brake pressure

[markss28]

I have a set of c5 brakes on my 73 camaro I have a a 2000 camaro master cylinder I have bled the maaster and all the brake lines I have decent pressure but not enough the brakes will not lock up. It does brake a better then the stock stuff but nothing like expected I know something can be done but what?

Oh chime in anytime Tobin

[Payton King]

brakes?

[markss28]

power, but with the stock brake booster.

[Payton King]

but I bet the stock booster will not work with the new style master. The old masters go in further than the new stuff...so when you hit the brake pedal it is not pushing the master rod far enough.

Get a matching booster. DSE has one that will bolt right up. I am sure others have one as well, but I know they are doing a lot of 2nd gen stuff lately.

[Apogee]

Old master + new booster or visa versa doesn't really make a difference so long as you don't have excessive clearance between the pushrod and the piston. Typically .01"-.03" is considered safe. You just want to be sure that the MC fully releases at rest, otherwise you can create other issues like caliper drag.

As for overall brake torque, I'd suggest two things if you want to increase it; more agressive pads with a higher coefficient of friction and/or a larger booster. An 11" single diaphragm and dual 8" have about the same effective area. A dual 9" like came on the 98-02 F-bodies would be about a 25% increase in area and as such, increase your pressures accordingly for any given amount of pedal force.

As a side note, if you haven't fully bedded-in your pads and rotors then you're not really giving them a chance. We usually run everything through an initial bed-in process to get things settled in but you still won't see peak performance for another couple hundred miles while you put the rotors through some heat cycles.

Tobin
KORE3

[markss28]

As allways Tobin you are pobably right. I will work the brakes to make sure I bed them in right. Ill put on a couple off hundred miles before I make any real changes to the booster or such. Do you recomend going with a ls1 camaro booster, do you think that will help my set up a
bit?

[Apogee]

The 25% additional gain that comes with a dual 9" diaphragm booster is significant and you'll feel it at the pedal. That said, there are a lot of guys running the single 11" or dual 8" boosters with similar setups to yours who are happy with it. A larger booster and/or different pads may tune the brakes more to your liking and expectations. With everything properly set up, you should be able to achieve lockup with a moderately high level of effort. If you're risking a pulled groin, then there's probably something wrong.

Tobin
KORE3