Frequently Asked Questions (FAQs)
1. What is better a high-volume oil pump or a high pressure oil pump?
The choice between a high-volume oil pump and a high-pressure oil pump depends on the specific engine requirements. High-volume oil pumps are preferred for engines with wider bearing clearances and higher mileage, while high-pressure pumps are necessary for racing engines that operate at higher RPMs and require fast oil circulation.
2. What are the three types of oil pumps?
The three types of oil pumps are gear pumps, crescent-type pumps, and rotor-type pumps. Gear pumps can be push-on type or designed with gear or chain drive. Crescent-type pumps are space-saving and located on the control end of the crankshaft. Rotor-type pumps are also used in oil pumping applications.
3. What type of pump is best for oil?
The most commonly used pump for oil applications, including in the oil and gas industry, is the centrifugal pump. Centrifugal pumps feature impellers that rotate to draw in and transfer the medium, providing efficient oil circulation and discharge.
4. Does a high-volume oil pump need more oil?
Yes, a high-volume oil pump moves more oil per revolution due to its larger gears. This type of pump is suitable for performance engines with larger bearing clearances. The increased oil flow helps maintain oil pressure and aids in heat dissipation.
5. What is the best oil pressure for a race engine?
The optimal oil pressure for a race engine depends on various factors. However, a general rule of thumb suggests having 10 PSI of oil pressure for every 1000 RPM to ensure peak performance and engine durability.
6. Why not to use high volume oil pump?
Using a high-volume oil pump does not cause the oil pan to run dry. Issues such as clogged oil drain-back holes and poor oil control are more likely to lead to oil starvation. To prevent this, windage trays and crank scrapers are recommended.
7. Does thicker oil raise or lower oil pressure?
Thicker oil tends to increase oil pressure in a modern engine. When thicker oil is used, it offers more resistance to flow, resulting in higher oil pressure.
8. What is the difference between 3:1 and 5:1 oil pumps?
A 3:1 ratio oil pump is ideal for pumping low to medium viscosity fluids over distances of approximately 45m. In contrast, a 5:1 ratio oil pump is suitable for pumping medium to heavier viscosities over longer distances of 60m or more.
9. What are the two most common types of engine oil pumps?
The two primary types of engine oil pumps used in automotive wet-sump systems are gear pumps and gear-rotor pumps. Gear pumps are commonly found in engines designed before the 1990s, featuring two spur-type gears in an enclosed housing.