s14 bmc question

[Tibz]

Hi everyone

ive got a huge problem
i hope someone can help me out

so ive got an s14a uk spec
abs pump removed
standard rear brakes
on front brembo's calipers
from a rear of a jaguar xjr with custom made brackets
and 324mm gtr discs
i think piston diameters 26mm x 4 each
the brakes are spongy i can hardly stop the car
and i can knock the pedal down
wld the 33 gtr mb57 solve my problem?
wld it work properly with my standard rear brakes?
hope someone can help
Thanks
Tibz

[Tibz]

also do i need the abs or the non abs bmc?

[Def]

You have air in the system (soft pedal), and you don't have enough piston area up front. Ditch the calipers you have, they will not work with a stock Nissan MC.

[Tibz]

Im sure there is no air in the system, as my friend bleeded it in his garage with a vacum machine, and the feeling of the pedal is not like air in the system its not too soft its ok by slight brakings but when i put more pressure on it it starts to feel spongy feels like there is a ball under the pedal
do u think the 33gtr mb57 bmc wld make it work?