ty_ty13

iTrader: (42)

how much does it usually cost to have a motor balanced?

Beast96Z

iTrader: (21)

HPE charged me $150 on my invoice.

Flyer

iTrader: (1)

TSP quoted me 225 flat.

Local guy that does a lot of pro stock engine building and blown alcohol stuff quoted me 200 + mallory if needed to balance to NASCAR specs.

Another local quoted 180 + mallory if needed, he's prolly more budget minded.

I'll prolly go with the pro stock dood.

98NBMZ

iTrader: (6)

cost me 150 locally.

whats the mallory anyways?

Flyer

iTrader: (1)

Some kind of super hard metal they add to the crank if it needs more weight in it

SSwanner

iTrader: (128)

yea, mallory metal is pretty expensive.

i paid $210 for mine to be balanced and the crank polished, from Tony Barker in MS.

xaon

iTrader: (12)

Mallory metal, also referred to as heavy metal, is approximately 2.33 times heavier than steel. It is used to add mass to the counterweights of the crank to allow the crank to be properly internally balanced. It is used in the place of lead because it is much less labor intensive, however the cost of the material is exceedingly higher. Typically, no more than about $50-100 worth of mallory needs to be used.

Robinator

iTrader: (1)

does this allow you to spin the motor into higher rpms? Or does this just give you peace of mind at 6500 rpms it wont go out of whack?

Beast96Z

iTrader: (21)

All rotating assemballies have to be balanced. If not there will be more weight in one place or another and cause vibration, which will ruin all your bearings and cause you motor to be worthless. In simplest terms, think of having your tires balanced. It's round and it spins. If it isn't balanced, you'll have vibrations. Now multiply the rpm that unbalanced tire sees to meet the revolutions a motor see's, and you'll probablly shread the tire from the rim.

98NBMZ

iTrader: (6)

Thanks for the clarification. Being a machinist, I know it as heavy metal. We use it all the time and a lot of our tooling is made from it.

Robinator

iTrader: (1)

No, I already know about all the balancing stuff. I thought you guys were getting them balanced more true than what the factory might have given you. For example, my spec stage 3 came balanced from the factory but it still wasnt zeroed out because the balancing machine told us otherwise.