How quickly should oil pressure come up?

toolmanmike said
I'll think about that next time I spin mine over to fill the carb after all the gas has evaporated out from setting for a few weeks. In a perfect world we would all have fuel injection or at least a priming pump to help the engine start faster. I can't help but think that 300 or 400 cranking rpm wouldn't pick some oil up and send it through the crank.

It does! Way back before I used oil primer bits & my drill, I used to prime new engines with just the starter. That is what I had at the time, and it worked fine to provide oil to the rocker shafts proving the engine was getting oil before the first startup.