Originally Posted by MrFatbooty
I take it you're trying to figure out which master cylinder to use with a four wheel disc conversion on a Civic?
The '94-'01 Integras with ABS used a 1" master cylinder, the non-ABS versions use a 15/16" one. All '90-'93 Integras used a 1" master cylinder but there were different versions for ABS and non-ABS cars.
You should use whichever version matches the brake setup you have.
One other thing: if you have the 9.5" front discs that every Civic aside from the EX came with, you want to use a master cylinder from a '92-'95 Civic Si hatch.
Ok thanks for the reply. I just wanted to verify that I was correct. I bought a MC from someone that said it was supposedly from a RS. However he sent me a 1" MC. The RS doesnt come with ABS so I shouldve gotten the 15/16 one. Im gonna install integra brakes all around. I know that the RS will bolt onto my car (93 civic) with no reflaring.