polarman said

Alright folks, here we go with silly questions from polarman again. So I installed the harmonic damper on my new BPC4083CT engine the other day. I pulled the crank pulley from the old 318 and took it to work to paint it up. I got home to install it, and no matter how I clock it, all 6 bolt holes will not line up. In some positions, 4 holes will line up, and in other positions 5 holes will line up. The harmonic damper is a Powerforce with the appropriate weight for the externally balanced 360 that the engine builder recommends (this particular damper was recommended by Summit over the phone). So my questions are- is this a parts compatibility issue that I overlooked, or is it a manufacturer defect and they missed the mark on one of the holes in the harmonic damper? An easy fix would be to elongate one hole in the pulley, but I wonder if that would negatively affect the balance of the rotating assembly. Please quell my curiosity and let me know what you think. Pics to follow momentarily...

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