Well didnt have the fans on constant, gotta wire in a proper switch for now with decent wire as the wire im using is shite lol. But wouldnt have thought it would have gone into the red from just starting it and letting it idle would it?! Still more worried bout the header tank still overflowing due to a pressure build up, thats obiously related to water not circulating properly IMO, spec as the stat hosing to rad pipe ends up really hot even with the stat removed whereas the pump to rad pipe is only warm without fans or cold air from driving it!!

Yea didnt mean literally take the whole engine out as in what u said whip the head of and get it/the block checked etc!!