A copy of the unit developed in the 1970s by Action Fours in Santa Ana, California, I built this tool and used it many times in the dealership. With just obe connection, both sides of an SOHC four ignition could be dwelled and timed. I made the mistake of loaning it out.

Note: The tools depicted on this page are shown for informational and encouraging purposes. They are not for sale. Sorry. I can however advise you on sourcing.