Timing marks

Doing proper ignition timing has always been an issue because the plate with the timing marks appeared to be missing. But while I was replacing the oil pan gasket, I found the plate at the very bottom of the engine, where it is doing me no good at all.

Here is the plate all by itself and it has slotted holes so it may or may not be accurate

I used a dial indicator on cylinder #1 to find true top dead centre

Then bent a piece of hanger wire and bolted it to the water pump housing. Then cut a notch into the pulley and marked it with white paint. Now I can get out the timing light and properly time the engine.