I have been developing this engine for a couple of years. Here is a link to download the plans. It has potential.
Download- http://www.mediafire.com/download/hdbcbnj9d2f8sdc/Thermal_lag_engine_plans.zip
Video- http://youtu.be/tXbXcl8yb0c
http://youtu.be/ZjNDsxsGRqM