Bleeding Cluth Lines

I just replaced my slave cyclinder(( 94 3000gtSL)) about 2 weeks ago and fianlly found the time to bleed my lines, Two days in a row my brother and I sat there for a good 2- 2 1/2 hrs Bleeding the system and my cluth has barely improved to brinmg it self off the floor, So about2-5 hrs total , Wondering how long it takes to Bleed the clutch line manually, I know Not a distant 5hrs and still nothing, also My one friend has a miti-van And I was also wondering The preasure i'd have to set it to to purge the my lines of all air.. Any Helpful hints and tips would be much appreciated, thanks for reading