Posted by Daryl in Oz [162.158.2.79] on Saturday, April 22, 2017 at 19:16:18 :
In Reply to: Externally Balanced Crank posted by Dave Horvath [162.158.79.248] on Saturday, April 22, 2017 at 17:53:46 :
I don't believe it's a critical "external balance" in the true sense of the word, but a rubber bushed and replaceable harmonic balancer for less NVH in a car application. I would use it how I wanted to - all these flatheads are internally balanced to a reasonable degree by design.