Opel diesel straight-4 1.7 L Z 17 DTH engines

Opel diesel straight-4 1.7 L Z 17 DTH 99 HP at 4400 RPM, 240 N⋅m at 2300 RPM engine

It's an 1686 cc (1.48 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 79 mm × 86 mm (3.11 in × 3.39 in). This engine was rated 74 kW (99.24 hp) at 4400 rpm and 240 N⋅m (177.01 lbf⋅ft) of torque at 2300 rpm.