the odd thing is theres been very little pain, the adrenaline at the time stops you feeling anything and as i was out with a general anaesthetic for the op i woke up in recovery with the job done. i whacked it with a hammer at work yesterday and it throbbed as youd normally expect but no more .
the fan wasnt running at the time but i had just driven my ebay purchase home and it was hot . the fan hadnt been cutting in as it should and the temp was running high. the key was in the half turn position to hear the radio as i worked as the fan cut in at the wrong moment.
lesson learned, always disconnect the battery when working in the engine bay.