Technical Missing Weight on Buick Aluminum Finned Brake Drum

I picked up a pair of Buick brake drums with backing plates a few weeks ago. They were discounted quite a bit because the seller had dropped one and broke one of the fins. My machine shop has a good tig person working and said he could fix it. One thing I noticed was that the seel balance weight is missing. Can these be bought or do you just make one and hope for the best? I am going to have them drilled for a 5 on 5 1/2 bolt pattern.

 

Using different hubs for the conversion? Cutting the inner lip for clearance on Ford brakes? These things would mess up the balance anyway and you should rebalance it.

 

I put my drums on a simple bubble tire balancer. I tinkered, and trimmed a small piece of metal, and screwed it on. Simple.

 

I have the fake finned Buick drums, but I'd guess they weigh around 9 pounds +/- each.
I took them to my tire guy, he put them on the spin balancer. He used the current plastic(?) peel and stick weights where they aren't visible.

 

I think a lot of the time the weights were removed due to wheel interference.

 

@pprather He used the current plastic(?) peel and stick weights where they aren't visible. I hope not on the inside.

 

I've run into drums that someone knocked the weight off to clear a certain "mag" wheel. Eacj time it was obvious that someone had recently knocked the weights off as the spot the weight had been on wasn't rusted yet.
I've used an on the car spin balancer to get a lot of cars with vibration issues squared away after they checked out spot on on the off the car spin balancer or bubble balancer in a lot of cases because the drums were a tad out of balance. That much weight missing would call for adding a lot of weight on the wheel though.

I'd do as the others suggested and have somone put it on a spin wheel balancer or on a bubble balancer to figure out how much weight it needs,

 

Thanks guys. All good information.