Master Cylinder Size

inertia said
That's where the problem lies.
A person tries one product and says it's great, couldn't ask for better, - how do you know ?
Unless you have tried misc "widgets" and tried them on the same vehicle, numerous times, how do you know which is best, when you have tried only one.
At that point, you're opinion is worthless. No offense, lotta folks do it.
Lotta folks, including myself, build custom brake systems for race cars, rally cars, dragsters, all having different requirements.
When you've studied, experimented, and practiced enuff, -. Then your opinion can be considered .

jmo

And in this particular case it's even more based on personal preference. The brakes will work fine with a 7/8", or 15/16", or 1-1/32" master cylinder and anything in between. The performance difference in that range will be fairly small with regard to real world function, so whether or not someone likes one vs. the other is really just the preference of the driver.

Like I said, I have run several sizes between 15/16" and 1-1/32" on the same car. Personally I prefer the 15/16", and that's what I recommend and there are a decent number of people that agree. But if someone wants to use a 1-1/32" master cylinder they're not wrong. I don't like the feel that gives the brakes, but, the brakes still work safely. You can be a brake design engineer for all I care, if you recommend to me an 1-1/32" master with my set up I'm still going to respectfully disagree and run the 15/16". And that's fine because the brakes work fine with both of those options. You can calculate the differences if you want but for the real world the function isn't going to be substantially different, and may also vary on the driver because of the changes in pedal effort.