swap help

[D1SR240]

i just put in a 96 KA in my 91 240 but it won't start. i think its the timing, because theres a spark and there's fuel. before i put the distributor in i set the first cylinder to tdc and the distributor to where the spinning thing is pointed to one and then i put the distributor in, is it possible that i have it at the wrong stroke? since its 4 stroke.

also on the intake pipe (the stock black one) there are 3 holes (not including the throttle body and mafs hole) there are two that are side by side next to the fan guard, i think these are for crankcase ventallation, anyways on that edge of teh pipe there is a hole in the bottom, but i have no idea what goes there, i dont' have any extra hoses or anything for it. do i just leave it open?

thnx in advance

~swave