i did look into the drill motor rating and it is 3000 rpm. i doubt it is turning that fast loaded by the oil pump but even at half that rating say, 1500 rpm , that is 3000 rpm engine speed. and to only 40 psi with cold oil concerns me. just looking for a response from someone with experience using or trying a standard type pump. btw the machine shop told me to run it with the standard pump and see what i have. that makes me uncomfortable.
You are making a mountain out of a mole hill. That drill isn't turning the oil pump at 1500 RPM's. If it was, that's a 750 RPM idle and that's lower than I let anything idle with other than stock springs.
You will never duplicate with a drill and a static engine what happens dynamically when the engine is running.
Run it. I think pull be surprised.
