Oil pressure gage psi range
- Gary Koehler
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Oil pressure gage psi range
I just installed a 904 style gage from PA Speedo in my '62; it has a healthy 912 motor in it. Just noticed that the max pressure is 70 psi!! Senior moment I guess, and I need to change its range. Seeking advice on what the maximum and mid-range pressures should be for a large pump motor. Thanks for all advice,
- David Jones
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Re: Oil pressure gage psi range
Depends on the oil pressure relief valve spring but cold oil pressures with a heavy oil could easily exceed 60 psi if the engine were revved with cold oil.
If I had known I would live this long I would have pushed the envelope a little harder.
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David Jones #9715
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- Doug McDonnell
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Re: Oil pressure gage psi range
Most PSI gauges are 0-70 and the BAR ones are 0-5 BAR . 5 BAR is 72.5189 PSI You should be fine. viewtopic.php?f=1&t=9432&hilit=maximum+oil+pressure
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- Ron LaDow
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Re: Oil pressure gage psi range
Gary,
The pressure at that point (after the relief valve) is supposed to peak at something like 46PSI. If you need a gauge with a higher reading, someone figured they knew more about oil pressure than the factory.
The pressure at that point (after the relief valve) is supposed to peak at something like 46PSI. If you need a gauge with a higher reading, someone figured they knew more about oil pressure than the factory.
Ron LaDow
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- Vic Skirmants
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Re: Oil pressure gage psi range
46 PSI?Where did that number come from?
- Ron LaDow
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Re: Oil pressure gage psi range
Spec book, pg 25:Vic Skirmants wrote:46 PSI?Where did that number come from?
"27. Oil Pressure, warm engine at 2,500RPM, 3.0 bar."
Is there a spec otherwise?
Ron LaDow
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- Al Cole
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Re: Oil pressure gage psi range
3.0 Bar equals 43.5 PSI
AL Cole
'62 S-90 Cabrio.
'64 C Coupe
Paris Mtn., S.C.
'62 S-90 Cabrio.
'64 C Coupe
Paris Mtn., S.C.
- Ron LaDow
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Re: Oil pressure gage psi range
Al, when Vic asked, I looked at what was on the desk. I recall the equivalent of "46.8 PSIG" in another shop reference back there in the hall.Al Cole wrote:3.0 Bar equals 43.5 PSI
Regardless, a 70PSI gauge is gonna be fine.
Ron LaDow
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- Neil M. Fennessey
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Re: Oil pressure gage psi range
Atmospheric pressure at sea level at standard conditions = 14.7 psi = 1 atm = 1 bar
At 5 bar, the sender resistance should be about 180 ohms. At 0 bar = 0 psi, the resistance is 10 ohms.
At 5 bar, the sender resistance should be about 180 ohms. At 0 bar = 0 psi, the resistance is 10 ohms.
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- Neil
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- Neil
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- Neil Bardsley
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Re: Oil pressure gage psi range
I regularly have about 65/70 psi on my aftermarket gauge when I rev the engine. It idles about 35/40. I believe the gauge was calibrated by the previous owner before installing.