HELP!! Please

here's what i am trying to do. I took off the Disk breaks off one of my Honda Crx's Si and put it on my Honda Crx Dx as long as i do not turn the car on i have some what of a break pedal but when I turn the car on i have no breaks i bled the breaks i am wanting to know if i also need to change the Master Cylinder. I am wondering if the Master cylinder is differnt from an Si to a Dx if you look at them side by side they look simular but I am not sure. Does anyone know?

 

do a search you will find alot of brake threads.

you dont need the si master cylinder. although the mc's are interchangable

one thing that happens sometimes when bleeding the brakes, is the seal in the booster gets ripped because the brake pedal was pushed too far (to the floor).

were the brakes in the dx fine before this?

 

Yes and no I also changed the Break pads on the Disk brakes I thought all i had was some air but when i Mash the breaks you can see and try and make the wheel turn it wont but still no breaks. i wanted Disk breaks on it to help make it stop better. Been thinking about also putting it on my 1991 Crx Automatic but with this much trouble i think maybe not. Dont have much of a break witrh it either. Is there a way to get a power break bleeder? I also thought i might have to change the master cylinder i done changed everything else but that. Break lines roters everything The master Cylinder is the only thing left That i have not changed any suggestions?