Fox Harmonic balancer questions

Are you doing engine work where the rotating assemble will be dismantled? If so I recommend having the individual components of the rotating assembly balanced. They weigh each connecting rod and shave them all down to the same weight as the lightest one and balance by shaving weight from each rod end. They weigh all pistons and determine the lightest one then remove material from the others so they all weigh exactly the same. They assemble the crank with balancer and flywheel and and balance that separately. In the end you get a very well balanced assembly that can spin at much higher rpm and survive.

It will free up power otherwise lost to imbalance. If you're doing even a moderately serious rebuild, I can't imaging not taking these extra steps. Worth every penny it cost me. $75 is what I paid extra for these tasks and to me that seems low.

You have a stock engine, you don’t need anything more than the stock replacement

Race dampers are made with various designs so they wont come apart under the rigors of racing. That's mostly what makes them more expensive. Bad harmonics are from imbalance components within the rotating assembly. If any damper does it's job it will soften the vibration and loss of poor balancing. But, the expensive ones will always stay together. In any event, you can't expect an expensive one (or a cheap one) to cancel out the losses of a poorly balanced rotating assembly.

deathb4dismount said:

You have a stock engine, you don’t need anything more than the stock replacement

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I absolutely agree,stock motor only needs stock balancer.