Oil pump shim

[RPM1]

When we use to shim our oil pumps for the race cars back in the day small block Chevy
Back b in the day before all the aftermarket parts about .040 was all it took to go to about 80 lbs from about 50 those wear gear pumps 2 Lil gears like a hydrolic pump
If memory serves me right as I liked at the Cummings I think that type of pump is called a geolator, rawze would know the exact , but to me they are kinda a cheep looking pump
Case ih use to use Cummins in there combines an certain years wear known to have oil pump problems the idler gear that drives off crank or what ever would shear the teath off
Or the bearing would go out , similar design as the isx only u could change gear out through a cover on front of motor , any way it's to bad some do sant make a aftermarket
Pump with Lil more volume an that would up the pressure and be like
More durable , adding half inch of shim seams a Lil exsasave compared to upping system pressure in say a hydraulic system with the presser release valve , like rawze says I think the pump life will be shortaned, I would program a engine shut down if no oil press just to be safe . Just my 2 cents