The P3 microengine is a MEMS-based engine fabricated with standard microfabrication techniques. The microengine has several advantages. It can utilize heat over a wide range of temperatures to produce power. The use of batch microfabrication opens the possibility of inexpensive manufacture. In this work we demonstrate the integration of a Swiss roll type heat recirculating microcombustor with the external combustion MEMS heat engine. The Swiss roll combustor utilizes the high energy density of hydrocarbon fuels in order to provide the necessary heat transfer required to power the engine. The overall feasibility of this integration as well as the results of this endeavor will be explored.