rhythmic vibration
Here's the actual culprit of our rythmic vibration on a 70 340 that was internally balanced......someone installed a counterweight in the back of the balancer........had to unbolt the weight from the back, tap it out, and the vibration was gone......you can just barely see it in this pic.........I believe it was an allen bolt.
It's easy to check.........and after seeing this on a pro-built motor, I trust NO ONE. 8)
Here's the actual culprit of our rythmic vibration on a 70 340 that was internally balanced......someone installed a counterweight in the back of the balancer........had to unbolt the weight from the back, tap it out, and the vibration was gone......you can just barely see it in this pic.........I believe it was an allen bolt.
It's easy to check.........and after seeing this on a pro-built motor, I trust NO ONE. 8)