Brake calipers experts

[dirk07]

Need some brake experts.

Shoot only one picture of the brakes before car left to bodyshop.

I will have to change the yellow Pagid brake pads for TÜV, but I m not sure about the caliper type.

May somebody help?

[Jim Breazeale]

I'm not an expert, I'm just an old Auto Dismantler. It is probably a 911SC caliper. It could be a later Carrera caliper, though. Measure the thickness of the spacer between the 2 caliper halves and let me know the measurement. I will tell you for sure what it is. I'm pretty sure that it is a 911SC because you are still using the original brake rotor. A Carrera rotor is thicker but wouldn't show up in your pictrure. There simply isn't enough information in this picture to make a 100% positive ID.

Regards

Jim
PS: It looks like you are using later (85 to 89) Carrera front struts, but there isn't enough detail in the picture to be sure

[dirk07]

Hi Jim,

Thanks. I ll habe to ask the worker in the bodyshop to measure the space.

Pictures of the later struts👍

[Jim Breazeale]

Late Carrera front struts with pre 74 911 hubs. Interesting combination!

Regards

Jim
PS: Still can't positively ID the calipers, though

[dirk07]

Jim,

Suspension and brakes work very well.
But we have to change brake pads at least to get TÜV and the even harder to get H Kennzeichen.

Pic of the Pagids.



Dirk

[davep]

To properly identify the calipers we need to know the fluid inlet location; first is the M caliper, and second is the A caliper with inlet at the bottom of the V between the mount holes:

[Jim Breazeale]

To properly identify the calipers we need to know the fluid inlet location; first is the M caliper, and second is the A caliper with inlet at the bottom of the V between the mount holes:

Dave

The fluid inlet is already known. The issue is the thickness of the spacer between the 2 caliper halves. Carrera calipers have a thicker spacer but use thinner pads than a SC. Both use the same pistons and the swept area of the pads is the same. Carrera brake rotors are thicker than SCs, thus the need for a thicker spacer combined with a thinner brake pad.

Regards

Jim

[dirk07]

Jim,

Pictures of one caliber.

Measurement of the disk thickness is not correct. Should be measured closer to the center where the pads work.

BR Dirk

[davep]

So this appears to be the early A caliper with 7mm spacer & 20mm rotor thickness as opposed to the later wide A caliper for the 24mm rotors.
I agree with Jim, the SC caliper was pretty much a given; my clue was the conical heads on the screws. However I always like to confirm the fluid inlet. The spacers between the caliper halves do vary on the many caliper versions, so they are also very important to verify.

[haul]

Dirk,
I do not get your problems with TUEV.
Elaborate, please...

best regards