Originally Posted by BOBCRMAN@aol.com
Most of the kits that I see are not very close on their balance job. Usually + - 5 gr. or sometimes + - 10 percent. A machine shop will usually use a + - 1/2 gr. balance.
Depending on what it is 5 grams is well within the acceptable range for anything on the street. In fact most engines on the street won't be within that spec from the factory. 10% on the other hand can mean a LOT when you're dealing with a 1700 gram bob weight- that would be 170 grams.