Not trying to hijack this thread, but I just did a rebuild (piston, rings, connecting rod, valves) on an fe290, but didn't touch the counterweight connecting rods. Now I'm getting an unpleasant sound at higher RPM's. It starts to become noticeable about 10 seconds into this video. Just wondering if you guys think this sounds like the link rod bearings.
FE290D Rebuild
Thanks for any input.