Managed to get in the garage on Saturday after a long time of not being in the garage
Anyway had another play with the Porsche engine, still struggling to get it running on all cylinders due to carb balancing etc. So gave up on that whilst a scratch my head and work out what's wrong
Fitted the late bay disc setup about 18 months ago but suffered bad pad wear and slight dragging with the squeek squeek of dragging pads on hot days. Assumed as others have said need to change the brake master cylinder to a late bay disc type. However saw a post from Strongy suggesting an inline valve was fitted to the early drum brake master cyinder to hold the shoes close to the drums and that the valve can be removed. So exchanged a pm with Strongy and he point me in the right direction.
The Master Cylinder has 3 ouputs, 1 at the front for the rear brakes and 2 at the rear of the MC for the front brakes ( I know sounds a little ares about) Between the output of the MC and the brake pipe 11mm spanner is a large nut containing the one way valve, see photo below.
You need to disconnect the brake pipe with an 11mm spanner than remove the valve with a 17mm spanner, photo below shows valve removed.
With a pair of pliers or grips remove the valve, as shown in the photo below.
As per Haynes manual quote, refit is reversal of removal. :lol:
Dont forgot to bleed the brakes and top up the brake fluid, quick test round the block and no more dragging brakes , tada!
thanks Strongy for the tip :mrgreen: