Frequently Asked Questions (FAQs)
1. Do I need to change lifters with a new cam?
When installing a new cam, it is necessary to replace the lifters as well. Used lifters may have a wear pattern that affects their performance, preventing them from spinning appropriately.
2. What does a cam kit do?
A cam kit is designed to modify the engine's valve timing. By installing a bigger cam, the intake valve is opened wider, allowing more fuel and air into the cylinder. This results in increased performance and power.
3. Do lifters ride on the camshaft?
Yes, lifters are positioned between the camshaft and the cylinder valves. As the camshaft moves over the top of the lifter, it actuates and temporarily opens the valve. Each valve has its own lifter to ensure proper timing and operation.
4. How do I know if my lifters are worn?
Worn lifters may produce a tapping sound, resembling a quick rhythmic tapping noise. This can occur when the vehicle is cold or hot. If you suspect worn lifters, it is advisable to have them inspected and replaced if necessary.
5. Are engine lifters easy to replace?
Replacing lifters and valves is a complex task best left to professionals. Often, the cylinder head needs to be removed, which affects the engine's timing. Special procedures are required to ensure proper installation and timing.
6. Is it necessary to break in a camshaft?
Yes, it is crucial to break in a new camshaft properly. The first 20 minutes of break-in are critical, as this is when the lifters and cam lobes mate. Specific oils with additives are recommended for camshaft break-in.
7. Does camming a car make it louder?
Yes, installing a cam can make a car louder, especially if it has a noticeable lope. The change in camshaft profile and valve timing can result in a more aggressive exhaust note.
8. What happens when lifters go bad?
When a hydraulic lifter goes bad, it can lead to further damage. The rocker arm, valve tip, and push rod may also be affected. One of the most noticeable symptoms of a faulty lifter is the noise it creates in the engine.