non-VTEC

has anyone noticed any difference in changing their master cylinder from the 15/16" to 1"?

is there any noticeable pedal travel improvement? is it worth the upgrade?

i currently have front and rear ITR brake calipers in my integra with a stock size 15/16" master cylinder. the brakes feel pretty good but im wonder if i can improve brake pedal feel with a larger master cylinder bore (more brake force applied vs. surface area of caliper pistons?)

anyone have an input on this?

Drive 4 fun

I did that change with an aftermarket MC thet came 1" instead of 15/16 and fit the same booster. I did not feel much difference. You are talking moving the volume of a cylinder of brake fluid of 1" vs 15/16." That is about 6% larger diameter, and radius. Volume of a cylinder is proportional to (radius) squared. The increased volume of fluid moved for the same pedal travel is about 12%. All of that assumes that I can remember and do math correctly. Mostly it means less pedal travel. The brake booster contributes to much of the feel or force.

non-VTEC

i can get a new 1" MC for a decent price...if it will give me a slightly less pedal travel it might be worth the effort.

the 6% larger diameter maybe be enough to compensate for the larger caliper pistons at each wheel...even though the pedal seems fine now it should improve more with the larger MC piston....

Drive 4 fun

I got the 1" for the same price as 15/16 and upgraded. The change was not dramatic, but no reason not to upgrade if you need a new MC. I would not spend the money if my 15/16 MC was good.

non-VTEC

sounds good.....i think i will save my money then....thanks.....