E30 Zone

Guys, my temp keeps going up wild high and making the pipes solid, as if the HG has gone, (we changed it the other week with a new head aswell)

Every now and then my heater would stop blowing hot air, as if there is no hot water getting to the matrix. When i changed the thermostat as i thought that was the dodgy bit it came with a different O ring, one that went on the rim of it instead of infront like the original. It made it just as bad, so ive taken the O ring out for now and running it colder than normal,

I was after fitting instructions as this cant be right
Pictures if possible

Thanks guys
Mark

you have to bleed your radiator, for sure you have air in the circuit and you need to get it out!

Ive bled the rad and its still got the same problem, now that the o ring is out of the housing ive got hot air in the car, so its got to be the thermostat blocking it, but surely this isnt right