Are these A or S calipers??

[mmasse]

I need to buy brake pads, but I am not sure which one to get since it seems to be two different calipers for my model car. "76 911 S

Thanks

[TRE Cup]

judging by the picture- i would definitely say you have sport seats, but could not tell you what calipers you have (smile)
please post the correct pix and we'll tell you

[mmasse]

Sorry wrong pictures!!!

[Bill Verburg]

A

[klaucke]

Wouldn't the A and S take the same pad? I thought they were effectively the same caliper, only one in aluminum (S) and one in steel (A)?

[Joe Bob]

A magnet will tell ya....

[mmasse]

thanks for the answers. I am not sure if the brake pads are the same. PP seems to have different pads for them.

[jhora]

Mario,

The Aluminum S pads are thicker

John

[Zeke]

Originally posted by John Hora
Mario,

The Aluminum S pads are thicker

John

Quite correct. You can use new A pads in S calipers for a while, if needed. But, you shouldn't let them wear thin as the pistons will become overextended and could bind.

The S pads won't work in the A cals unless they are dressed down, and then they won't last as long. The difference in thickness can be overlooked if you aren't expecting it. So, if you have the wrong pads, you might still get some use out of them under the right circumstances.

S calipers have a hard line that goes around the caliper body and 2 bleeder screws. I've got some A cals around here somewhere, but I haven't looked them over closely in a long time. I don't think they have the line or the 2nd screw, but I could be mistaken.

[randywebb]

[jhora]

Here is a link to excellent info on Porsche brakes

http://www.pelicanparts.com/MotorCity/wmv/brakes.htm