The renowned Enya company of Tokyo, Japan is best known to classic model diesel engine enthusiasts for its ground-breaking 2.5 cc D15-I and 15D-II models which enjoyed a very successful decade of production from 1956 to 1965. However, these were not the only diesels produced by the company during the classic era. Beginning in 1959, Enya released a series of 0.06 cuin (1 cc) diesels of very different design. These cute little diesels are far less well-known than their bigger brothers because their sales were largely confined to the Japanese domestic market as well as those of neighbouring Asian countries. 

The series was initiated in 1958 with a reed valve glow-plug model owing much to the Cox reed valve models then very much in vogue. A diesel version was developed in 1959. This survived in production until late 1964, when a comprehensively revised model featuring crankshaft front rotary valve (FRV) induction replaced the reed valve model. This change appears to have been motivated by a desire to improve the engine's ability to operate effectively with an R/C throttle. It did however develop more power as a bonus. Both diesel and glow-plug variants remained in production until the early 1980's. 

A certain amount of information on these models is included in my article on the Enya 2.5 cc diesels. However, a more comprehensive review and test of the Enya .06 diesels will appear on this website in due course.