brake pads are frozen

[jprice224]

the front bake pads on my 82sc will not release. I have bled the system.

[redstrosekNic]

Check your brake hoses

[redstrosekNic]

BTW, it's always cool to see some pics of your car on your first post

[Dantilla]

Stuck calipers?

Has the car been unused for an extended period?

[T77911S]

opne the bleeder valve and try to work one out. once you have one out, close the valve and have someone press the brake pedal to break the piston lose. be careful not to let it pop out.
once that one if free, put that pad back in and do the other piston.
i have a set of large pliers i use to press the pistons bck in.

at the least you will have to do some rebuilding of the calipers. inspect the pistons and calipers for pitting. if pitted, replace.

i spent HOURS on a friends volvo when his calipers where frozen. should have taken 30minutes to do. the calipers were shot but with extreme warning, i got it going.


this is why i think every so often you sould really stand on th brakes several times. this keeps both pistons moving. the people that are very soft on their brakes are just asking for a lot of $$ when it does come time to replace pads. one piston will startt to do all the work when one stops working from corrosion.

[jprice224]

It began the problem when the car was frequently driven.
I bled the brakes and manipulated the calipers the pads were at + 65%

[Dantilla]

Time for a caliper rebuild kit.

I recently redid the rear calipers on my 944S (can I say "944" here?).
Just a few rubber bits and pieces to replace, and they function as new. Pretty easy job.

[GaryR]

Along those lines, where can you get a hone to clean up the inside of the piston bores when they are gunked up beyond what a scotchbrite can do?

[Craig_D]

Originally Posted by GaryR

Along those lines, where can you get a hone to clean up the inside of the piston bores when they are gunked up beyond what a scotchbrite can do?

Eric Shea at PMB is THE MAN for brake calipers. Send them to him for re-plating and rebuilding.

http://www.pmbperformance.com/calipers.html

[GaryR]

Originally Posted by Craig_D

Eric Shea at PMB is THE MAN for brake calipers. Send them to him for re-plating and rebuilding.

http://www.pmbperformance.com/calipers.html

Appreciate the info Craig, but not interested in that level of refinishing, just need to clean up the bores sometimes when I rebuild my calipers. I thinks the oil just gets baked on/hardened sometimes in my race car. I'm thinking scotch-brite wheel of the right diameter when I say "hone".. not a stone. Just not sure which one or where to get it.

[jprice224]

Thanks for asking this question. The someplace between how bad is "BAD" replacement level and complete cleaning. Related to the fail to release issue is, will a bad master cylinder produce this result?

[moneymanager]

I think any auto parts store will sell you a hone that goes in your portable electric drill. Or just take them to a shop and get a pro to do it.

[ruf-porsche]

Just knock off any high spots, the seal is what the pistons are touching, not the bore. If you need stainless steel piston for an 82 SC I have a set for 1 caliper. Brand new in the box.