Master cylinder and pump

[Lowndex]

I have an 04 Marauder with high performance Wilwood b rake kits (front and rear) from Todd @ TCE Performance. I love 'em, baby. ANyway, now I welcome advice on which master cylinder and pump I should install. Stick with Wilwood? Something else?

Has anyone changed their master cylinder and/or pump? Did it affect the ABS?

Thanks,
LOWNDEX:beer:

[merc]

Why would you want to change your master cylinder? Did Todd recommend this upgrade ?

[RoyLPita]

You don't need to change those because there are no upgrades.

[Dragcity]

Don't they make one that has an adjustable proportioning valve? I always feel the rears need a little more.

[burt ragio]

Dragcit, can't you just add porportion valve in line just below the master cylender ?

[Zack]

Dragcit, can't you just add porportion valve in line just below the master cylender ?

Yes you can!

[Todd TCE]

We talked this over on the phone.

Changing the mc will not change the braking effect. Only change the fluid values for pressure or volume equally to both ends. You cannot change a single bore part and make for more braking.

A larger bore will decrease pressure where a smaller bore will increase pressure. Larger will be firmer in feel with shorter throw, smaller longer in stroke and softer.

Total tq however will be the same regardless of how you get there. Using the bias calculator http://www.tceperformanceproducts.com/brake_bias_calculator.html
put in a value of 90lbs of leg and call it "SKID" or the point of lock up.

By changing the mc bore size you'll see the rotor tq value change also- now just increase or decrease the leg input to reach the original value above. Going from the default 1.00" to 1.125 and down to .875 will make a huge change in the rotor tq value. Neither of which will make it stop better, faster or shorter.

Adding a prop valve is a cool idea. But all they do is limit rear line pressure. They will not INCREASE pressure. To max the effect of this you might consider a higher Cf pad in the rear thus "adding rear brake" effect to the car. Then de tune it to your liking with the valve.

If you really want max braking you need to look for the most sticky tire you can run.

[Tom Doan]

Todd just set me up with different pads to adjust the bias front to rear and I can feel the rears really working, feels great, wish I did the rear Wilwoods sooner.