kiri i also bought new brake line, you are correct in saying that i used the old flexible lines, but that is being replaced as well. so hopefully problem will be solved

It will i had the same prob. with a 4door i had, Just to be on the save side get a new kit for the calipers, and take a compressor and blow the pipes kleen from the master, incase something got loged in a steel pipe.

I don't think you wanne do it all again?
best of luck (Not nice work, Brakeflued)

Just an update, installed new flexible brake lines, had to modify a set of different discs since we don't get the stanza discs here anymore and new brake pads. solved the problem, turns out the discs was too thin and when i brake hard, the pistons goes out too far and gets stuck. thanks for all the feedback

just a quick update, redone calipers, new brake pad, new brake pipes, the rubber pieces that connect to the calipers, still no luck. changed the master cylinder again but this time with a 1.3 toyota corolla booster wit the master cylinder and problem solved, don't know if it was the standard brake master that didn't have enough travel for the disc brakes but all's good now.