kenewagner
Registered User
Does replacing an existing steel crank pully with a Alum one require that the alum one be balanced? I still have the stock balancer.
Ken
Ken
I assume that you're talking about the alum. pulley ONLY, and not the whole rotating assy. (Crank, Rods, Pistons, Flywheel, Balancer, & new alum. pulley)?kenewagner said:Does replacing an existing steel crank pully with a Alum one require that the alum one be balanced? I still have the stock balancer.
Ken
Your statement implies that all aftermarket crank pulleys are made WRONG or BADLY?90coug said:You might be able to get away with it but I wouldn't risk it, get it balanced and know it's done right.
No. As others have stated, you just bolt it on and go.kenewagner said:Does replacing an existing steel crank pully with a Alum one require that the alum one be balanced? I still have the stock balancer.
In the "early days" Bill Hull made a mistake and assumed they were balanced as a unit (probably because Ford sold them together as a unit).
That stock steel pulley IS heavy isn't it! Installing a lighter aluminum pulley has got to help take some of the strain off of the harmonic balancer, even if it's only stock diameter (no underdriving). Because our OEM dampers are somewhat weak, I believe everyone should get an aluminum version for this reason alone.DamonSlowpokeBaumann said:Thats good to know. But makes you wonder though. I assume they had to dynamically balance teh motor after installation fo that pulley because its a bahemuth!