2:1 is the OVERALL COMBINED RATIO from the crankshaft to the cam drive gear!!!! I know its confusing as hell. I'll try to explain:
Crankshaft pulley to drive gear pulley ratio is 1.55:1 and the ratio to the camshaft idler gear (which is connected to the camshaft pulley on the outside of the valve cover) to the camshaft drive gear is 1.33:1(This is how it can take up to 9 rotations for the camshaft pulley to spring in the right position, 3 rotations to get to a whole number multiplied by the 3 cylinders on that half of the engine.). Mathematically this "works out" (using quotes in the video, not my quotes) to be an overall ratio of 2:1.Im no mathematician but multiplying those two ratios I get 2.0615:1... Like I said, Somehow it "works out"!! Go to this link: http://vehicross.info/modules.php?na...warticle&id=37 read the info again and watch the video: http://www.vehicross.info/misc/timing_belt/timing2.wmv less than a minute in the video it explains this...
I think you have everything good to go, I think you just need to button things up and turn the key on this...