Rotating assembly fully balanced have new crank now. Do they need pistons/rods again?

[Toni]

I got my rotating assembly balanced and I received weight info for the pistons/rod assemblies. Now I got a new crank (decided to bite the bullet and go for a forged crank instead of a cast turned). Do they need the rods/pistons etc again?

I thought I saw on one of car shows where they bolted on these weight bobs in place of the pistons/rods so all they need to know is the weight of each.

Thanks
-Antoni

[ajimmyjammin]

all machine shop should need is the new crank along with the balance sheet to work from.

[Toni]

Originally Posted by ajimmyjammin

all machine shop should need is the new crank along with the balance sheet to work from.

Thanks,

That's what I figured since I can't think of a safe (to the parts) way to bolt up the assembly and spin it on a balencer.