Just installed the akebono bbk on my Z and I must say I am quite impresssed with them, however today when I first drove it it had a vibration when I applied the brakes. It shook the whole car a bit, like the pedal was going in and out a bit, almost like the rotor was warped? Any ideas? I blead the brakes right, both sides of the calpiers.

 

General rule of thumb is you bleed all 4 calipers... Start with the caliper farthest away from the master cylinder. I would recheck if everything is tightened correctly. Sounds to me like you need to bleed them correctly.

 

Yea I definitely blead all 4 calipers. They have a bleed screw on both the front and back of the caliper.

 

Did you bed thoroughly?

 

Took a while to completely bleed mine. Each time I thought I was done, I got bubbles when I tapped the calipers a bit. It won't hurt to try bleeding again

 

did you make sure everything was "set" in place while bolting it back up?

 

they are ceramic pads, no need to...however I did do some hard braking from 70-10 a few times.

 

yeah, I will go around again and make sure there is no more air, its just a weird feeling the pedal moving up and down.

 

what do you mean?

 

i mean was everything (rotor, caliper brackets and such) was "set" in place with no play, even though you tightened it down?

 

I've never heard of a setup that didn't require bedding.

were they new when you installed? rotors and all?

i'd do that too..

 

Keep in mind I have a set of Akebono's... I've never heard of the pedel going up and down and it be a warped rotor. The shaking and the fact that your having the weird pedel pulsation makes me think that their's still air in the lines or something is loose.

 

Yea, I'm thinking there is some air I didn't get out..I'll try bleeding them a few more times. As far as the fit, everything was tight and was torqued to 115 ft lbs I'n the front and 70 I'n the rear. The pulsation I'n the pedal is what puzzles me.

 

Sounds more like an ABS engagement then air in the line. Air will just make the pedal hit the floor, no bouncing up an down. However when the ABS kicks in it can pulse the pedal.

When you changed over to the new calipers, did you let the brake line hang for a while?

 

yea I took off the old brake system and let the fluid in the line drain out, there was still quite a bit of fluid in all the lines when I re blead them with the super blue. Its just an odd feeling, even if you barely touch the brake I can feel the pedal pulse. Maybe I just have a pad in wrong, dont see how but I'll double check.

 

could of sworn it said no break in on the box, however I did break them in a bit anyway. Everything was brand new from CZP.

 

huh... interesting. hope the re-bleed solves your conundrum.

 

Your rotors may not be seated on the hub properly. Or the rotors may have been dropped and warped.

 

I bet letting the fluid drain out is at least part of the problem (if not all). It becomes more difficult to completely get the system air-free. The instructions that come with the CZP kit tells you to plug the lines with one of the bleeder cups once you disconnect the line. Maybe one or two drips within the few seconds between disconnect and connect. I am not saying you are stuck. Or I am saying is, you will have to bleed the system longer than you probably did.
I have had the CZP kit as well for some months now and so far so good.
I used the Motive Power bleeder. It made the job easier

 

+1 on the Motive bleeder... I didn't let the whole system go dry either.