[Aerkuld]

Have to agree with dadio on this I'm afraid. Look at it this way;

A new header tank is a hell of a lot cheaper than the problems you are likely to encounter with an overheated engine.

Another possible problem - what antifreeze did you use? If you use the wrong stuff you might run into more problems. The Porsche antifreeze can turn into jello if you mix it with an incompatible type.

I don't want to scare you, but I'd hate to see this turn into a catalogue of disasters.