Back Brake Noisy
Thread Starter
Instructor
Joined: Feb 2008
Posts: 237
Likes: 0
From: Roseville CA
Back Brake Noisy
I just purchased my first Vette, a 1972. All is good. However, the rear passenger brake is making a dragging sound that goes away when the brakes are pressed. The rotors look good and the pads look new. Any ideas!
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
I would guess one or more of the piston return springs are bad or broken, which in turn does not keep the normal amount of pad pressure on the rotor.
Any idea of the age of the components? If they are the stock calipers they might need to be rebuilt and retrofitted with stainless steel sleeves in the piston bores.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
My 72 coupe does the exact same thing.
The harder I press the brake pedal, the quieter it gets.
Gently pulling up on the park brake has no effect.
I am guessing the rotor is slightly warped.
I suspect fresh rotors and pads will fix. We shall see.
The harder I press the brake pedal, the quieter it gets.
Gently pulling up on the park brake has no effect.
I am guessing the rotor is slightly warped.
I suspect fresh rotors and pads will fix. We shall see.
Burning Brakes
Joined: Oct 2006
Posts: 1,006
Likes: 28
From: Lutz Florida
Also check this: one, or both of the parking brake return springs could have rusted through, broken, fallen out and be rubbing against the inside of the rotor hub. Also, If the rivets were drilled out to replace the rotors, check to see if one didn't fall down inside and catch on something and now be rubbing on the inside of the rotor hub. I thought I had mine all accounted for when I drilled them out. A few days later I started getting a loud scraping sound from the passenger side rear. Expecting the worst, I pulled off the rotor, and there it was; a loose piece of drilled out rivet was causing the noise by rubbing against the inside of the rotor. It must have wedged itself between the parking brake shoe. Whew! Fortunately the rivets are a lot softer than Rotor steel so nothing was hurt. Hope that is all that is wrong with yours.
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Burning Brakes
Joined: Nov 2006
Posts: 1,125
Likes: 4
From: Flower Mound TX.
You guys, my 72 coupe does the exact same thing. I have not had a chance to look at it yet. The pads are new, rotors are new, Brake clipers rebuilt a year ago. I'm planing on looking at it next week. if I come up with somthing I'll let you guys know. Mine is also the right rear.
Thread Starter
Instructor
Joined: Feb 2008
Posts: 237
Likes: 0
From: Roseville CA
Well, it looks like I have this weekend's project planned out. I'll look for material. There is a Vette supplier in town I'll take the rotor and caliper and what ever else I can tear off too for a look. Let you know what I find out. Thanks for the info....