Finding Top Dead Centre.
I assembled the engine block of the Sunbeam including the flywheel. I had scribed a line on the flywheel where the original TDC mark was.
I used a dial gauge on a magnetic stand which stuck to the iron cylinder liner. The photo below shows the setup used on another engine to find top dead centre of a cam lobe. This setup was used to find the top dead centre of the pistons on the Sunbeam.
The scribed line was used as the reference point to mark a dot on the steel backplate. I used a small battery powered engraving tool to make the 'dot'. This makes finding top dead centre for timing the distributor a bit more accurate. I use a mirror ( see photo ) but I was thinking maybe a USB camera connected to a laptop could give a more accurate view of the flywheel marks.
Mirror showing reverse flwheel markings.
