egCoupe

What master cylinder, brake booster, and prop. valve do I need for my 91 CRX with 91 Integra rear disc conversion?

I have a tiny brake booster and the stock crx prop valve and master cyl.

Do I need to upgrade to Integra parts here?

EDIT: I just searched a little better and found my answer, mods delete if you would like!

roastbeefrichie

iTrader: (1)

if you swapped out your drums for rear discs, i would recommend a non-abs valve prop from any civic, crx, del sol or integra w/ rear disc. honestly, i ran with a drum prop on my rear disc for over a year & it worked fine no complaints

* rule of thumb for the master cylinder is simple...if you have the stock crx front calipers w/ 9.5" front rotors, keep your 13/16" master cylinder or your pedal will be too stiff (you risk destroying your seals and wrecking your calipers). from the factory, the 88-91 crx si & 93-97 del sol si both came with 9.5" front rotors & 13/16" m/c w/ rear disc & disc prop

> the integra master cylinder is for integra, civic ex, 99-00 si front brakes (or bigger...ie, 17cl15vn itr, nsx, etc).

egCoupe

Awesome advice thank you! I guess I'll go with the factory stuff, but I'll swap out to the larger booster.

night

the master cylinder size is about volume. if it is too small it will have to travel farther to push the caliper piston the same distance.
if it is too big the brakes will apply with very little travel and you lose the 'analog' of the pedal.
imagine if your brake were either completely off or completely on as hard as they could stop. that is some of the effect you would get.

now if you ever did some big brake kit, 2 piston caliper upgrade, etc. then yes, a bigger master cylinder.