balance

Building a new motor as a few of you know and am wondering if I need to balance my crank. On a V8 it is a no brainer for me and if I was using a new crank or changed the weight of the rotating assembly I would. I ask because I see a lot of people add billet rods and change pistons with out re...

Building a gx390 to turn around 7,500 RPM's. What's the thought on the balance shaft leave it in or remove it?

So i just put some new street tires on my db and they are pretty sweet but they are alittle out of balance. Right now my front tire especially is quite out of balance up past 45mph up my top speed of 51. Has anyone ever tryed dynabeads in a minibike? I have had good luck in my motorcycles with...

i was worring if u had to run the balance shaft in a gx340