20 Liter
Specs
Model Number 20 Liter Combustion System Spark-ignited Cooling System Water-cooled Displacement 1196 cid (19,600 cc) Compression Ratio 10.5:1 Bore & Stroke 5.90 in x 7.30 in (150 mm x 185 mm) Fuel Type NATURAL GAS (NG), PROPANE (LP) Direction of Rotation Counter-clockwise viewed on flywheel