warren
07-16-2008, 08:21 PM
Note:
Over the last 2 years I have had 3 sets of performance brakes & rotors beyond the orig. ford ones for the front- Steering wheel just kept shaking.
Here is what I found ---
1st. set --- Rotors developed hot spots Blamed the mfg.--- Now I think the installer forgot to check the run out with a dial indicator---some installers just eyeball the rotor by just spinning it and you can't- must use the Dial Indicator to .003 runout at most ( runout is how much rotor moves side to side when turned while on car).
Got another set for the front and they went out as well -- It was metal pieces from edge of rotor getting cought in pads.
Got another set (this is the current set) --- Just had them checked by
brand new LessSchwabb center and low and behold --- the runout was
perfect >001, >002, .003, .002.
Pads looked great but one was worn more on one end- Rotors looked ok
(they are slotted with blind drilled holes)
I kept on thinking it was the mfg. It was not. But-- I did not watch the last 3 installations and now as the tech. pulled off the caliper it was evident that one piston was slower than the other on pass. side--- this was making the vibration problem and poor braking.
85K miles on the MM
Ordered New performance brakes and stainless steel braded brake lines.
The rotors will be turned on their on the car wheel lathe, slow cut, and ruffed up after for proper bedding.
Sooo CK your calipers!!!
Warren
Over the last 2 years I have had 3 sets of performance brakes & rotors beyond the orig. ford ones for the front- Steering wheel just kept shaking.
Here is what I found ---
1st. set --- Rotors developed hot spots Blamed the mfg.--- Now I think the installer forgot to check the run out with a dial indicator---some installers just eyeball the rotor by just spinning it and you can't- must use the Dial Indicator to .003 runout at most ( runout is how much rotor moves side to side when turned while on car).
Got another set for the front and they went out as well -- It was metal pieces from edge of rotor getting cought in pads.
Got another set (this is the current set) --- Just had them checked by
brand new LessSchwabb center and low and behold --- the runout was
perfect >001, >002, .003, .002.
Pads looked great but one was worn more on one end- Rotors looked ok
(they are slotted with blind drilled holes)
I kept on thinking it was the mfg. It was not. But-- I did not watch the last 3 installations and now as the tech. pulled off the caliper it was evident that one piston was slower than the other on pass. side--- this was making the vibration problem and poor braking.
85K miles on the MM
Ordered New performance brakes and stainless steel braded brake lines.
The rotors will be turned on their on the car wheel lathe, slow cut, and ruffed up after for proper bedding.
Sooo CK your calipers!!!
Warren