Sean73 Posted April 16, 2007 Share Posted April 16, 2007 I'm running the JSK rotor hat, 12.2" x 1.25" rotors, and older Wilwood Superlite 2 (1.25" 4-piston), and Wilwood BP-10 pads. When I installed everything, clearances of the brand new pads and rotors were tight. I got it all together, bled, and have gone through the brake in-procedure a few times already. After several applications of the brakes, I feel the right front brakes start to pull a bit. Slowing down to 5 mph, the right front starts to pull hard, and make a horribly loud, low pitched vibration. If I speed up and let the brakes cool down, it goes away. I am thinking it's one of two things: 1) The tight clearances of the pads and rotors are causing them to rub excessively when the pad/rotor heat up. 2) The right front caliper is sticking (but only when the brakes are warm). I've tried 2-3 heat cycles and get the same result every time. Any ideas? Quote Link to comment Share on other sites More sharing options...
GrommitZ Posted April 16, 2007 Share Posted April 16, 2007 Your brake master cylinder may be improperly adjusted, preventing brake fluid from coming back into the reservoir when the brake system heats up. Also check your wheel bearing for tightness. A loose bearing will cause rub and should be fixed immediately. Quote Link to comment Share on other sites More sharing options...
jt1 Posted April 16, 2007 Share Posted April 16, 2007 Look at the RF rotor carefully and see if the transfer film is even, or if it is splotchy. You may have to clean the rotors and rebed the pads. jt Quote Link to comment Share on other sites More sharing options...
Sean73 Posted April 16, 2007 Author Share Posted April 16, 2007 The transfer film is even and looks the same on both rotors. Wheel bearings are fine, torqued the nut per FSM. I've cleaned up the rotors with a couple times with the same outcome. I would assume the MC is in good shape, since I used it for my previous brake setup with no problems. Quote Link to comment Share on other sites More sharing options...
Zmanco Posted April 16, 2007 Share Posted April 16, 2007 You might try going out and getting some heat in the brakes, and then quickly pulling the wheel while it's still hot to look for interference and/or something rubbing etc. Quote Link to comment Share on other sites More sharing options...
jt1 Posted April 17, 2007 Share Posted April 17, 2007 Hmmmm. In no particular order: 1. Check to see that the caliper is parallell to the rotor. Easiest way is dial calipers between the caliper body and the rotor. 2. Check the rotor runout. 3. Rotate the pads and see what happens. 4. Change the o rings in the calipers, while looking carefully for any sign of a stuck or binding piston. 5. If you have rubber brake lines, throw them away and put stainless on. 6. If the pads are so tight you have to beat them with something to get them in, take a sander or grinder and thin them down enough they will drop in with hand pressure. 7. Make sure the pads aren't binding in the caliper body. John Quote Link to comment Share on other sites More sharing options...
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