I installed a new clutch correctly but no amount of bleeding or pressure bleeding fixes the soft pedal which only lets me change gear if the pedal is raised slightly of the floor, I hear grinding and generally get little to none exceleration. Clutch controling the car forward or back slow works fine but in first or whatever gear exceleration jump too high. I hope I'm explaining this right.  Also I'm told by a guy that the slave and master cylinder were bled well and have no air in them. I guess in short I have all the symptoms of a bad clutch even after proper installation of new one

Was the fault exactly the same with the old clutch?

Slipping in gear under acceleration is an odd fault, as that shouldn't have anything to do with the hydraulic system.

Generally caused by worn or contaminated friction plate.

Was the slave cylinder replaced with the clutch plates?  Were there any signs of oil leaking from the crank seal or gearbox input shaft seal?

aren't you meant to fit a new slave cylinder 

 

if the clutch is assembled correctly and the engine and gearbox are 100% mechanically OK - the bit lifting the clutch can be the only fault ?