Opel diesel straight-4 2.5 L 4 JA1T engines

Opel diesel straight-4 2.5 L 4 JA1T 75 HP at 3800 RPM, 160 N⋅m at 2100 RPM engine

It's an 2499 cc (2.2 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 93 mm × 92 mm (3.66 in × 3.62 in). This engine was rated 56 kW (75.1 hp) at 3800 rpm and 160 N⋅m (118.01 lbf⋅ft) of torque at 2100 rpm.