Oil Pressure

[SkipBurney]

What kind of oil pressure are you guys getting from your 7.3. I ran a mechanical gauge to mine this weekend and I have 40 lbs is this high, low or about average for these engines. I would love to see 60 or better but if 40 is good then I am gonna just run it.

 

[IDIBRONCO]

Using the old adage of 10 PSI for every 1000 RPM, you've got more than enough oil pressure. I wouldn't worry about 40 PSI at all. Remember, that saying was created for engines that don't have piston cooling jets. Those will drop oil pressure by quite a bit, depending on where you take your readings from. You're also ahead of the game compared to the vast majority of people out there. You actually know what your oil pressure is. Most just look at the factory gauges and think"Ok it points at the 'M' in normal so I've got good oil pressure".

 

[Scotty4]

But @IDIBRONCO I thought the whole thing about these old Fords was no power steering and the ancient art of converting letters to numbers!

 

[IDIBRONCO]

I've never owned a truck with "Armstrong" power steering and the numbers to letters conversion would be fine if the letters actually meant anything. Of course I did have a couple of cars that had that type of power steering.

 

[Shadetreemechanic]

40 is fine. Minimum idle spec is 7psi I believe and I have run several at that low end without issue.

 

[SLC97SR5]

On my fresh Promar engine I see 40+ at cold idle and 9-12 hot sitting at a stoplight. Cruising at 65mph around 2300RPM and 190* I have 30-40 psi.

 

[SLC97SR5]

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[SkipBurney]

I've never owned a truck with "Armstrong" power steering and the numbers to letters conversion would be fine if the letters actually meant anything. Of course I did have a couple of cars that had that type of power steering.

I had a truck with WD 40 air conditioning. Windows Down and 40 mph

 

[IDIBRONCO]

I had a truck with WD 40 air conditioning. Windows Down and 40 mph

Most of mine were like that.

 

[Garbage_Mechan]

These engines have an oil pressure regulator not a relief valve so the oil pressure plateaus instead of climbing higher and higher.