This is for a 22R engine...the oil pan is off, the timing cover and timing chain are off. Although I think I have everything set at #1 TDC, I want to be sure I'm not at #3 instead. Could someone layout the most accurate way to be sure.

Especially starting with the numbering of the cylinders. I'm assuming that #1 if the front cylinder, but I haven't found the numbering sequence in any of my manuals. Is it 1-2-3-4 with the #4 the rear most cylinder? Or is there some other esoteric numbering scheme?

And can I tell anything by looking from underneath the crankshaft ...right now the first and third cylinders are up and the other two are down. Should there be an obvious difference between the first and third, ie,how far up each one is?

Let's assume that the crankshaft was turned a number of times without a timing chain, so you don't know where you're at. Where do you go from there?