1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Brake Pad Clearance

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Old May 15, 2009 | 11:52 PM
  #1  
sarniamike's Avatar
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From: ontario canada
Brake Pad Clearance

How can I get more? I have an 84 SE, and my pads touch the rotors all the time.

I can spin the rotor easy enough but I think I should be able to have the car on jackstands, spin the front tire and have it go 3 or 4 turns before stopping. Right now I get a half a turn.

I just got the car certified and part of that involved new calipers. So...is there away to adjust the pad clearance??

Thanks guys
Mike
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Old May 16, 2009 | 11:39 AM
  #2  
BlackWorksInc's Avatar
Wrkn Toyota, Rootn Wankel
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From: "Haystack" Hayward, CA
Originally Posted by sarniamike
How can I get more? I have an 84 SE, and my pads touch the rotors all the time.

I can spin the rotor easy enough but I think I should be able to have the car on jackstands, spin the front tire and have it go 3 or 4 turns before stopping. Right now I get a half a turn.

I just got the car certified and part of that involved new calipers. So...is there away to adjust the pad clearance??

Thanks guys
Mike
An old trick for tight pads it to rub a few thousandths off on some concrete.
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Old May 16, 2009 | 10:30 PM
  #3  
sarniamike's Avatar
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Are you serious? I 'll do it tommorow if no one else chimes in......please chime in
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Old May 17, 2009 | 01:43 AM
  #4  
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There is no such thing as pads that are too thick. :-)

Normally when you spin the tire it should spin somewhat freely but not 2-3 revolutions.
It is normal to have the pads slightly resting against the rotors as there is hydraulic pressure created by the master cylinder and that never completely releases.
The wheel bearings may be adjusted too tight.
Do both wheels have the same amount of resistance in them?

Also did you clean and lube the caliper slider pins with grease?

No you don't do this-
An old trick for tight pads it to rub a few thousandths off on some concrete.

Last edited by Rx-7Doctor; May 17, 2009 at 01:45 AM.
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Old May 17, 2009 | 02:05 AM
  #5  
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From: Quinlan, TX
Originally Posted by Rx-7Doctor
There is no such thing as pads that are too thick. :-)

Normally when you spin the tire it should spin somewhat freely but not 2-3 revolutions.
It is normal to have the pads slightly resting against the rotors as there is hydraulic pressure created by the master cylinder and that never completely releases.
The wheel bearings may be adjusted too tight.
Do both wheels have the same amount of resistance in them?

Also did you clean and lube the caliper slider pins with grease?

No you don't do this-
An old trick for tight pads it to rub a few thousandths off on some concrete.
Definitly make sure you do that. The caliper won't 'float' when rust seizes it to the pins.
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Old May 17, 2009 | 07:10 AM
  #6  
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From: SW Florida
There is a Z shaped wire spring that belongs in each front caliper. It's purpose is to keep slight pressure against the back pad to hold it against the piston and off of the rotor. I suppose I need a picture.
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Old May 17, 2009 | 03:10 PM
  #7  
BlackWorksInc's Avatar
Wrkn Toyota, Rootn Wankel
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From: "Haystack" Hayward, CA
Originally Posted by Rx-7Doctor
There is no such thing as pads that are too thick. :-)

Normally when you spin the tire it should spin somewhat freely but not 2-3 revolutions.
It is normal to have the pads slightly resting against the rotors as there is hydraulic pressure created by the master cylinder and that never completely releases.
The wheel bearings may be adjusted too tight.
Do both wheels have the same amount of resistance in them?

Also did you clean and lube the caliper slider pins with grease?

No you don't do this-
An old trick for tight pads it to rub a few thousandths off on some concrete.
Aww fudge! You mean the old school solutions don't work? I had some old school guy from when he was mechanic in the 70's tell me that. Hence the eyeroll.
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