I replaced my clutch everything went good, next day my clutch pedal just sticks to the ground I replace the master and slave worked fine fast forward about a month my clutch pedal begins doing the same thing but its only on a long drive it'll come up halfway and I have to pull it up with my toe I had to drive it like this on the way home the next day I turn the car on and it comes up normally until I drive it a distance just suddenly stops working when im at a stop and the car is still. I don't know if this has anything to do with it but if I turn the A/C on and I'm just sitting there for a bit and drive off it instantly makes the pedal come halfway up.

 

Boiling clutch fluid. This happened to my on a dyno.

 

bleed/change the clutch fluid.
and check for a way to insulate it from the heat .
guessing you have aftermarket exhaust parts. or aftermarket clutch line.
or something routed incorrectly.

 

Did you replace the clutch hose as well? Stainless steel with some type of heat shield is strongly recommended for the Z.

 

Mine was getting stuck half way down after a clutch, slave, and SS line (I insulated it) change even with DOT 4 fluid. It turns out that the clutch pedal just needed to be adjusted. You can read how here: http://www.jimwolftechnology.com/wol...TSPECSHEET.pdf

After I adjusted it I've had zero issues. Hopefully it works for you as well.

 

This. Don't spend money when you don't have to. Make sure your pedal is adjusted so that it's getting it's full throw.