Which balancer?

SSG_Karg said
Update:
So I pulled the trigger on the Chinese Fluidamper from eBay. It arrived today and although very poorly packaged for its weight, it seems to be without damage. I can’t tell if it is powder coated or painted. The numbers and lines feel like they were lasered on since I can catch my fingernail on the lines.
The pulley bolt holes are 5/16 fine thread and it weighs a portly 13.8 lbs according to my scale. It says Speedmaster on it.
Taking my rotating assembly to the machine shop later this week for balancing. I’ll report back with the machinists thoughts on fit and finish.

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If you are going to internally balance, do NOT put the damper on the crank. Your machinist should know this, but some don't.

If you are going to externally balance, there should be a weight in the box with the damper. Use that weight. But never put the damper on the crank to balance.

Also, make damn sure the machinist measures the crank snout, and then the bore of the damper and make sure the press fit is whatever it says on the paperwork. Should be something like .0007-.0012 or close to that. Mine came with .0035 on it. If you don't hone the damper go fit, it will fail.