Here's a video of my rebuilt (under 1000 miles) 22r. It's an 83. It just started, or got louder a day ago. I've pulled all the plugs while running and doesn't change the noise. I can feel the knocking with a wrench on the top left (passenger) V.C. bolt. All new bearings, ground crank, timing kit, etc. Valves adjusted to .08/.012 hot for the 4th time, V.C. nuts just past finger tight. Any help greatly appreciated! I'm supposed to leave on a cross country trip in a few days....

https://youtu.be/91IfkcXU9d0