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Re: Piston Balancing

To: IfixMGs@aol.com, Spridgets List <spridgets@autox.team.net>
Subject: Re: Piston Balancing
Date: Tue, 16 Jan 2001 21:16:54 -0600
References: <7d.fa82487.27965ae1@aol.com>
For all of the comments it leads me to believe that I should be careful as to
which side of the rod I remove material from, so as to not throw the crank out 
of
balance. Perhaps I should just put it together as it is and tell my daughter 
that
when she breaks it she is just gonna be out a car. She is only 5 blocks from
school so I would make her go back to walking. She is just looking forward to
being able to drive one of those "cool cars" that her friends say her parents
drive.

IfixMGs@aol.com wrote:

> Brad,
>     best non-dynamic balance compromise is simply find the lightest piston
> and carefully lighten the rest to match within a gram or two;  next, find the
> lightest rod and repeat.     I find that it contributes to a far  smoother
> running engine at hi revs , esp if you are running a hotter cam. On the
> vintage racer engine, I also  have the big/little  ends checked for true and
> concentricity, and shot peen the rods;  have all the valve springs checked
> for close to equal (+- 5 pounds) compression at .400" lift equivalent x
> rocker ratio. When all the springs have equal compression there are far less
> non-linear parasitic loads on the cam.   Lastly, make sure the crank pulley
> is true. Since it is not a harmonic dampener, any runout will negate a lot of
> the other efforts - same with the flywheel.
>              Mark

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