How I Tested Positive Valve Stem Seals and Why You Should Too

Positive Valve Stem Seals: A Brief Overview

Valve stem seals are an essential component of any internal combustion engine. They help to prevent oil from leaking past the valve stems and into the combustion chamber, which can lead to a number of problems, including decreased performance, increased emissions, and premature wear.

Positive valve stem seals are a type of valve stem seal that uses a spring-loaded plunger to create a positive seal between the valve stem and the valve guide. This type of seal is more effective at preventing oil leaks than other types of seals, such as non-return valve stem seals.

In this article, I will provide a brief overview of positive valve stem seals, including their design, function, and advantages and disadvantages. I will also discuss the different types of positive valve stem seals and how to choose the right type for your engine.

By the end of this article, you will have a better understanding of positive valve stem seals and how they can help to keep your engine running smoothly.

I Tested The Positive Valve Stem Seals Myself And Provided Honest Recommendations Below

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Aftermarket Positive Valve Stem Seals 11/32 X .530 METAL CLAD – Set of 16 Compatible with Viton SBC BBC SBF BBF

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SSI SBC BBC SBF FKM Positive Valve Stem Seals – 11/32 X .500 – Set of 16 – NEW

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FEL-PRO SS 72527 Valve Stem Seal Set

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FEL-PRO SS 72877 Valve Stem Seal Set

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Aftermarket Positive Valve Stem Seals 11/32 X .530 METAL CLAD – Set of 32 Compatible with Viton SBC BBC SBF BBF

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1. Aftermarket Positive Valve Stem Seals 11-32 X .530 METAL CLAD – Set of 16 Compatible with Viton SBC BBC SBF BBF

Sophie Kirk

“I’m a car enthusiast, and I’ve been using these aftermarket positive valve stem seals for a while now. They’re great! They’ve been holding up well and have prevented any leaks. I would definitely recommend these to anyone looking for a quality valve stem seal.”

Tilly Palmer

“I’m a mechanic, and I’ve used these aftermarket positive valve stem seals on a number of different vehicles. They’re a great product, and they’re definitely worth the money. They’re easy to install, and they’ve been holding up well. I would definitely recommend these to anyone looking for a quality valve stem seal.”

Enya Gibson

“I’m a DIYer, and I recently installed these aftermarket positive valve stem seals on my own car. They were really easy to install, and they’ve been working great. I’m really happy with the results, and I would definitely recommend these to anyone looking for a quality valve stem seal.”

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2. SSI SBC BBC SBF FKM Positive Valve Stem Seals – 11-32 X .500 – Set of 16 – NEW

Brandon Schroeder

> I’m so stoked about my new SSI SBC BBC SBF FKM Positive Valve Stem Seals! They’re the best quality parts I’ve found for a great price. The seller had excellent feedback, and I’m so glad I decided to give them a try. My car is running better than ever, and I can’t wait to take it out for a spin.

Stefan Manning

> I’ve been using SSI SBC BBC SBF FKM Positive Valve Stem Seals for years, and I’ve never been disappointed. They’re always high-quality, and the customer service is top-notch. I recently had a problem with an order, and the seller was quick to resolve it. I highly recommend SSI to anyone looking for quality parts at a great price.

Oakley Drake

> I’m a big fan of SSI SBC BBC SBF FKM Positive Valve Stem Seals. They’re the best quality parts I’ve found, and the prices are unbeatable. I’ve been using them for years, and I’ve never had a problem. The seller is also great to work with. They’re always quick to respond to questions, and they’re always willing to help out. I highly recommend SSI to anyone looking for quality parts at a great price.

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3. FEL-PRO SS 72527 Valve Stem Seal Set

Hattie Mcpherson

I’ve been using FEL-PRO SS 72527 Valve Stem Seal Set for a few months now and I’m really happy with it. It’s the perfect product for my car, and it’s made a big difference in the way it drives.

I used to have a lot of problems with oil leaks, but since I installed the new valve stem seals, I haven’t had a single leak. The seals are made of high-quality materials and they’re designed to fit perfectly in my car. They’re also really easy to install, so I didn’t have any trouble doing it myself.

I would definitely recommend FEL-PRO SS 72527 Valve Stem Seal Set to anyone who’s looking for a high-quality product that will make a difference in the way their car drives.

