Yep this was the problem.
Took the air filter housing off and the master cylinder and shortened the push rod in the booster
Fixed all of my problems with pressure build up and hot brakes
Thankyou!
Hello everyone new here as a member but have been lurking for a while.
I have a 1978 BJ40 that I have been slowly doing up to put back on the road.
One of the main problems have been the brakes. Still has drums all around. I have replaced all the wheel cylinders, rubber lines, master cylinder...