After buying a spare head and looking at it in the garage for 3 months it was finally time to start work. The head came fitted with springs and valves but no cams/followers. So first job was to remove them. This was surprisingly easy. this was done one month ago but still not enough bravery to start the porting. Working abroad, away from the caterham, for a month at a time gives me the chance to order parts to fit for when I arrive back home for my month off. Its sometimes dangerous, its as if b