Brake pipe flares

If you are meaning the 2 pot AP callipers fitted to the last TF's that were made then you are correct, they should have been fitted alongside either the Rover 800 267mm disc which is what the calliper was designed for or a 280mm disc. In my case my car came with the four pots but I sold them very quickly due to their corroded condition and the cost of rebuilding them. 
 

Yes, I have obtained a pair of unused 2 pot AP callipers. So with 280 on the back it should be reasonably balanced.
Whilst piston seals and possibly pistons are still available the dust shields are not for the 2 pot.
So Im going to give it a trial.

Im still a little uncertain as to how the bubble flare is formed. Most tools seem to quote single or double but not bubble which is what I think are deployed on the TF.
Can anyone help with that please?

I would have chosen the two pots over the four pots myself. There is just something solid about them and I prefer them to a single pot with sliding pins.
Try some of the big brake refurbishing companies because a lot of the seals and dust covers fit multiple callipers and whilst AP may say "no longer available' the refurbisher may have an alternative because they tend not to be unique to specific callipers.
The brake pipe kit should come with formers to do the bubble or mushroom flare.
Good luck.

for what it is worth
I spoke to AP tech after a little “encouragement” applied over the phone.
I suggested the piston couldn’t have been unique and they must have spares. He checked whilst we talked about it before saying the piston seals were common to others (so I bought some as spares from their agent). But the dust cover was unique and no longer available.

 

With some relief I can confirm that the flare appears to be holding.
However there is a but, a big but
Ill start a new thread on that as it is more around electronics and possibly bleeding brakes.

Delbourt wrote:

With some relief I can confirm that the flare appears to be holding.
However there is a but, a big but
Ill start a new thread on that as it is more around electronics and possibly bleeding brakes.
 

So you have a big but.............too much information! 🤣

Glad to see you're getting back on track with your comments, keep them coming.

Here (below) is the response from AP racing regarding spare seals for the 2 pot callipers. Thought this might be helpful for those with the2 pot and following this topic.
“We have investigated the main piston seal issue you discussed with Joe and we can confirm an alternative to the original CP5107-116 seal is CP4949-116.If you contact your nearest official distributor from this list Find a Distributor | AP Racing for a quote as it’s not possible to buy directly from us.The dirt seal is also not available but if you remove the original inspect and if not cracked or hardened significantly you can immerse this seal in the same brake fluid being used on the car for a few hours.”

Delbourt wrote:

for what it is worth
...... But the dust cover was unique and no longer available.


 

Maybe I'm misunderstanding what you are talking about here, but...

I have the AP 4-pots.  When I changed the DOT4, all of the covers were missing from the bleed nipples.  I bought these on ebay for a couple of quid.  They seem to do the job.

Bruce apologies if I gave rise to confusion. No I am not referring to the covers on the bleed nipples.

It is the seal around the piston within the body of the caliper is available and that is the part number I have identified (it is not the part number attributed to the 2 pot caliper when it was introduced but it is an identical seal).
External to the piston there is a seal that fits around the piston and locates in the body of the caliper to keep debris away from the piston itself as the piston moves moves. It is this seal that is NLA. And apparently there is no alternative according to APP tech chaps.
They do not recommend red rubber grease and instead suggest soaking in brake fluid.
Hope that clarifies.