Here is Ronald Valentine's first diesel engine. It is partially made of parts from the Taifun Standard 2.5 diesel engine (bottom picture). Unfortunately there is no better picture available.
Technical Data :
Bore 15.0 mm
Stroke 14.0 mm
Rpm 14,000 rpm
Total combustion 2.48 ccm
Weight 80 gram
Intake Front Rotary
Price $160.00