Took me a while, but i bolted everything on...
Integra 94-00 front and rear discs
40/40 prop valve
RS Master Cylinder
GSR Brake Booster....
All of this on a 92 civic hatch. So I'm thinking this is all good to go. Bled the brakes, went to test them out, and the pedal was going damn near all the way to the floor before i was getting any grip, so i decided to test the master cylinder, and unscrewed it from the brake lines... we were pumping and getting no action... I took the core to Autozone, bought another one (refurbished) we put that one on. Bled the master cylinder, attached the lines, bled the brakes 3 times, and now it grips hard sometimes, then other times it goes almost all the way to the floor. Sometimes if i pump it while i'm driving or coming to a stop it will grip again, it's not safe to drive. What could the problem be?

 

Check your brake pads and make sure all your lines are tight and not leaking, i was having the same problem.

 

check your calipers too

 

had that problem a while back it was just that i didnt bled them enough and after i got a vacuum tool i was able to get it all out

 

master cylinder seal was busted... put another autozone one in, but have to wait for my roomate to get home before i bleed em. I'll keep you guys posted.

 

up... put in the new refurbished MC from autozone. bled the brakes and wow... the stoppint power was incredible. i was amped. then went to take the core back to autozone and the brakes started gripping without me touching the pedal to the point it locked up on me on the train tracks behind my house. i gassed the motor so it would pull me past the tracks... had to get my boy to bring me a wrench. we released the pressure by undoing the lines at the MC. what the hell? what's wrong with my conversion. I've got a DA 40/40 prop valve, rs master cylinder, and a gsr brake booster.