At 07:13 AM 12/02/1999 -0600, you wrote:
>Hi Bulley,
>    I couldn't agree more.   I feel that balancing will probably pay for
>itself in  fuel savings and they are so smooth.

>Darrell Boehler
>
>Bulley says about balanced engines
>
>> Good luck, it is the best money you will spend when rebuilding.
>>
>> G. Matthew Bulley

My 912 Porsche will idle cold, no chokes, at less than 300 rpm. This is due
to precise adjustments certainly, but could not happen without precise
balance. It runs so smooth it is scarry. A very large benefit of balancing
is the elimination of extraneous harmonics which create and propogate
cracks from stress risers. Balancing relates not only to rotating and
reciprocating parts. It also shows benefits in matched combustion chamber
volume, matched port flow and balanced assembly processes like, three or
more torque stages when tightening the heads left to right to pull them in
together without setting up case stresses from uneven strain, and massaging
the case halves to balance bearing clearances, as a few examples of refined
procedures.

Doktor Tim
Maintenance Repair and Restoration of European Vehicles
San Juan Island, WA