Vintage Calipers from 914-6 #11, ...the very first 914-6 to leave the factory Options

[Eric_Shea]

Well, we received the calipers to restore for #11. This is the very first 914-6 to leave the assembly line. The car was used by the factory as a demonstrator car. They loaded it with all sorts of go fast and stop fast goodies.

In the go fast department this car received a 2.0 twin plug motor.

In the stop fast department we will see some odd things. I noticed a bunch of "little stuff" that you don't see every day on your standard 914-6.

Let's start with the rear. These are the real deal. These are real factory 914-6/GT calipers and I would dare say the very first set. Here's some of the standout differences from your standard 914-6 or even later GT calipers.

#1 - These have the 911 M-Caliper hardware for sure. The first thing I noticed was the Ribe head cap screws with the R6 head. This differs from the rounded shoulder Ribe R5 hardware used on the 914-4 and 914-6 calipers of that era.



#2 The next thing I noticed was the spacers. These are the round shouldered spacers from an early rear M-Caliper of that era. Later GT and Ferrari calipers have sharp or squared off spacers that better match the caliper mating surfaces.



#3 The final note (of distinction) for the rears would be the color. It seems as though these are definitely "yellow" cad plated. On other 914-6 calipers it was difficult to tell because they were so light. When we tear into them we can usually see some yellow on the mating surfaces but, again, it's very light in color. These look to be 914-4 yellow in color, meaning; very obvious.

[Eric_Shea]

I don't see any modifications on the S-Calipers, maybe they meant modified by adding S-Calipers. S-Rotors are the same as any vented 911 rotor of that era.

Here's some shots of the #11 S-Calipers torn down.

These were a "piece of work". They basically sat and sat. This is the dust cover and subsequent metal support ring. The metal was so rusty it was like paper. It took a while to get these out.


I preach about S-Calipers needing new pistons. About 80-90% of the time they do. Because of dis-similar metals they chromed the S-Caliper pistons. They sit and rust.


The groove in the above picture is not a serious issue, the walls of the pistons are. The groove can be beadblasted and repainted, the walls can't be replated. The only remedy here is stainless steel pistons.


Everything apart. The knock-back pins need to be machined out to re-anodize the calipers but, that's what it takes to make them new again.