So I rebuilt a stock motor that I had planned to use for spare parts since the pistons were seized. Paid $50 for it in a rolling frame. Upon tear down the entire engine internals were in very good condition, except pistons/cylinders. Even the front cam chain guide was intact with plenty of plastic remaining. It was clear the motor had never been torn apart before, and the previous owner(s) just neglected it. Decided to rebuild it. I replaced pistons with over-sized from Cruzin Image, and bored out the cylinders. Had the heads/valves professionally done at a machine shop. Since it'll be several months before I'm ready to put this engine into a build, i wanted to make sure engine internals were well-lubricated in addition to the normal pre-lubing done during build-up process. I removed one of the bolts from the head at the top of the oil feed tube. Filled the motor with 20w-50 Valvoline. It's about 60 degrees f in the garage. Put teaspoon of 2-stroke oil in top of cylinders and left plugs out. Hooked up electric starter and proceeded to crank it over at 10-15 second intervals. I also left the side oil filter out. I thought I'd immediately see oil come to the top of the oil feed tube, but nothing. Is it due to the thick/cool oil? After cranking it several times, I removed the side cover to the oil filter and oil poured out, so I know the pump is working (at least to that point). Can anyone with experience comment on how long it should take to get oil to the top of the oil feed tube? Should I tear the oil pump down and re-measure clearances? Is this normal due to the relative low cranking speed of the starter? If so, what's this say for any cold-start mornings using 20w-50? Before anyone asks, yes, I made sure there was no blockage in the feed tube and passages prior to re-assembly.
