My 914-6 GT Tribute, low oil pressure when warned up. |
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| mlindner |
 Aug 18 2021, 06:47 AM
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#1
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Senior Member  Group: Members Posts: 1,575 Joined: 11-November 11 From: Merrimac, WI Member No.: 13,770 Region Association: Upper MidWest 
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Every thing seems fine, start up, warm up all good oil pressure reading. But after a while at idle the oil pressure gauge is almost nothing. Running 20-50 valvaline for brake in. Should I go to straight 60 wt race oil. This car is mostly a track car, or when driven on the street it likes the 5 to 7,000 rpm range. Not a cold weather 914. Thanks, Mark
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| IronHillRestorations |
Aug 19 2021, 06:21 AM
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#2
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I. I. R. C. Group: Members Posts: 6,774 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None
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I'm with sixnotfour, you should have 1 bar per 1000 rpm (1 bar is 14.5 psi) if you have less than that your on borrowed time, and maybe borrowed money too
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| stownsen914 |
Aug 19 2021, 08:14 AM
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#3
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Senior Member Group: Members Posts: 930 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
This 1 bar per 1000 RPM guidance - is that for SC and later? And do you mean you want 6 bar at 6000 RPM? I'd think not ...
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| Justinp71 |
Aug 19 2021, 09:47 AM
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#4
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Senior Member Group: Members Posts: 1,600 Joined: 11-October 04 From: Sacramento, CA Member No.: 2,922 Region Association: None
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QUOTE(stownsen914 @ Aug 19 2021, 07:14 AM)  This 1 bar per 1000 RPM guidance - is that for SC and later? And do you mean you want 6 bar at 6000 RPM? I'd think not ... That's one question I am always curious about, I believe the system is designed to relieve around 70psi at the oil pump and the pressure is measured after the oil galley before the oil goes into the cams. Mine reliefs at 60psi (4bar) when warmed up and doesn't go any higher which makes sense to me. When cold the oil is so thick and the oil cooler is bypassed so you can easily make 5-8 bar pressure, but I believe its over 100psi is bad for the oil cooler. My uncle blew his once revving too high with cold oil. As for oil the most popular is 20w50 VR1, Mobil 1 15w50 and Penn Grade (aka brad penn). There are a couple others too I am not familiar with. Just don't use GTX anymore they stopped adding Zinc. Here is an insanely long thread about oil (IMG:style_emoticons/default/smile.gif)- http://forums.pelicanparts.com/porsche-911...m-oils-107.html Another one about the relief system- http://forums.pelicanparts.com/911-engine-...lve-thread.html |
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Posts in this topic
mlindner My 914-6 GT Tribute, low oil pressure when warned up. Aug 18 2021, 06:47 AM
infraredcalvin When warm does it build with rpm, if so how much? ... Aug 18 2021, 07:55 AM
wndsrfr What rpm at idle....keep mine about 1000 ... Aug 18 2021, 03:37 PM mlindner Thanks Pat, a little more information. The engine ... Aug 18 2021, 09:01 AM Justinp71 Hmm, my 3.2 is a lot different than yours. Warmed ... Aug 18 2021, 05:50 PM sixnotfour Must be Racing Clearances ..Haha, general rule is ... Aug 18 2021, 06:41 PM stownsen914 I believe 10 psi per 1000 RPM is the rule of thumb... Aug 18 2021, 08:46 PM stownsen914 Re: the cam oil restrictors, I assume you did your... Aug 18 2021, 08:50 PM 930cabman
I believe 10 psi per 1000 RPM is the rule of thum... Jul 13 2024, 01:44 PM mlindner Hi Perry, on my gauge the first number after 0 is ... Aug 19 2021, 08:19 AM infraredcalvin The old car loved Brad penn/penngrade, I switched ... Aug 19 2021, 10:03 PM technicalninja Have you put a mechanical gauge on it yet?
I woul... Jul 13 2024, 03:53 PM |
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