18 Liter
Specs
Model Number 18 Liter Combustion System Spark-ignited Cooling System Water-cooled Displacement 1,115 cid (18,275 cc) Compression Ratio 10.5:1 Bore & Stroke 5.04 in x 5.59 in (128 mm x 142 mm) Fuel Type NATURAL GAS (NG), PROPANE (LP) Direction of Rotation Anti-clockwise viewed on flywheel