914/6 rear caliper spacers, one solution Options

[michel richard]

In the process of restoring my 914/6, I want to have vented rear rotors, mostly because I'm going to have a big engine, but also because I think it's kinda cool.

The stash of parts I bought from Jon Lowe contained some rebuilt original 914/6 rear calipers.

It also contained some good condition 911 front calipers "A" calipers I think: 3 inch bolt spacing, steel, and with a spacer. They had 48 mm pistons.

To build rear calipers that have a spacer, there is one recipe that uses the spacers from the rear of 911 mid-year calipers, as well as other hardware. Those spacers are 10 mm. I don,t have such calipers and initial attempts at getting some were unfruitlful.

So, I took the spacers from the front calipers that I have, but they're 7.5 mm thick.

[michel richard]

I phoned Parts Heaven and talked to Jeff. He agreed to take core calipers apart and to ship just the spacers and the bolts. US$ 40 !
I'll report when they arrive.
I then use regular 911 rear vented rotors, right ? If memory serves, the only thing that might happen is the need to turn down the outer diameter a couple of mm.
If all works out well in that area, the plan is to get spreader springs, the rotor spacers and longer studs from Eric.