this is the pump i used
http://www.pscmotorsports.com/sp1405...can-p-274.html
now that i think about it i think lock to lock was less than 4
this is what i have:
bore 2.5"
shaft dia. 1.5"
length 8"
volume 25.12 -- piston area x stroke
steering force retract 4710
steering force extend 7359
pump pressure 1500
volume of cylinder/ cu in of orbital = turns lock to lock
25.12/7.6 = 3.305