[chickenbot]

http://store.summitracing.com/partdetail.asp?autofilter=1∂=SUM%2DC4270&N=700+429 4839044+4294924929+4294908331+4294908282+429484012 6+4294871851+4294907673+4294871826+4294871848+115& autoview=sku

that is the hb that i bought and i put it on today and matched the key and imbalance as the one that i took off with the moveable counter weight.. well it also came with this sleeve that idk where it goes and it still vibrates like crazy.. but the old one was horrible so it needed to be replace.. im gonna try to go tomorrow and move the counter weight around.. also when i moved the weight it only had 1 screw hole that i could match up to instead of the 2 that it needed.. and when i was bolting the pulley back on it i had to get longer screws due to the size diff.. but i had to cut 2 screws in half to make them fit b/c of the counter weight.. any ideas?

[chickenbot]

does anyone know anything about harmonic balancers

[chickenbot]

do i need a 50 or 28 oz

[nolife]

Originally Posted by chickenbot does anyone know anything about harmonic balancers

Not the one you bought

I read the instructions that Summit provides with that model. Looks straight forward. Did you heat the HB in boiling water or the oven first? My guess is maybe the HB did not seat fully on the crank, that may have been why some of your bolts did not seem to work. According to the directions, you should not touch the weights, with the weights in place, it should be for 50oz.