Question? --brake master cylinder bore

[Run-em]

Does the larger bore on a brake master cylinder create more foot pressure feel at the pedal or make it easier?

[chevynut]

Does the larger bore on a brake master cylinder create more foot pressure feel at the pedal or make it easier?

Larger mc bore creates less line pressure for a given amount of pedal force.

[Maddog]

The"feel" is firmer with less pedal travel as the master bore size increases.

[Rick_L]

To me, I don't think it's firmer. It just has less travel than a smaller bore m/c. But that's a matter of choosing the words to describe it.

Thing is, most modern cars use a combination with little travel, and most seem to like the combination of a lot of boost and short travel.

So...what they do is provide a lot of boost and then use a big bore m/c (which kills some of the boost) so that the pedal travel is short.

[charliea]

smaller bore stops better bigger bore needs more pedal pressure to stop fast at least on my wildwood 4 puck set up 1"mcyl was very hard to stop 7/8 cured it