with a vernier depth gauge stani :grinning: , i measure from the top of the cam bearing to the top of the shim/bucket when the valve is closed
then measure how much the valves are open @ tdc (stock valve timings are 16/0/0/16 for the 1.0, and 42/0/0/42 for the 1.3,s) so they should be set at 0 and 0 (ie, the inlet is about to open, and the exhaust has just fully closed) so no overlap
260 deg cams will have some overlap to scavenge the combustion chamber eh, so all 4 valves will be open about 1mm @ tdc
