Upgrading Your 5.7L HEMI Oil Pump to Avoid Lifter Problems
- fryejs91
- 2 days ago
- 3 min read
The 5.7L HEMI engine is known for its power and reliability, but like any engine, it has its weak points. One common issue that many owners face involves lifter problems, which can lead to noisy operation and even engine damage if left unchecked. A key factor contributing to these lifter issues is the oil pump. Upgrading the oil pump can help prevent these problems and keep your engine running smoothly. This post explains why the oil pump upgrade matters, how it helps, and what options you have.
Why Lifter Problems Occur in the 5.7L HEMI
Lifters in the 5.7L HEMI rely on consistent oil pressure to maintain proper valve operation. When oil pressure drops or fluctuates, lifters can collapse or become noisy. This results in tapping or ticking sounds from the engine, reduced performance, and in severe cases, damage to the valvetrain.
Several factors cause lifter issues:
Oil pump wear: The stock oil pump can wear out over time, reducing its ability to maintain steady oil pressure.
Oil flow restrictions: Deposits or blockages in oil passages reduce flow to lifters.
High engine demands: Performance upgrades or heavy use can increase oil demand beyond what the stock pump can supply.
Upgrading the oil pump addresses the root cause by improving oil delivery and pressure stability.
How Upgrading the Oil Pump Helps
An upgraded oil pump improves the engine’s oiling system in several ways:
Increased oil pressure: A high-performance pump delivers more consistent and higher oil pressure, ensuring lifters receive adequate lubrication.
Improved flow rate: Enhanced flow reduces the chance of oil starvation during high RPM or heavy load conditions.
Better durability: Aftermarket pumps often use stronger materials and tighter tolerances, lasting longer under stress.
By maintaining proper oil pressure, the upgraded pump keeps lifters fully pressurized and functioning quietly. This reduces wear on the valvetrain and extends engine life.
Choosing the Right Oil Pump Upgrade
When selecting an oil pump upgrade for your 5.7L HEMI, consider these factors:
Compatibility: Ensure the pump fits your engine model and year without extensive modifications.
Pressure rating: Look for pumps designed to maintain oil pressure within the recommended range, typically around 40-60 psi at idle and higher at operating RPM.
Material quality: Pumps made from billet aluminum or hardened steel gears offer better longevity.
Brand reputation: Choose products from manufacturers with proven track records in HEMI performance parts.
Some popular options include high-volume oil pumps designed specifically for the 5.7L HEMI. These pumps often come with upgraded gears and housings to improve flow and pressure.
Installation Tips and Considerations
Upgrading the oil pump is a mechanical job that requires some engine disassembly. Here are some tips to ensure a successful upgrade:
Drain the oil: Always drain engine oil before removing the oil pan and pump.
Inspect components: Check the oil pickup tube and screen for debris or damage and replace if needed.
Use new gaskets and seals: Prevent leaks by installing fresh gaskets during reassembly.
Follow torque specs: Tighten bolts to manufacturer specifications to avoid damage.
Prime the pump: Before starting the engine, prime the new pump with oil to prevent dry starts.
If you are not comfortable with engine work, consider professional installation to avoid mistakes.
Additional Maintenance to Support Lifter Health
Upgrading the oil pump is a strong step, but maintaining lifter health also depends on other factors:
Regular oil changes: Use high-quality synthetic oil and change it at recommended intervals to keep oil clean and flowing well.
Use correct oil viscosity: Follow manufacturer recommendations for oil weight to ensure proper lubrication.
Check oil pressure regularly: Use a gauge to monitor oil pressure and catch issues early.
Clean oil passages: Periodically inspect and clean oil passages to prevent blockages.
Address lifter noise early: If you hear ticking sounds, investigate promptly to avoid further damage.
Combining these practices with an upgraded oil pump creates a reliable system that protects your lifters.
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