4 Vane Vacuum Pump For Dry Sump Oiling Systems

The 4 Vane Vacuum Pump for Dry Sump Oiling Systems by MOROSO is purpose-built for high-performance engines running dry sump lubrication setups, where traditional splash oiling cannot meet demand. Dry sump systems rely on a vacuum pump to extract oil from the pan and return it to the reservoir, enabling greater engine bay packaging flexibility, improved oil cooling, and consistent oil delivery under extreme acceleration and cornering. This compact unit is essential for bracket racers, road racers, and engine builders who demand reliable oil scavenging without the weight penalty or complexity of belt-driven alternatives.

MOROSO's 4-vane design utilizes a rotating vane mechanism housed in a precision-machined aluminum body, delivering consistent displacement and minimal pulsation across a wide RPM range. The multi-vane configuration generates superior vacuum efficiency compared to gear-type pumps, allowing faster oil evacuation from the sump while reducing parasitic drag on the engine. With a compact footprint measuring 7.7 x 7.4 x 8 inches and a lightweight 5.05-pound construction, this pump integrates cleanly into tight engine compartments typical of modified street and race vehicles. The pump features internal check valves and sealed bearing surfaces to prevent oil backflow and extend operational life under sustained high-RPM duty.

This vacuum pump suits builders transitioning to dry sump systems on small-block and mid-size engines, particularly in competitive autocross, road racing, and high-boost forced-induction platforms where conventional wet-sump oiling proves inadequate. Installation requires mounting to the accessory drive or a custom bracket, coupled with proper plumbing to the pan and scavenge lines. Verify pump displacement and mounting configuration against your specific dry sump kit specifications before ordering; compatibility depends on engine block design and existing pan layout.