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Old 12-16-2003, 01:22 AM   #1
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Default RSM Rotors installed, Brake Question

Installed my RSM rotors on Kendras car along with some Raybestos quiet stop brakes. Been a few weeks and is past the time i think they should be broke in but i'm feeling some pulse when braking at high speed. None noticed at low speed however I am noticing that it feels like the brakes are mushy. I did not change the rear pads or rotors but if the front is doing 70 percent of the braking shouldnt I be seeing some decent stoppage? It feels like there is some play in the brake pedal almost like they should be bled but I did not disconnect any lines or lose any fluid.

Should I change the back brakes as well? Should I bleed the system? suggestions?

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Old 12-16-2003, 09:55 PM   #2
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Did you say you were feeling the same "mushiness" before you installed the RSM'*?

BTW, nice rims
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Old 12-16-2003, 10:00 PM   #3
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Mushiness usually means you need to bleed. The pulsing concerns me. Could be a rotor that'* not flat.

How did you break them in?
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Old 12-16-2003, 11:59 PM   #4
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Quote:
Originally Posted by willwren
Mushiness usually means you need to bleed. The pulsing concerns me. Could be a rotor that'* not flat.

How did you break them in?
Used GM'* burnishing guide from the GM Manual, get up to 30mph slowly brake to a stop, repeat 20 times. As for the mushiness its worse now then when we put them on. I did take the top off the master cyl when i compressed the calipers as its states to do so, but i did not lose any fluid so im not sure how air got in it. I'm wondering if the rotor wasnt flat when i got it? Could it have been warped already? Will someplace like midas check them out for warpage even though they are slotted? Can they be turned? so many questions...sigh. when we first put them on i followed the push brakes to the floor hard procedure to "seat" the pads. The brake pedal stuck and wouldnt come back up. After turning the car off and then back on the brake pedal was up and operating normally. Hers is definately mushier (word?) than mine. I get brake pressure right away where hers goes about half way before braking occurs. It really seems like air in the lines but I'm just not sure how it got there...I am going to try and bleed them on Friday to see if that helps, but the pulsing still concerns me.
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