Aircraft engine: PZInż. Junior (licenced Walter Junior)
|Configuration||4-cylinder inverted inline|
|Displacement||5.8 l (354 cu in)|
|Weight||148 kg (326 lb)|
|Maximum power||120 hp at 2300 RPM|
|Climb power||110 hp at 2100 RPM|
PZInż. Junior engines were manufactured by Polish aviation industry between 1934 and 1939 for use in training and liaison aircraft RWD‑8. Production was begun at Państwowe Zakłady Inżynierii (National Engineering Works) in Czechowice-Ursus on licence from the Czechoslovak engine manufacturer Walter. In 1939 production of the Junior was transferred to PZL WS-2 in Rzeszów (National Aviation Works, Engine Factory no. 2; the factory was a part of a major pre-war Polish industrial project, the Central Industrial District). Altogether over 600 examples were built.