First Try DIY: Oil+Fuel Pressure LCD Display

Averying

Agree w/ rusty. Mine hovers around 35psi at idle when my gauge shows 180°. I do have my oil pressure sensor connected pre-cooler though. Not sure how much of a difference that makes.


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MotorvateDIY

Ah... that explains the high pressure.

If the oil pressure gauge is mounted before the oil cooler, it is also mounted before the oil filter.

So... your actual engine oil pressure = pressure drop from the oil cooler - pressure drop from the oil filter - pressure drop from the fittings/lines.

From https://www.pegasusautoracing.com/do...ocID=TECH00133

Using real numbers, with a 10 GPM flow rate as an example (not uncommon for an engine running 6000 - 8000 RPM), the 20-row Series 9 will introduce a 5 psi pressure drop from inlet to outlet. (Note that a single 90 degree fitting in your oil line could cause more restriction than that.) The 25-row Series 6 will cause a 2.6 psi drop. .

It would be interesting to see the oil pressure with the sensor mounted to the engine for those that have an engine oil cooler - only then is it measuring the internal engine oil pressure after the cooler and after the oil filter.