The Cummins QSM11 Marine Engine Story

Time for some QSM11 education.  As you read thru the below, always associate or think this—It’s 20 HP per gallon per hour—example = burn 17.5 GPH = 350 HP that is being asked from the engine – and that is … Read More

Removing and Installing the QSM11 Exhaust Manifold

Removal: Remove the heat shield mounting capscrews. Remove the heat shield. Remove the insulation blanket mounting capscrews. Remove the insulation blanket. Remove an upper capscrew and spacer from each end of the exhaust  manifold  and install guide studs, Part Number 3376488. Remove … Read More

Propping the Cummins Marine QSM 11 to Prevent Exhaust Issues

The Symptoms The QSM11 marine engine is in a class of its own due to the fact that it is still equipped with both a DRY exhaust manifold and a DRY turbo. Dry meaning that those components, unlike others in … Read More