So, a bit of an update.
Got new tyres on the front - went from 165/80/13 to 70 profile. They're now slightly smaller diameter than the rears, and the car sits much better now:
Slightly nose down now, how I wanted it.
Rear speakers are wired in, sounds much better. They sound much better and louder than the fronts, with the fronts being under the seats. I think I should consider making up boxes to go on the front parcel shelf, but I know it's going to be a pain because that whole bit on old cars is made out of crap flimsy board. Maybe one day. Sounds ok though, happy with it. More important things to deal with! Im fact I wired up the back speakers because I had the hump with the brakes!
So, the brakes. The brakes are shocking on this thing, just shocking. They also felt like one or both front calipers might be slightly stuck. Loads of brake dust, sometimes very hot after a drive, but they do stop the car. Eventutally. However I'm not happy with them and I also have intentions towards a new engine in the future, if I end up going for an MX5 lump it will be between 100-130bhp at first, and these things are
not going to cut the mustard then, and to be realistic aren't good enough now. First step to bleed them.
Got her up on stands - first nipple stuck and rounded. Second nipple ok. Tried one of the fronts, stuck. I'm not going to bleed the system out of one nipple and I have no hope of getting them off with normal open ended spanners. It gets boring here for a bit so I'll skip to the end. I'm now the owner of a blowtorch, AF flare nut spanners, and these:
Which are magic as far as I'm concerned.
Anyway skip the end, they're off:
And as a bonus this explains part of it:
I can see my face in them! Super glazed, 0.5mm short of the rivets.
I've got new shoes here, presumably they fit! If they don't I'll still replace.
I'm speaking to a couple of companies and the plan is for replacement cylinders for the rear, replacement hoses, hopefully braided or reinforced with braiding, front and rear, and I'm going to have my calipers remanufactured for the front. Will get new pads while I'm about it - my pads are new but I'm going to see if I can get something better. The pads etc fit various cars including the very popular MGB, so there's a fair bit of choice. I think my discs are ok, they look fine to me anyway, so I'll leave them for now.
Hopefully putting all this on and bleeding it through won't muller my master cylinder, but I'm ready for it to. The way I've had it explained to me is that say your MC piston is 10cm long, it's spent however many years (as many as 54 in Mildred's case) travelling say 3cm, back and forth, over and over, and has worn itself nicely to that point. You drop your fluid, fill up, put the pedal to the floor, and immediately push past that 3cm and smoosh your o-rings etc all over everywhere when they hit the lip that's been worn into the cylinder. So I'll try to bleed it carefully but if/when I muller it, I'll replace that too.
Then my brakes should be running at their maximum capacity. I'm considering a brake booster, but they don't, from what I understand, actually provide any more braking power - just a lighter pedal feel. Maybe I will look into a larger master cylinder? I have no expertise in this at all though so I'll see how I go with this refresh of the braking system. Like I said, in its poor state it did stop the car, so when it's tip top I'm hoping it should be ok.