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Alright, so since I replaced my brakes (and a little before) I've had problems keeping my front rotors from warping. Like 5-7k miles and they're significantly warped. I replaced pads/rotors about 2k ago, and now my front have black spots. I'm assuming this is a heat distribution issue, so I lifted it up and tried to spin the front wheels, and I have to crank on em pretty hard. This leads me to believe the pistons in my front calipers are sticking.. pics below.
Wow. Your rotors are toasted. Typical of crappy OE rotors which have been run hard.
I bet if you measure them, they'll not be warped.
Those black spots are either cementite deposits ("hard spots") or brake pad material which has transfered to the metal of the rotor. Either way, as the rotor turns and those areas sweep under the pads, the friction coefficient changes.
That rapid change in friction generates a rapid change in braking...a rapid fluctuation in the rate of deceleration.
The rotors are ~2k miles old... I don't drive THAT hard either. 9/10 of my miles are highway/interstate. And the spots are the same feel and such as the rest of the rotor, but I can feel what you're talking about in the pedal. But none of the answers why the front wheels are under so much strain even just sitting there.
I don't even know what that is... so most likely never.
Pad Abutment Bracket - what is bolted to the spindle. The caliper slides on two guide pins into the bracket. They need to be greased or the caliper DOES NOT slide in and out as it should. The PAB has little rubber boots to keep the grease in and clean.
I am happy to announce that I have sold the site to Robert (FirebirdGT). Years ago this site went down when TealV6 had it, I bought it, refreshed it,...
Went ahead and moved my starter wire from the back, to the front again since it had no effect on my drain on the battery. Also made me nervous driving...
Building the Tom Henry RS Part 4: Suspension Mods, Tires, Wheels, Headers and other Cool Stuff. By: Hib Halverson
At the end of Part Three, we changed the valvetrain of the 3.8-liter V6 in the Tom Henry RS. We installed new, Yella Terra "Ultralite" 1.8:1, aluminum roller rocker arms, Katech valve springs and Katech titanium retainers on our 3800 Series II V6. Ultralites are nearly 25% lighter than the stock 1.6 rockers and 8% lighter than the SLP aluminum...
02-07-2020, 10:30 PM
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