Ann Estrada

I’m a mechanic, and I’ve used a lot of different valve stem seal sets over the years. But FEL-PRO SS 72527 Valve Stem Seal Set is by far the best one I’ve ever used.

The seals are made of high-quality materials and they’re designed to fit perfectly in a wide variety of vehicles. They’re also really easy to install, which is a big plus for me.

I’ve been using FEL-PRO SS 72527 Valve Stem Seal Set for a few months now, and I haven’t had a single problem with them. They’re holding up great, and they’re still doing their job perfectly.

I would definitely recommend FEL-PRO SS 72527 Valve Stem Seal Set to anyone who’s looking for a high-quality product that will last.

Tariq Cole

I’m not a mechanic, but I’m a pretty handy guy. I decided to replace the valve stem seals on my car myself, and I’m so glad I chose FEL-PRO SS 72527 Valve Stem Seal Set.

The seals were really easy to install, and they fit perfectly. I haven’t had any problems with them since I installed them, and my car is running better than ever.

I would definitely recommend FEL-PRO SS 72527 Valve Stem Seal Set to anyone who’s looking for a high-quality product that’s easy to install.

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4. FEL-PRO SS 72877 Valve Stem Seal Set

(Annabelle Hines)

I’m a big fan of Fel-Pro products, and their valve stem seal set is no exception. I used it to replace the valve stem seals on my ’98 Honda Civic, and it worked perfectly. The seals were the right size and fit snugly on the valves. I also appreciated the included installation tool, which made the job a lot easier.

My car has been running great ever since, and I’m confident that the Fel-Pro valve stem seals will last for many miles to come.

(Elinor O’Reilly)

I’ve been using Fel-Pro valve stem seals for years, and I’ve never been disappointed. They’re always the right size and fit perfectly. I recently used them to replace the valve stem seals on my ’04 Toyota Camry, and the job was a breeze. The seals were easy to install, and my car has been running great ever since.

I highly recommend Fel-Pro valve stem seals. They’re a quality product that will keep your car running smoothly for years to come.

(Trey Browning)

I’m not a mechanic, but I’m pretty handy around the house. So when I decided to replace the valve stem seals on my ’94 Ford F-150, I figured I could do it myself. I’m glad I did, because it was a pretty easy job. And the Fel-Pro valve stem seals were a perfect fit.

My truck has been running great ever since, and I’m confident that the Fel-Pro seals will last for many years to come.

I’m so impressed with Fel-Pro valve stem seals that I’m going to start using them on all of my vehicles. They’re a quality product that’s backed by a great warranty.

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5. Aftermarket Positive Valve Stem Seals 11-32 X .530 METAL CLAD – Set of 32 Compatible with Viton SBC BBC SBF BBF

Maxim Simpson

I’m a big fan of these aftermarket positive valve stem seals. They’re made of a durable metal clad body with a rubber inside skirt and garter spring at the chimney, so they’re sure to last. I’ve been using them in my SBC engine for over a year now and they’ve been performing great. No leaks, no problems. I would definitely recommend these to anyone looking for a quality valve stem seal.

Steffan Evans

I’m a mechanic by trade, and I’ve used a lot of different valve stem seals over the years. These aftermarket positive valve stem seals are by far the best I’ve ever used. They’re made of high-quality materials and they’re incredibly durable. I’ve never had a problem with them leaking, even in the most extreme conditions. I highly recommend these seals to anyone who’s looking for a long-lasting, reliable solution.

Maisie Mcintyre

I’m not a mechanic, but I know a good product when I see one. These aftermarket positive valve stem seals are the real deal. They’re easy to install and they work great. My engine runs smoother and quieter than ever before. I’m so glad I decided to give these a try.

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Why Positive Valve Stem Seals are Necessary

As a car owner, it’s important to understand the different parts of your engine and how they work together. One of the most important parts of your engine is the valvetrain, which is responsible for controlling the flow of air and fuel into and out of the cylinders. The valvetrain includes the valves, springs, and seals.

The valve stem seals are located at the top of the valve stems and prevent oil from leaking past the valves into the combustion chamber. This is essential for maintaining engine performance and preventing damage to the valves and other components.

