Clear Shine
New member
I am looking at different engines and wanted to know is there a formula for finding out how much PSI I would be putting out with knowing the motor size and the gear drive GPM pump.....anyone know?
plug your numbers hit calculate it will tell hp requirments on the right. play with it and you can find psi ,gpm, hp, nozzle size.
I was responding to russ's post everything I wrote came across.
Any engine, regardless of HP, that will turn a pump at the specified RPM will produce the specified GPM & PSI output.
Pump output is based on RPM not HP. HP is needed only to achieve the desired RPM with a certain amount of efficiency.
This is simple logic folks, not rocket science. The pumps have already been engineered to produce a given PSI and GPM flow at a specific RPM.
Altering the RPM will change the GPM & PSI output. Find the pump specs and attach a motor that will turn it at the specified RPM and you're done.