the push rod is the one from the booster and it should be a screw type.
I'm going to try and check the push rod and make sure it's spaced correctly. I was also reading online in other forums that, if the push rod is too short, I may need to change it to a longer rod.
If anyone on JNC knows before hand if in fact I can change that rod prior to a possible attempt that would be appreciated.
what i do is have some one pump the brakes till they get as hard as possible then i go to the front and and stick a pry bar or anything by that matter and bush the pad inward as to push the piston in (note at the time of pushing in piston person no longer holding or pumping peddle) do it to both sides.. once both pistons are all the way in have the helper pump the brakes till they get hard and then you start the normal bleeding process for that brakes.. (also bleed the rears as well) hop it helps..... also you sure the 280zx m.b. cylinder worked?
Regarding the brake master cylinder, I was told by the person that I bought the disc brake conversion brackets from that I could use an early 280zx b.m.c with the conversion. So that's what I have now. I never tried the conversion with the stock b.m.c because I changed all the old parts when I started the conversion.
Someone told me that their experience with b.m.cs' is that the bigger they went, the softer the pedal got. In an older thread, I read a post from DatsunFreak that said the opposite. Both sources of information are highly credible, so I don't know what to make of it other than they are both correct!
I'm going to try the bleeding process you mentioned, sounds like it will get rid of any trapped air within the pistons.
I live in Mililani. You're more then welcome to see my truck, it isn't much to look at right now. Do you drive you Z around town?