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Old 08-28-2004, 12:43 PM
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disc brake problem?

Are the rotors on my front brakes supposed to slide freely inside the caliper?When I jack up my car and spin the tires there seems to be a fair amount of resistance.Is this normal?The car is a 67 nova with front disc brake conversion.The car is also alittle hard to stop.I really have to press hard on the brake pedal.All you brake gurus help me out please.thanks bm

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Old 08-28-2004, 05:38 PM
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Yes there should be considerable resistance when spinning the front wheels by hand, the pads ride on the rotors.

Maybe you need a bigger bore master cylinder.

Troy

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Old 08-29-2004, 12:41 PM
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It really depends on what disc brake you swapped in!

If you have to press hard on the brake peddle to stop the car putting in a larger master cylinder will just make it worse! What you need is a smaller bore MC. Sometimes a larger booster is also a good idea (if you have the vacuum to make it work) or even a dual diaphram booster.

Could you list all the parts you used in your brake swap?
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Old 09-03-2004, 08:18 PM
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There should be very little resistance to spin the front wheel of a RWD vehicle with disc brakes.

If there is considerable resistance, there is a problem, or the vehicle has sat for a long time and rust has built up... or considerable is a relative term.

With the wheel in place, you should be able to spin it with your palm on the sidewall. It should continue at least one revolution. If the pads ride on the rotors with any real force, they may overheat.

Without having more info, it will be difficult to help. Take the master cyl bolts loose and see if the brakes release. You may have more than one problem.
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Old 09-03-2004, 08:58 PM
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The front pads have to ride against the rotor at all times. Thats the way they work.

Troy

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