nwhit2004

While driving home yesterday my breaks started to feel funny. I am thinking that the master cylinder is starting to go bad. I was wondering if there are any upgrades that I can do when I put a new one in or when I rebuild this one? I have not done any axle upgrades yet but I plan on putting 31 or 32 tires in the near future.

93XJLI

Brakes feel funny so you wanna upgrade the MC? Explain funny.

nwhit2004

When I press the break about 1/4 of the way down there is good pressure. If I press further it feels like the pedal was on a small lip and continues down . When this happens the is a slight loss of pressure on the pedal. The pressure will build up more the further I push the pedal down. It dose not feel like soft breaks from air in the lines.

Willys55

how about a pin hole in one of the brake lines

holycaveman

First thing check for leaks. Many times if the master cylinder is bad it will leak where it bolts to the booster.

Check for leaks out the bottom of the drums in the rear. Could be a rear wheel cylinder.

If your rear brakes are shot it will cause your pedal to "feel funny" Good rear brakes are the key to having good front brakes. Its a proportion system but it takes everything working properly to be complete.

IF their are no leaks, rear brakes are good and adjusted properly(making sure your adjusters are not frozen) and you still have funny brakes.

REplace the master cylinder.

nwhit2004

Thank you all for the trouble shooting ideas and helping me look at others parts of the breaking system. I would really appreciate if someone could answer the question of if there are and upgrades I can do at the master cylinder when I replace it. Use one from a different Jeep or something like that.

holycaveman

Lipstick on a pig.

Rotors and drums are too small .

Sorry about not directly answering your question.

nwhit2004

Caveman,
Thank for the info. that's what I was thinking but I figured I would ask anyway.

93XJLI

pretty much. if you put a bigger master in with stock hardware, all youll end up with a stiff pedal and no brakes.

OleBlue

agreed, not alot you can do without upgrading some major components.

nwhit2004

That's what I figured but it never hurts to ask. Thank you all for your answers to my question.