harmonic balancer

[brokenujoint]

i've got a question. I chose to get a rebuild done on the 4.0. Just a stock rebuild.. I know, I know. Anyways, I am replacing my harmonic balancer. The thing is and I'm ignorant to the fact is that my old one that came off had 4 holes machined into it. I assume for counterweight for the crank? The new one that I bought from Summitracing and IS IN FACT the right part for my yr/model only has two of these machined holes. Are these holes to balance the balancer or are they countered to balance the resonation of the crank? Will the 2 hole one work w/my engine or will it require one with the same hole count? Not mine but what my old one looks like and my new one

[SilverXJ]

The holes are not for counter weighting. The inline 6 does not need a counter weight on a balancer. They are there to balance the balancer itself. Hole count nor position doesn't matter. It would be advised to have the balance of it checked by the machine shop.

[amceaglesx4]

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