Performance Pack Oil Pressure PSI?

[FIVE_LITER]

I would wait tills its at least normal before giving full throttle. When it's low, it's very thick and the pressure can be too high so the by pass valve would be open not filtering oil through the filter element.

That's what I do currently. I pay even closer attention to it now that I have the blower on the car.

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[Trackaholic]

I have the GT on a different drive but for the Shelby GT350 Engine:
Oil pressure @ idle with engine at normal operating temperature 10–15 psi (69–103 kPa)
Oil pressure @ 2,000 rpm with engine at normal operating temperature 30–40 psi (207–276 kPa)

Notice, spec is at normal operating temperature. They do not worry about cold oil pressure because its variable.

Modern engines warm up very fast, ECT comes right up and with low vis. oils 5W-10Ws cold oil does not really factor in. If the coolant is up to temp the engine is warm, the oil spraying around is removing heat as it increases in viscosity. These engines all run .001-.002 bearing clearance, coolant temp is more important to get everything to proper size than oil temp or oil pressure.

Those pressure numbers are not correct for the GT350. It runs much higher pressure, because it has 5-50 oil rather than 5-20.

Those numbers seem more like Coyote numbers.

GT350 is more like:
40 psi @ idle
75 psi @ 2000 RPM

My 350 Z is:
6 psi @ idle
30 psi @ 2000 RPM

That thing runs scary low pressure at idle.

-T

 

[EFI]

I'm curious as to what the minimum pressure at idle should be. I'm thinking ~ 20 psi?

Watched TV show where the guys brand new race motor's oil pressure wouldn't get above 35psi.. He ended up destroying his bearings.

So that thought is going though my head as I see my gauge sitting at 20-25psi. I realize that 20 psi at idle is very different then the TV show guy not seeing a pressure over 35psi...at high rpms.

You don't need alot of oil pressure at idle, especially one as low as the 625rpm the Coyote runs at. 20psi is more than enough for that...heck you could get away with as low as 10-12 there and your motor would live a long happy life.

It's at higher rpm where you want more oil pressure because that's when the bearings and other internal parts are under more stress. The general rule is 10psi per 1000rpm, but that varies based on engine and tolerances.

 

[JaxS550]

Oil pressure is 90-100 with cold oil. I drive lightly until the engine warms up. Then pressure at idle is around 30, crossing is around 50.

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