Top Dead Center on my 79 CB650...

[seebeesixfifty]

anyone have any info on this?

[Volker_P]

You have TDC simultaneous for cylinders 1+4 and after turning the crankshaft at the right side (beneath the circular cover) with a 24mm socket by 180° you have TDC for 2+3 (again simultaneous).

For identification, there are timing marks at the ignition plate, here is a picture of the timing marks for 1+4 (1.4T) viewtopic.php?f=4&t=3463

Hope that helps.