This is a low speed version of our four cylinder (max. only 2.600 rpm) and aimed at uses aboard small motor cruisers or Dutch sloeps, where greatest silence in operation is desired. At cruising speeds, 2000 rpm will hardly be exceeded although the base engine is designed for up to 4.800 rpm. As a result, the noisiest emission of an SDI 40-4 in a careful installation will often be the cooling water flow from the exhaust!
Easily meets EU standards and all expected future emission standards for marine engines.
Engine Performance
Referenceboats
