How to Properly Break in New Lifters on Used Cam

To break in new lifters on used cam, use a good quality engine oil, start the engine and gradually increase the rpm until it reaches 2,500 rpm for 30 minutes. After that, decrease the rpm to 2,000 and run for another 30 minutes.

Breaking in new lifters on a used cam is an essential process that ensures proper engine performance. It involves using a good quality engine oil and gradually increasing the rpm until it reaches 2,500 rpm for 30 minutes. After that, the rpm should be reduced to 2,000 and running for another 30 minutes.

This process is necessary in order to achieve the best results and prepare the engine for smooth operation. In this article, we will guide you through the process of breaking in new lifters on a used cam.

How to Properly Break in New Lifters on Used Cam



Breaking in new lifters on a used cam is a critical process that should not be neglected. This process guarantees optimal performance and durability of your engine. Moreover, failing to break in new lifters can result in costly engine damage and failures.

The process involves gradually increasing rpms, avoiding full-throttle acceleration, and allowing time for parts to settle and wear together. Patience and careful attention to details are necessary to ensure that your engine operates smoothly and efficiently. It is important to follow the manufacturer’s recommendations for break-in procedures, which may vary depending on the type of engine and camshaft used.

By properly breaking in your new lifters, you can enjoy optimal engine performance and longevity.

What Are Lifters And Cams?

Lifters and cams are key components of an engine’s valve train. Lifters, also known as tappets, are responsible for opening and closing the engine valves. Cams, on the other hand, are mechanical devices that rotate to push the lifters up and down.

There are several types of lifters and cams, including hydraulic, solid, roller, and mushroom lifters. The type of lifter used in an engine can have a significant impact on engine performance. Similarly, there are various types of camshafts, such as flat, hydraulic, and solid.

Each type of camshaft has its own unique characteristics and is chosen depending on the specific needs of the engine. Properly breaking in new lifters on a used cam is essential for engine longevity and performance.

The Importance of Pumping up your Lifters

Why Do You Need To Break In New Lifters On Used Cam?

Breaking in new lifters on used cam is crucial for optimum engine durability. The cam’s surface has micro-ridges that seat to the lifters. During usage, these grooves are worn out, which is an expected part of it. Hence, when new lifters are installed, they do not align well with the cam lobes.

The correct seat comes from the process of breaking them in for several hours. If you skip this process or carry it out poorly, it may cause permanent damage to the engine. Most notably, it can lead to lifters to collapse, bend push rods, and reduce the life of the camshaft.

Properly breaking in new lifters on used cam is crucial for maintaining engine longevity, hence professional help is highly recommended.

How To Break In New Lifters On Used Cam:

Breaking in new lifters on a used cam is important to ensure the longevity of the engine. Before beginning the break-in process, it’s important to prepare the engine by checking the oil and making sure the cam and lifters are properly lubricated.

The break-in process generally lasts for 20-30 minutes, during which time the engine should be run at varying rpms. After the process is complete, it’s important to change the oil and filter to remove any debris. It’s also recommended to avoid heavy loads and high rpms for the first 500 miles.

Tips for a successful break-in include checking the timing, using high-quality oil, and monitoring oil pressure and temperature. By following these steps, you can ensure that your engine runs smoothly for years to come.


It’s critical to break in new lifters on a used cam to ensure they perform optimally. This process is especially important when dealing with high-performance engines. Through the use of proper oil, speed, and duration, your lifters will be primed for their future workload.

Ultimately, breaking in new lifters on a used cam reduces the chances of catastrophic engine failure. Completing the task of breaking in your lifters properly is crucial for any engine. To that end, this article focused on a recap of its importance.

Take time to make sure you’re following the right technique for making your lifters function optimally, and you’ll enjoy excellent engine performance for a long time.

Frequently Asked Questions For How To Break In New Lifters On Used Cam

How Do I Know If My Lifters Need Breaking In?

New lifters with high spring rates will need a break in period to settle. Listen for any abnormal noise.

How Long Does It Take To Break In Lifters?

Typically it takes two or three heat cycles to successfully break in new lifters. Be patient and don’t rush it.

What’S The Best Way To Break In Lifters?

Start with a warm-up, vary engine speed and avoid constant rpms. Make sure to use proper lubricants and oil.


As you can see, breaking in new lifters on used cam isn’t as intimidating as it may seem at first. Following the proper steps and taking your time will ensure that your engine runs smoothly and efficiently. Remember to check for proper oil pressure, use the right oil viscosity and add additional additives if necessary.

It’s also important to give the lifters ample time to break in before applying full load. Keep in mind that using a used camshaft can come with its own set of challenges, so be sure to inspect it thoroughly before installation.

Lastly, don’t forget to document everything you do during the break-in process, this can help with troubleshooting any future issues. Follow these steps, and your new lifters and used camshaft should last for years to come.