brake bleeding issue

[Bluemonster71RT]

I had to change my rear calipers after fear of piston damage when the 2 of the bolts came out. After putting the 2 new calipers on I cannot get a stiff pedal like I had before. I bled them twice by mighty vac and once by 2 person method. Every time, I was able to acheive no air bubbles. But the pedal still goes to the floor at first then is just way too mushy. What can I be missing? Everything was great prior to the swap. Could these new calipers be junk? Everything has less than 1000 miles on it. 4 wheel manual disc

On a side note SSBC may have a good kit but customer service SUCKS. Clearly did not want to help with parts and what little info that was given on the parts to me was wrong.     

[roadman5312]

        If your master cylinder went dry during the swap you may need to bench bleed it.              

[Bluemonster71RT]

        If your master cylinder went dry during the swap you may need to bench bleed it.              

It did not. Is there any other way air could get to the master and cause an issue with just swapping calipers?  I'm not leaking anywhere so I assume that it has to be air.

[Chryco Psycho]

was there any visable damage to the first set of calipers  ?  Generally I would say the part you changed has to be the problem  , no leakage where the lines attach to the new calipers , do you still ave the calipers you removed ? you could re-install them

[Bluemonster71RT]

was there any visable damage to the first set of calipers  ?  Generally I would say the part you changed has to be the problem  , no leakage where the lines attach to the new calipers , do you still ave the calipers you removed ? you could re-install them

Right, so what I did was pulled the right rear caliper off and was going to try the "turn it upside down" bleed tactic. When I put the piston compressor to use the piston would not go back in. So in short I took the good parts out of the left rear and rebuilt my damaged right rear. Re-installed them and blam-o we are good to go. Something was drastically wrong with the "new" one. Man that just drove me nuts.   

[Chryco Psycho]

generally when a parts is changed & a problem shows up it is the part that was changed ,not always though , glad you found the issue