With our grounds in good shape, we still couldn’t get the engine to time correctly. Further investigation showed the balancer-to-crank bolt was loose. Knowing that the previous owner replaced the rod and main bearings as preventative maintenance after the oil pump failed, it’s possible he lost the locating Woodruff key, allowing the balancer to spin on the crank. We hooked up a vacuum gauge and set the timing to deliver the highest manifold vacuum with the engine idling at 650 rpm. That’s where we’ll leave it this month until we have a chance to dig into the engine further.