I have a 91 crx HF and i changed the WHOLE breaking assembly today with the upper and lower control arms. After I was done, I went to go try the new breaks, and they would break the same. I have the rear disk breaks also but it is slow on breaking compared to my cousins EG. Do I have to change the master cylinder to give it more pressure or what? any help would be appreciated. thanx

 

you need the proportioning valve, master cylinder, and brake booster.

 

When I did my rear disc I used a proportioning (can't spell) and master cylinder off a si rex and the system works perfect although I regret doing the conversion due to weight

 

i have a 91 Hf also and the stock booster and MC are way too small with an upgraded brake system.

You can use the 15/16's da booster and mc. Lines match up perfectly!

I personally ran a 1" GSR booster and mc . Because its ABS you would need the bigger 12mm fitting.

Also change the prop valve to a 40/40 if you have a rear disc swap!