hi dave , thanks for the reply

unsure if i can do pressure test as header tank has got a small split in near the cap , again making me think its HG with hot gasses entering the cooling system and its been doing the bubbling up at times when ive taken the cap off , possibly damaged the tank ? like i said i want to do the HG anyway so i know its good , kits already here for that ive just got to order new cam belt n water pump hopefully will get it finished just in time for MOT in october . im wondering if its had that K seal stuff put in at sometime

guess i will find out soon
thanks .... richard