L844D 30 / 40 HP
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The L844D uses a gear-type, high capacity oil pump with a lube oil cooler and a full ow ltration system. This technology lters particles large and small from the oil ow in a single unit. Northern Lights is so dedicated to the principals of customization and ease of use, that the L844D comes available with left or right handed dipsticks. > Lubrication System > HORSEPOWER Air System The L844D is designed to meet US EPA Tier II emission standards. Its air and ventilation systems are built to run as ef ciency and cleanly as possible. The closed circuit crankcase vent traps oil vapors to keep the engine room and environment clean. The cast-iron wet exhaust elbow is unique in the marketplace and comes standard. > 4 9 2 8 10 1 3 11 6 4 7 5 The L844D combines the tradition of Northern Lights engineering excellence with the advances of modern technology. The fuel system is mechanically controlled, allowing for smooth, ef cient horsepower in a package that that is easy to understand and service. Fuel System 5. Gear driven, rubber impeller, seawater pump. Bronze and stainless steel. No belt. Mechanical seals.6. Spin-on oil & fuel lters. 7. Oil drain for quick changes. 8. Removable heat exchanger end covers for easy core cleaning. 1. Coolant expansion bottle keeps engine room clean and dry. 2. Cast air intake manifold with washable air lter/silencer reduces air intake noise. Crankcase oil vapor trap for clean air.3. Bosch type inline injection pump. 4. Top & side oil lls. 9. Jacket water cooled with one piece, cast iron expansion tank and exhaust manifold with removable cupro-nickel heat exchanger core.10. Cast iron wet exhaust elbow w/ temp switch. 11. 12 volt DC starter and battery charging alternator. Northern Lights engineering has produced an engine with a minimal amount of leak or breakage points. This leads to a cooling system that is uniquely designed for the rigors of the marine environment. Reliable and ef cient cooling is built in to the L844D, thanks to its single-piece cast iron exhaust manifold. Cooling System > As a base engine in a small vessel, or a wing engine in a larger one, the L844D is built to be driven hard over the long haul. Electrical System The standard L844D electrical system is a technological standard-bearer, with a 12 volt isolated ground system standard, and 24 volt available as an option. The battery charging alternator and starter come standard, as does the control panel featuring tachometer, hourmeter, coolant temperature meter, DC voltage meter, oil pressure gauge and key switch. >

Output rating Medium Performance > Maximum RPM 2400 2800 Cylinders/Con guration/Cycle 4 / Inline / 4 Displacement CID (ltr) 121 (1.9) Aspiration Natural Bore x Stroke in (mm) 3.30 x 3.50 (84 x 90) Cooling > (General) Coolant circ pump ow - US gpm (lpm) 14.2 (54) 20.1 (76) Heat rejection to jacket water - BTU-min 1176 1567 Freshwater system capacity - US gal (ltr) 1.4 (5.3) Cooling > (Heat Exchanger) Raw water intake dia. - in (mm) 75 (19) Raw water discharge dia. - in (mm) 75 (19) Raw water pump ow - gpm (lpm) 10.2 (39) Raw water pump max. suction head - in (m) 39 (1) Max. raw water temp....