hey guys, i have a 91 crx HF and i bought a pair of 91 crx si rear disc, my question is what can i upgrade the master cylinder and proportioning valve to to make the brakes work better for the car? is the DA integra a direct bolt over?

 

The DA master cylinder will only work with the DA brake booster as well. I recommend the 90-91 Civic EX master cylinder as it will bolt right up to your stock booster. It is 15/16" and can be bought at auto zone for like 55$ with lifetime warranty.

I am not sure how the 4040 prop valve will work with hf front/si rear brakes. But yes it will swap over.

 

oh so the ef sedan will work? thx man im gonna look into the proportioning valve

 

EX... It's the only one with the 15/16 MC. If you use a DA MC you'll have to change to a DA booster.

 

which one works better? DA or EX sedan?