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Brakes don't stop !

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Old Nov 1, 2009 | 03:01 PM
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Default Brakes don't stop !

I have a 71 'BB roadster.Everything has been done,fully restored.I have rebuilt stainless calipers,Delco pads,delco rotors that have been trued,and bedded in properly.New brake hoses,and the system has been bled enough that their is NO air.I use DOT 5 silicone brake fluid,have used it for 20+ years,don't think it's the culpret.Manual brake car ,stand on the pedal ,it stops ok but I can't lock the wheels.I feel it could be better.Thanks Paul
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Old Nov 1, 2009 | 03:04 PM
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Add PB.
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Old Nov 1, 2009 | 04:09 PM
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Originally Posted by wombvette
Add PB.
Power brakes doesnt increase braking force, just decreases effort.
I have manual brakes on my '69 and I can (and have) locked up all 4 no problem. The pedal shouldnt move too far down before the brakes start to bite. If you have a high and stiff pedal I would be looking at the pads and rotors to see if they are glazed or something else that dripped on them.
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Old Nov 1, 2009 | 04:09 PM
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power booster or hydroboost
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Old Nov 1, 2009 | 04:14 PM
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How does the pedal feel when you stand on it, firm, hard, soft? Does the firmness change over time, hot verses cold.
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Old Nov 1, 2009 | 05:00 PM
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Did you boil the air out of the silicone before you put it in ?
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Old Nov 1, 2009 | 05:52 PM
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Originally Posted by vette427-sbc
Power brakes doesnt increase braking force, just decreases effort.
I have manual brakes on my '69 and I can (and have) locked up all 4 no problem. The pedal shouldnt move too far down before the brakes start to bite. If you have a high and stiff pedal I would be looking at the pads and rotors to see if they are glazed or something else that dripped on them.
Sure it does, or radically increases you ability to apply that force. I have seen many that you couldn't stand on and slide the wheels, added PB, put you through the windshield. For instance my modified `66 wouldn't stop in a forty acre field, put PB booster from an `89 and it will slide um with big toe pressure.
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