12-25-2014, 05:28 PM
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Senior Club Cobra Member
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Join Date: Mar 2000
Location: St. Augustine,
FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
Posts: 1,949
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Not Ranked
Olly,
OK. I read more and have a couple more what-ifs:
You said
Quote:
If i push on the pedal, i can go through the vibe.
If a piston has air in it, would it retract more or less??
What about a rolled seal??
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As air in the brake caliper warms up it will expand. In any case, the max pressure on the pad will be less because of the compressibility of the air bubble.
Your question reminded me that bleeding the rear calipers on my car was a real chore. I must have done it 5 times before I was mostly sure there wasn't any air left inside. When I bleed the fluid to do a change I try not to introduce any air.
Message: be certain there is no slight foam or air left in the calipers.
Second point, I noticed you mentioned the calipers but didn't respond to Rick's suggestion about looking into and testing the emergency brake, I second the testing of the e-brake that he suggested. The actuating mechanism for that piece can be irksome.
Next, are the rotors centered in the calipers? There's usually a 0.020" shim inboard of the rotor, also 0.005" shims are available if needed.
That's all I got today....
Tom
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Wells's law of engine size: If it matters what gear you're in, the engine's too small!
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