Quote:
Originally Posted by BALISTC
What harmonic balancer?
No such thing.. the only thing close is the crank pulley, and I've never heard of one of those going out of balance.. they're a solid steel pulley.
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Sorry Joe but OEM the front crank pulley is a 2 piece pulley with rubber between the inner & outers, so yes the stock pulley is a harmonic balancer as such. It's designed to reduce vehicle NVH at low rpms.
I've got a solid under drive crank pulley on my current motor but the crank, flywheel & solid crank pulley were dynamically balance as an Assembly when my motor was built.
O.P. A simple solution would be to purchase an under drive pulley set to suit your 257 (Ebay or where ever), the installation is very simple - just be sure the pulleys come with the drive belts.