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SRX180

Need some help, spongy pedal after brake upgrade.

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hi everyone. the story goes like this

ive got a 1997 type x with a standard brake setup (4 stud, abs, BM44...ect)

ive bought r32gtr front calipers and rotor and also the master (bm50) off of a mate that took it out of his 32gtr and everything was working fine.

ive done the upgrade using gkteck braided lines and ebay special billet hubs. put everything together bled it 3 times and the pedal is rock hard.

but when i start the car and the booster kicks in it spongy as f@$k. so i bled it another 2 times with the car running and it seems to have got a little better but still very soft only with the car running... any ideas?

Thanks.

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are the calipers on the correct side? as inthe bleeders pointing up. and did you bleed the rear brakes as well?

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Did you bleed the master cyclinder first?

Did you bleed the brakes in the correct order, the one the greatest distance from the master cyclinder first and working your way back?

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