[ItBites]

In the interest of maintaining reasonable pedal force, I use 5/8 bore MCs. Yes the pedal travel is more than I'd prefer, but when I get on the pedal, at least enough pressure is generated to stop the car.

My pedal ratio is about 4:1, so I am disadvantaged in that way.

For 75 lb of pedal force (75 lb is more than you'd think) at a 4:1 ratio, with the balance bar set for 60% front and 40% rear, and using a 5/8 bore in both MCs, I produce about 586 psi front and 391 rear. I'd rather be doing about 750 psi, but for that I have to push harder than 75 lbs.

Just remember, larger bores require higher pedal force to produce the same braking action...