Re: engine balance

Posted by d c On 2015/10/24 17:53:07

Hate to say the knife edge balance of the crank by itself is incorrect or just per chance poss due to some engine designs like inline sixes and eights. A v6 or v8 of a 60 degree design or 90 degree is balanced with bob weights simulating the big end weight of the rods. The 2 rods on a throw ARE rotating weight and the crank counterweights must account for that. V8 cranks are most certainly not balanced bare. At 400 - 2600 rpm imbalance may not be an issue but if your turning a small block to 6500 or 7 grand or higher I think you had better equalize and spin balance.