board917

I just got an 06 zx6rr from a guy who neglected to tell me he ran it into a curb. He said the brakes were getting soft at times so he put ZX14 calipers on it along with SS lines. When i test rode it, i noticed the front brakes pulsed VERY bad. I assumed he had probably over headed the rotors and warped them. I get the bike home and put the front end on the jack to check the rotors and notice a dent in the lip of the rim. Took the calipers off and spun the wheel which was out of true. I have since put new pads on, resurfaced the rotors, cleaned the rivets and put a straight wheel on. The rotors do not seem bent to me maybe 2mm of runout total on the right one and 1mm on the left. I still have massive pulsing in the brakes, it so bad that once i come down below 20MPH i have to get off the front brake to avoid loosing it. what else could be causing this? o the axle is straight too.

Sev

1mm is fucking huge!
Runout is measured in hundredths of an inch. Like imperceptible to the eye.

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Of course I'm generalizing from a single example here, but everyone does that. At least I do.

TimmaethBoy

If you're brakes are pulsing when you are applying the front brakes, your front rotors are warped. End of story. They need to be replaced as well.

I seriously doubt you can resurface these rotors since they are way too thin to take anything off.