I do have a habit of disappearing from here for a while, must do better!
Update time:
Brakes are finished and fully functional. Next task was the fuel which includes a gallon or two of leaded petrol from 1985. I drained the tank and removed it from the car. The petrol was all still very liquid with no sign of gum, but all very dark brown. I don't know which smells worse, stale fuel, or gear oil! As an experiment I poured some on a cloth and ignited it in a safe place and discovered it is still highly volatile, so every precaution needs to be taken. The interior of the tank had a layer of rust, so I pressure washed what I could reach, although the baffles prevent much access. I decided to remove the rust using electrolysis. I tried it for 24 hours then another 20 for good measure. I am very pleased with the result as after a good rinse out it looks as good as new.
The Bosch fuel pump was non functioning and long obsolete. I did find one on a Porsche site in the USA for $1400, or alternatively spares or repairs on Ebay in Germany. I watched a video on YouTube on how to recondition a similar one, so decided to have a go. I now have a fully functional petrol pump. I blew air through the fuel lines and they are clear. I have bought new braided fuel hoses for all connections and will replace them all. I am just awaiting delivery of a load of hose clamps before I start reassembly. Hopefully the fuel injection is ok as I think it is beyond my capabilities.
That's all for now.