PZ_Inż._Junior
Walter Junior
1930s Czech piston aircraft engine
The Walter Junior was a family of four cylinder air cooled inverted inline engines produced by Walter Aircraft Engines in Czechoslovakia in the 1930s for aircraft, characterised by a bore and stroke of 115 mm × 140 mm (4.53 in × 5.51 in), a displacement of 5,814 cm3 (354.8 cu in) and producing roughly 78 kW (105 hp).
The Junior was also built in Poland as the P.Z. Inż. Junior.[1]