[SAJ]

I agree with Wensum and Dave in MN. Much of the clatter in my aluminium timing gear was reduced. But not all. As Pete says the balancer could do with being heavier but there is not much room.
In our 31Tudor a belt could possibly be finagled though the gap, but no way would one fit through on our 30 roadster. So I carry a segmented spare belt on this one.
The Tudor had almost subliminal crank torsional wind-up noises to my old ears. Almost gone with the harmonic balancer pulley. Passengers cannot hear anything but years of driving Model A's let me sense the crankshaft vibes as they come and go through certain rev ranges. Or maybe the tinnitus and crickets in my ears is fooling me!!
SAJ in NZ