Wilwood issue...Lee?

[diegom6]

My wilwoods super light calipers always "chirp" or does a sound when I push the brake pedal even witht eh engine shuted down. it sound like old metalic door rusted opening slowly...

I took the pads out, pulled a bit the pistons and oiled them with some brake fluid, the sound went away until few days later that came back.

I'm wondering what it's causing this and also if would be a good idea to grease it with some copper grease high temp, that are used for exhaust bolts and what not.

Thanks,

-Diego

[Massive Lee]

Hi Diego
You run Superlite, right?

I personally never had creaking on chirping sound on my own Superlite or SL6R calipers. Nonetheless, a friend of mine experienced something strange similar to your "problem", and we solved it.

With car standing still and a wheel removed, I had him press the brake pedal. And the chirping would occure. As he had the original version of the kit (from 5 years ago) with aluminum brackets, I though perhaps the thread were getting loose. Checked out the brackets, the bolts. Everything was fine. With the caliper in my hand and an old rotor between the pads, I had him press the brakes again. To realize the chirping was still present. After looking closely, I applied some compressed air onto the stainless SRS bridge plates and the sound disappeared. We found that after several years, some dust (road grit, brake dust) had found its way behind the pad retaining flaps, creating the sound. But that was after a couple of years of use. We reinstalled everything and the noise vanished. The spring effect of the SRS bridge plates is great as it cuts any vibration on the pad. But dust does settles behind them sometimes. What's a little compressed air every year?

Hope it helped.

BTW The bridge plates are the small shinny spring-loaded plates located at each end of where the pads rest. They allow the pads to slide without gripping.


Lee

[diegom6]

Thanks Lee for the tip! Hopefully it's that. I undertoos about the bridge. Hopefully it's that, but, if it's only that, I will have to air compress it almost weekley or every two weeks becausse the sound came back after what I did. Now, what I did wasn't what you did lol So ther eis a hope yet.

And yes, the Superlite model with biggest pistons. But they are modded, shaved both pieces to make each piece closer to each other since the rotor was thinner. Also needed to fab a custom brake line fluid "bridge" between both pieces since the original was too long after shaving both parts.

I will report later.

Thanks man!

-Diego