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Re: engine balancing

To: british-cars@autox.team.net
Subject: Re: engine balancing
From: William Hartwell Woodruff <woodruff@engin.umich.edu>
Date: Tue, 09 Nov 1993 18:36:57 -0500
>>match the lightest one.  Rods are end balanced: the big end is set on a 
>fulcrum 
>>and the small end is set on a scale.  Again, all the small ends are lightened 
>to
>>match the lightest small end.  Repeat with the small end on the fulcrum and 
>the 
>>big end on the weight.

        This is done because only a portion of the connecting rod weight 
contributes
to the rotating mass of the engine.  The connecting rods undergo both rotation 
and
translation as the crank spins.  Unless, of course, you have a MGB with poor 
oiling at
high rpm, then your connecting rod might decide translation is good enough and 
find 
its way through your block.

woodruff@caen.engin.umich.edu


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