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Join Date: Sep 2015
Location: Florida
Posts: 1
Question Brakes won't lock up no matter what

Just bought a 1983 944 and the brakes seemed weak and soft. No matter how hard I press the pedal couldn't lock the brakes.
Checked them out and it looked like the calipers were rusted in one place but had new looking pads. The car had been in storage for awhile.
Rebuilt the all four calipers. New hardware and pads.
Replaced the master cylinder since a rebuild kit was just as much as a replacement.
Replaced some questionable brake lines.
The power booster seemed to be working okay near as I can tell, but it wasn't replaced.
So with the new brakes on the car I still can't lock up the brakes.
I press the pedal to try and lock them and the car stops, but not suddenly.
It's only been driven a hundred miles or so since the being re-done.
Is this normal and they will work better after seating or do I need to look at the power booster and pedal?

Old 09-09-2015, 07:08 PM
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Turbofrog
 
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Join Date: Aug 2009
Location: Europe
Posts: 1,677
Air in the system? Let it gravitybleed for some time (open the bleed niples) and test again. Some have good luch with pressure bleed and others with vacuum bleed.

Or your calipers are not stock and the master can not handle the volume of the cylinders?

Same goes otherway: Too small master if not stock?

Wrong forum BTW! Might get better answers on 944 forum! So lets not continue this here : )
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Old 09-09-2015, 08:44 PM
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Join Date: Oct 2008
Location: Cincinnati
Posts: 180
You mentioned that the pads look new. It's possible that the pads are glazed from getting them too hot during break-in. I was in the auto parts business for a long time and I did see this couple of times. You might try replacing the pads and see if that fixes the problem.
Mac
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Old 09-17-2015, 08:45 AM
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3 restos WIP = psycho
 
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Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
It they're glazed, you can kiss them on a disc sander to remove the glaze. I'm thinking the pads are either glazed or just a really crappy compound.

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Old 09-17-2015, 09:51 AM
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