Neil71

Yes the problem happened before I started to replace everything. The first time it happened my TF had came out of hibernation and I had driven approx 10 miles and both the rear brake seized. I thought first of all it was the callipers as they were still the original ones. I had already purchased the big brake conversion kit so when I fitted a new set of rear callipers, new rear discs and new rear pads I fitted the big brake kit to the front. Bled everything and all was fine for the small test drive I did, then due to other things going on the TF was never used again until the following year for the MOT and it sailed through the brake test.
I took part in a classic country run and after approx 15 miles the rear brakes seized on again. Thankfully the run had a recovery vehicle following so I ended up on the back of the recovery. By the time we got back to the show ground the brakes had cooled and the car was free to move again.

I did think the new pads along with the new discs were making the clearances tighter. I am going to take a 1mm off each pad and give it a try.

It's both rears, servo and master cylinder were replaced by 2nd hand items. I also replaced the brake balance valve with a 2nd hand one and still the problem persists.

Hi, I have had problems with the rear brakes binding after running aporox 5 miles or more, rear wheels are too hot to touch, once everything cools down you can drive again for a similar distance.
I have replaced the rear calippers twice with brand new ones, thinking the original ones were knackered, bought a brand new pair, genuine old stock, and again they seize once hot, bought another brand new pair and still the same happening.
I upgraded the front with the big brake kit. I have replaced all the flexible pipes with stainless steel braided ones, I have replaced the servo and master cylinder with a 2nd hand one, I replaced the brake balance valve.
Handbrake is slackened right off.
Still the rear brakes are binding once you've run 5 miles or more. Let everything cool down and all seems fine again.
Has anyone experienced this with fitting the big brake kit?
The MGTF doesn't have ABS so it's a straight forward system but yet its still happening.
I checked the servo vacuum pipe and that's all in order.
Pulling my hair out now trying to figure out what the problem is.
Any help greatly appreciated.