before we proceed, did you prime the engine with oil?
now is the time, stick a 5/16 or 8mm socket down that hole and turn the oil pump with a drill.
you will feel the resistance as the pump gets up to pressure. keep going for about a minute.
if the valve covers are off you will eventually see oil spill out of the rocker arms.
also, on a new engine soak/coat the gear on the bottom of the sync unit with either break in lube or regular oil.
pour some oil down the hole onto the cam gear. put a few drops on the top bushing.
now, about that sync unit.
point it at the bolt hole for the hold-down washer, then adjust it so it's still pointing at the bolt hole.
it makes no difference if the motor is new or previously used, timing is timing. it's all the same.
# 1 piston at top dead center at the end of the compression stroke.
line the tab on the shaft of the sync unit up with the bolt hole and drop it in. because the teeth are angled the tab will rotate.
note how far it rotates, lift it back out and rotate enough so it lines up when you put it back in.
turn the housing so the window is centered at the tab.
to the computer the critical part is the tab must be centered in the window at TDC because thats what locates the sensor.
the computer doesn't care in the least which way the window is pointed, it only insists there be a tab centered in that window when the piston is at TDC.
the window pointed at the bolt hole simply lines things up better with the harness and other things that get in the way.