N14 oil pressure when cranking

It is a high volume, low pressure engine.

 

Have to remember that cranking speed is significantly lower than idle speed - I'd estimate at a bit more than 1/3. That means the oil pump is going to move significantly more oil once its idling.

I'd start it up, its building oil pressure while cranking. Just watch your gauge and react accordingly if pressure is not building.

 

Just what @AModelCat said -

I’d fire it up and monitor oil pressure and shut it down if it doesn’t rise above 10psi.

From memory you’ll be at 25-30 psi with hot oil, 35 plus with cold oil at idle.

Have someone stand by and check for leaks too.

 

When I start the oil pressure sensor goes almost all the way up and then drops down to 20. After engine warms up it drops to 15. It would show 10 only when completely warmed up.
Do u have an aftermarket or original oil sensor? Aftermarket show 5 psi less from my experience

 

ScanGauge Diesel

I use one for my 1995, it at least reads the information to the ECM, bypassing the often incorrect older manual guages.

 

Fire it up. I've seen plenty of hot N14's idling at 9 psi. I can't recall for certain what Cummins spec was on a hot engine, but IIRC, 8 psi.