Dear sir,
I am mechanical engineer, understanding the part of internal combustion engines so good, and already working on a task of the whole vehicle calculations, " getting the formulas and substitute in it for getting actual results", such as the brake power, volumetric efficiency which you need for your new engine calculations.
the solidworks, autocad, and FEA i am familiar with enough to do your task
would like to hear from you, if you have any questions to me,
Thanks