mountune Honda K20C1 Ported/High Pressure Oil Pump

Starting with a new genuine Honda oil pump, we disassemble and inspect the components to ensure the base parts are within specification. Then each inner and outer pump rotor set receives WPC surface treatment to improve the surface finish allowing the pump to operate more efficiently. Each pump housing is CNC ported on the inlet and discharge passages to ensure smooth and efficient oil flow through the pump. Our technicians then assemble the components and set the PRV adjustment to specification.

This graph shows the stock Honda K20C1 oil pump's pressure versus the Mountune Ported & High-Pressure pump. The pump has been configured for a modest 3% increase in pressure at high RPM but produces approximately 5% more pressure at 3000 RPM. This is right at the engine's peak torque, where bearing loading is the greatest and extra oil pressure is the most critical.


This graph shows the power it takes to spin the oil pump across the RPM range. These power figures are derived from Mountune's proprietary oil pump test bench 10HP electric motor's current consumption. This graph shows that even though the Mountune pump is generating a higher oil pressure, the actual power required to drive the pump is about 2.5% less than stock. This is due to the ported oil flow passageways and WPC-treated pumping internals maximizing the pump's efficiency. Less power to drive the oil pump means more power to the wheels. While the actual horsepower increase may be difficult to notice at the wheels, less horsepower to drive the pump also means less work being put into the fluid (i.e. heat into the oil). The result is lower oil temperature and decreased loading on the vehicle's cooling system, all with an increase in engine durability and performance.