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ID:	6260Well I took some of your suggestions and made some changes to my model.  I staggard the cylinders, increased the stroke a bit, made the intake ports longer than the exhast ports, and completely redesigned the crankshaft and crancase, including some counter weights.  I still need to redo the manifolds and induction system as well as add injectors and systems for cooling and oiling.  I wonder if one could design the lubrication and cooling systems as one system.  As in oil cooling, running the oil through a radiator and such.