Reply to "Flywheel?"

panteradougMember

I have enough experience now that when I build a new engine the person that is to do the balancing is told "DO NOT TOUCH THE FLYWHEEL AND HARMONIC BALANCER".

IF you don't then they will take weight off rather than add Mallory metal to the assembly.

So far, that has never been necessary, although I am constantly "threatened" with that.

The entire point of this is that your balancer and flywheel should be replaceable at any time with a new unit. PERIOD.

Chances are though that on a 351 Cleveland (not a stroker) that you can change it and IF there is a slight imbalance it won't even show until high RPM's (over 7,000).

The Cleveland characteristics have it develope vibration (engine harmonics) at 6,000rpm and up.

The way you fix that is to add a balancer with more mass, i.e., the "boss/HO" balancer.

It's so effective at smoothing the engine, that it feels like it took 20 degrees off of the camshaft duration.

4/29/155:00 PM

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