When I do an all wheel disk brake conversion on my hatch do I need the crx si brake master cylinder?

 

no. you might want to snag the proportioning valve from a donor EF with rear disks or a DA integra, but it's optional.

 

thanks man oh and i'm not sure exactly but I understand that only the 90-91 ef sedans have rear disk brakes. Am I right?

 

nope...90-91 Si's as well..

 

oh yeah I'm sorry I knew that what I meant was that the dx and hf hatches and crxs didn't have them, my bad.

 

yea..thd dx and HF didn't get rear discs..

 

Thought it was only 91' CRX Si's

 

nope..i'm pretty sure the 90-91's has disc breaks...cuz i've had 3 90 Si's and all of them had rear discs

 

only 90-91 CRX Si had rear disc brakes. civic Si's did not. even 90-91 civic 4dr sedans had rear drums. although that sedan had bigger front brakes than the crx and thus a bigger MC.

what brakes parts are you changing?