Engine Weights??????
BILL,
You're right! The manufactures use whatever suits THEIR purpose. and of course that's whatever makes their engines stand out above the others.
We need to do it here! (hint hint RCUDMIN)
It is something we can use for any size of engine. and we all know it could be a forum all of it's own.
I would be willing to help as I can!
RON in NEVADA