Thread: BABK completed but locking the rear

Hello guys,
So i have finished the braking part of my project and now the car is locking the rear very easy.
Here is my setup:
-Front Wilwood Dynalite Calipers with 11" rotors and hawk pads(came with the kit).
-Rear Maxima 99 Calipers with 11" maxima rotors and stock brake pads.
-SS brake lines.
-Altima U13 MC.
-ATE Blue Racing Brake Fluid.

Now, i need to know if someone have had this issue and how to resolve this, i think a more agresive brake pad on the front will help, but i also read that a more agresive brake pad in the rear can help too.

Any Help?

Thanks,

Are you sure those Maxima rear rotors are 11"? Shouldn't they be around 9"?

That might be your problem right there.

They are 278mm, almost 11", i think is more like 10.9" but they are still huge!

Well, there's your problem? You put the wrong brakes on. (Although you must be running 19" wheels because they don't look very big in that picture.)

If you don't want to put the correct Maxima brakes on, then maybe look into an adjustable proportioning valve.

Haha, i know i put the right maxima brakes, because that is the ones that bolt on without mods on the B14s but i think i will be putting the proportioning valve from wilwood to fix this. Im running 17" rims right now, but dont know why they dont look that big on the picture.

Try switching back to soft lines in the rear?

Boy, I am out of the loop when it comes to B14 rear brake stuff. Why aren't the B14 guys using the 258mm rear rotors like the B13 guys? Why on Earth do we think that a 278mm rear rotor would be balanced with a ~279mm front rotor on a FWD car and stock style proportioning?
That is Porsche 911 rotor sizing technique...
But then again, the JDM NX2000 apparently runs 257mm rotors up front and 258mm rotors in the rear. They must have some seriously lopsided proportioning going on for that setup...
And maybe the hatch glass changes the weight distribution a tiny bit?

This can be fixed. I'm looking at "THE" Brake Thread and wondering why it doesn't mention an even more extremely proportioned MC than the Altima MC, or an adjustable proportion valve as mandatory...

Do the brakes drag under normal driving, or is it just that they lock up sooner than the fronts?

Under normaly driving they work good, but if you brake hard, like trying to see which locks first, the rear lock first, i think that the front brake pad im using is bad because, when i upgraded from AD22 to wilwood, the car did not brake as good as it did with the AD22...

I have read "THE" Brake Thread a lot of times and it does not says anything about having problems with the rear brakes... i think that it is because most of the guys that use this setup use the AD22 on front... Im trying to play with the brake pads first...
Regards,

I have the same setup except I use the 258mm rotor for the rear brakes. I have no issues with the rears locking up.