Rear brake issues.
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
Rear brake issues.
About 1500 miles ago I installed C5 brakes in the front, new (stock) calipers in the rear, new pads, rotors, and SS brake lines...
The car stops GREAT! But I think its ALL on the front brakes. I also think its all on the front because I get NO dust on the rear rims...
THE PROBLEM
- The rear pads are wearing un evenly.
- They are not "pintching" the full width of the rotor.
- E-brake is weak and on slight incline/decline it will not hold.
I have bled the brakes MULTIPLE times... I dont know what to do any more...
Joe
The car stops GREAT! But I think its ALL on the front brakes. I also think its all on the front because I get NO dust on the rear rims...
THE PROBLEM
- The rear pads are wearing un evenly.
- They are not "pintching" the full width of the rotor.
- E-brake is weak and on slight incline/decline it will not hold.
I have bled the brakes MULTIPLE times... I dont know what to do any more...
Joe
Team Owner
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From: Riverside County Southern California
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Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
Former Vendor
Joined: Feb 2004
Posts: 9,615
Likes: 13
From: Burlington NC
Good things often come in small packages. A lot of thought and successful racing experience went into the design of the DRM BrakeBias spring. Easily installed, this spring effectively puts more rear brake into your Corvette, giving you shorter stopping distances and more equalized front-to-rear brake pad wear. Also by having the rear pads do more work, front end nose-dive is reduced. This results in greater stability and vehicle control under extreme braking.
On the C5, the DRM Bias Spring easily installs in the junction block, and on the C4, it installs in the front of the master cylinder.
This above info was right off our website.
www.dougrippie.com
Thanks
Randy
763-477-9272
Le Mans Master
Joined: Sep 2003
Posts: 5,874
Likes: 0
From: Littleton CO
How so? Is the guide pin lubed and in good shape? How about the caliper bracket - is it worn or warped?
The fronts don't do that either. It's probably normal. I'd take a look, but the car is at home.
The lever/cable mechanism is self-adjusting. Owners manual has details - IIRC, you just engage and release several times in succession. If that doesn't help, your caliper(s) may not be able to move within the bracket & clamp freely, as I was poking at up above.
I'd make sure everything is working properly before installing the bias spring. You may find that you don't need it and if there is a real problem, the spring alone won't fix it.
The fronts don't do that either. It's probably normal. I'd take a look, but the car is at home.
The lever/cable mechanism is self-adjusting. Owners manual has details - IIRC, you just engage and release several times in succession. If that doesn't help, your caliper(s) may not be able to move within the bracket & clamp freely, as I was poking at up above.
I'd make sure everything is working properly before installing the bias spring. You may find that you don't need it and if there is a real problem, the spring alone won't fix it.
Last edited by jrp; May 8, 2008 at 02:39 PM.
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
How so? Is the guide pin lubed and in good shape? How about the caliper bracket - is it worn or warped?
The fronts don't do that either. It's probably normal. I'd take a look, but the car is at home.
The lever/cable mechanism is self-adjusting. Owners manual has details - IIRC, you just engage and release several times in succession. If that doesn't help, your caliper(s) may not be able to move within the bracket & clamp freely, as I was poking at up above.
I'd make sure everything is working properly before installing the bias spring. You may find that you don't need it and if there is a real problem, the spring alone won't fix it.
The fronts don't do that either. It's probably normal. I'd take a look, but the car is at home.
The lever/cable mechanism is self-adjusting. Owners manual has details - IIRC, you just engage and release several times in succession. If that doesn't help, your caliper(s) may not be able to move within the bracket & clamp freely, as I was poking at up above.
I'd make sure everything is working properly before installing the bias spring. You may find that you don't need it and if there is a real problem, the spring alone won't fix it.
The only way I can explain in words is that the TOP of the pad is wearing and the bottom is NOT, making the pad look like it has an angle in it...Also you can see where the pad OVERLAPS the rotor but still doesnt grab it...
Joe
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Le Mans Master
Joined: Sep 2003
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From: Littleton CO
It is apparent that your caliper isn't clamping the rotor correctly for some reason. IMO, the bias spring won't fix that either, however good it is at achieving a desired braking balance. Until you get things resolved, it will simply cause your rear calipers to clamp incorrectly with more force.
Le Mans Master
Joined: Sep 2003
Posts: 5,874
Likes: 0
From: Littleton CO
Worse yet, the additional force on the rear brakes may give you a false impression that you have corrected your problem. At least until you take another look down the road to find pads still being worn down in a horrible taper.
Safety Car
Joined: Jul 2004
Posts: 3,834
Likes: 30
The bias spring? It won't help the parking brake at all, since that linkage is completely divorced from the hydraulics.
It is apparent that your caliper isn't clamping the rotor correctly for some reason. IMO, the bias spring won't fix that either, however good it is at achieving a desired braking balance. Until you get things resolved, it will simply cause your rear calipers to clamp incorrectly with more force.
It is apparent that your caliper isn't clamping the rotor correctly for some reason. IMO, the bias spring won't fix that either, however good it is at achieving a desired braking balance. Until you get things resolved, it will simply cause your rear calipers to clamp incorrectly with more force.
Thread Starter
Melting Slicks
Joined: Apr 2007
Posts: 2,547
Likes: 46
From: NJ
I have not adjusted the E brake yet. I dont know where to get that information.