At that you have 3.3 turns lock to lock in the retract direction, extending you would have 39.28 cu. in. volume for 5.17 turns. At the moment I think I will be using the double ended 2.5 bore x 1.5 shaft x 8" stroke cylinder. I figure with using the double ended cylinder I will completely avoid the problem you were having with the tie rod twisting and it doesn't cost much more anyway.