Harmonic balancer vs plain pulley om 3 main engine

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rhythmrider
Posts: 89
Joined: Mon Sep 02, 2013 6:58 pm

Harmonic balancer vs plain pulley om 3 main engine

Post by rhythmrider » Sun Oct 06, 2013 4:49 am

My old three main 1592 does not have a harmonic balancer. It's just a "plain old pulley".
In reviewing the engine I looked at the pulley and the keyway is damaged. It's about double the correct size from wear. (probably from not being properly tightened at some time in it's life.)

Will a 1725 5 main harmonic balancer work as a direct replacement for the damaged "pain old pulley" ?
Is the pulley diameter and belt offset the same?

-Dana

thowman
Posts: 79
Joined: Mon May 24, 2010 9:31 pm

Re: Harmonic balancer vs plain pulley om 3 main engine

Post by thowman » Tue Oct 08, 2013 7:46 am

It will fit as the cranks are the same. Not sure about the diameter difference, but I have used one on a cast iron engine before without any issues.

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