914/4 rear caliper kits, to use 911 vented rotors Options

[davep]

Finally I have the parts for a kit to widen the 914/4 rear caliper for use with 911 vented rear brake rotors.
The kit includes the hub spacers, the caliper spacers and the longer pins.
The kit does not include, at this time, the longer bolts or the extra seals.
I use donor calipers from the 911 rear to provide these bolts and seals.
The bolts in the 914/4 caliper may need a Ribe bit tool to remove.
Reuse the longer (inner) bolts from the caliper to be modified as the shorter (outer) bolts.

These are the parts included in the kit:

[lylegd]

Dave, the special O rings (Porsche calls them Sealing Rings) are still available. I just received several 3 weeks ago. The part number is not listed in the 914 brake section but is listed in the '69 911S rear brake parts section. It is:
Sealing Ring #901.351.928.10

On the calipers I have split open , this rubber part is always dried out and badly cracked so its critical that you use new "sealing rings". It would be a serious mistake to reuse the original rings. Don't recall the exact price but it was roughly $2 each. Got them from Stoddards Porsche Import Cars. They have them in stock, but you should be able to order them from other Porsche part houses as well. FYI Just a reminder, if you are going to split the calipers to add the spacers, then you should also take the time to replace the tiny O rings that are part of the brake pad gap adjusters. Do your adjusters turn freely and not leak? These rings don't come in the brake caliper rebuild kits and so it would be easy to overlook. You will need a strong Circlip tool to get the parts out. Got my seals from PartsWerks. They sell them from time to time on E Bay, but I think a few other suppliers also sell them. (About $20 for a set!). They are the cause of oil leaks and what better time to replace them then when the calipers are already split. My 914-6 adjusters did not turn freely and were filled with an awful rusty looking grunge. Now they are clean and turn freely. Sometimes you may have to replace other parts in the adjusters to make them work. In my experience, about one third of the calipers require new adjuster screws and new seal caps. My advise to you, if you are going to do this job, please take the extra time to do it right.
Lyle