I am working on doing an opti swap and removed the pulley from the hub that is bolted to the crankshaft. The hub is still bolted to the crankshaft.

I have an underdrive pulley that is pressed in to the original factory pulley.

Each pulley has 2 arrows and they are pointing at each other. I did not mark the location when I removed the pulley. Is this going to cause a problem?

On the actual hub there is a lip/ear/bump between one of the points on the hub that the pulley bolts too. Are the arrows on the pulley supposed to align with the bump on the crankshaft hub or does it not matter how it goes back on?

 

Won't be a problem, the pulley/dampner will only go back on one way.

 

.... because the three "arms" on the hub are not equally spaced.