Plastic VS Aluminum Valve Cover : Which is better for you?
Choosing between plastic vs aluminum valve cover can be challenging. Both are common options, each with unique advantages and disadvantages. An experienced engine valve cover manufacturer will thoroughly analyse the differences between the two to help you determine which one is best suited for your vehicle.
Key Features: Quick Overview
What is an engine valve cover? And how to spot trouble? The engine valve cover is used to protect the engine’s valve mechanism. It seals the engine oil to prevent oil leaks. At the same time, it also prevents dust and debris from entering the engine. This component is an indispensable part of the engine’s normal operation. When your engine experiences oil leaking, faulty ignition, odours, or low fluid levels, it may be a sign of a problem with the valve cover.
Plastic VS Aluminum Valve Cover: Major Differences
| Feature | Plastic Engine Valve Cover | Aluminum Engine Valve Cover |
|---|---|---|
| Durability | Becomes brittle and cracks easily. | Extremely durable. |
| Heat Transfer | Poor heat conduction. | Excellent heat conduction. |
| Weight | Light | Heavier |
| Cost | Lower | Higher |
| Integrated Parts | Usually built-in PCV system. | Usually separate components. |
| Longevity | Shorter service life due to thermal cycling. | Extremely long service life. |
Plastic VS Aluminum Valve Cover : What We Offer
When to Choose Plastic Ones
Plastic caps are cheaper to manufacture and are a more economical alternative.
They are very lightweight, which helps reduce the overall weight of the vehicle. Lighter cars are typically more fuel-efficient.
Typically, the PCV system is part of the cap, simplifying the assembly process.
Plastic does not rust and is highly resistant to engine fluids.
When to Choose Aluminum Ones
Aluminum has extremely high strength, enabling it to withstand engine vibrations and high temperatures without cracking.
It can remove heat from the engine, keeping the valve mechanism at a lower temperature. It can also extend the service life of valve cover gaskets.
Aluminum covers have a longer service life than plastic and are not affected by continuous thermal cycling.
Aluminum covers have a premium appearance and can be polished or coated, enhancing the overall aesthetic appeal of the engine compartment.
Common Questions and Solutions
| Problem | Plastic Engine Valve Cover | Aluminum Engine Valve Cover |
|---|---|---|
| Oil Leaks | Common. Caused by cracks or a brittle gasket. | Less common. Usually a failed gasket. |
| Repair | Cracks cannot be repaired. | Replacing a simple gasket can solve the problem. |
| Installation | Easy to crack if over-torqued. | Overtightening can strip threads. |
| Failure | Becomes brittle and cracks from heat. | The gasket fails from heat and age. |
Plastic VS Aluminum Valve Cover : Make a Final Decision
If you own a modern car, replacing a failed plastic cover with a new plastic valve cover is fine. It is an affordable and direct replacement.
If you want a permanent solution, an aluminum valve cover is the better choice. It is more durable and handles heat better. This is especially true for performance engines.
- When you really don’t know how to make a choice, let your engine valve cover supplier make the choice for you. They are professionals and can quickly find the right product for your engine.
You May Also Want To Read:
Light and Strong What a Magnesium Engine Valve Cover Offers
When is Valve Cover Coating Necessary?
Contact Us Now
- RM901 No.22 Tangjiaqiao Road Wenzhou China
- +86 138 1973 9327
- sales@kstmetal.com
- https://www.autosparesupplier.com/
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