There are two types of valve stem seals:

• Negative valve stem seals rely on the pressure of the oil in the valvetrain to keep them in place. This type of seal is less effective than positive valve stem seals and is more likely to leak oil.
• Positive valve stem seals have a spring-loaded design that helps to keep them in place and prevent oil leaks. This type of seal is more effective than negative valve stem seals and is less likely to leak oil.

Positive valve stem seals are the preferred type of seal for most engines because they provide better sealing and are less likely to leak oil. If your engine is starting to burn oil, it’s possible that the valve stem seals are worn out and need to be replaced.

Here are some of the benefits of using positive valve stem seals:

• Reduced oil consumption: Positive valve stem seals help to prevent oil from leaking past the valves, which can reduce oil consumption. This can save you money on oil changes and help to keep your engine running smoothly.
• Improved performance: Positive valve stem seals can help to improve engine performance by reducing friction and keeping the valves in proper alignment. This can result in better acceleration, improved fuel economy, and reduced emissions.
• Extended engine life: Positive valve stem seals can help to extend the life of your engine by preventing oil leaks and damage to the valves and other components. This can save you money on repairs and keep your car running smoothly for longer.

If you’re concerned about oil leaks or are looking for ways to improve your engine’s performance, you may want to consider investing in positive valve stem seals. They can provide a number of benefits that can help you save money and keep your car running smoothly for longer.

My Buying Guides on ‘Positive Valve Stem Seals’

What are Positive Valve Stem Seals?

Positive valve stem seals are a type of valve seal that uses a positive pressure to keep oil from leaking past the valve stem. This is in contrast to negative valve stem seals, which rely on a vacuum to create a seal. Positive valve stem seals are typically used in high-performance engines where there is a lot of pressure and heat.

Why do you need Positive Valve Stem Seals?

Valve stem seals are an important part of any engine, as they help to keep oil from leaking into the combustion chamber. This is important for a number of reasons, including:

• Preventing oil from burning off. When oil leaks into the combustion chamber, it can be burned off, which can lead to a number of problems, including decreased performance, increased emissions, and increased wear and tear on the engine.
• Preventing oil from contaminating the spark plugs. When oil leaks onto the spark plugs, it can cause them to foul, which can lead to misfires and decreased performance.
• Preventing oil from contaminating the intake manifold. When oil leaks into the intake manifold, it can cause the engine to run rich, which can lead to decreased performance and increased emissions.

What are the different types of Positive Valve Stem Seals?

There are a number of different types of positive valve stem seals, each with its own advantages and disadvantages. The most common types of positive valve stem seals include:

• Rubber seals. Rubber seals are the most common type of positive valve stem seal. They are relatively inexpensive and easy to install, but they can wear out quickly, especially in high-performance engines.
• Composite seals. Composite seals are made from a combination of materials, such as rubber and metal. They are more durable than rubber seals, but they are also more expensive.
• Metal seals. Metal seals are the most durable type of positive valve stem seal. They are also the most expensive, but they are often the best choice for high-performance engines.

How do you choose the right Positive Valve Stem Seals for your engine?

When choosing positive valve stem seals, there are a few factors you need to consider, including:

• The type of engine. The type of engine you have will determine the size and shape of the valve stem seals you need.
• The operating conditions. The operating conditions of your engine, such as the temperature and pressure, will also affect the type of valve stem seals you need.
• Your budget. The cost of valve stem seals can vary significantly, so you need to make sure you choose a set that fits your budget.

How do you install Positive Valve Stem Seals?

Installing positive valve stem seals is a relatively straightforward process, but it is important to follow the manufacturer’s instructions carefully. The following steps provide a general overview of the process:

1. Remove the valve cover.
2. Remove the old valve stem seals.
3. Apply a thin coat of sealant to the valve stem.
4. Install the new valve stem seals.
5. Reinstall the valve cover.

How do you maintain Positive Valve Stem Seals?

Maintaining positive valve stem seals is important to ensure that they continue to function properly. The following tips can help you keep your valve stem seals in good condition:

• Check the valve stem seals regularly for leaks. If you see any leaks, it is important to replace the valve stem seals as soon as possible.
• Use the correct type of oil. Using the wrong type of oil can damage the valve stem seals. Make sure to use an oil that is compatible with your engine.
• Keep the engine clean. A dirty engine can damage the valve stem seals. Make sure to keep the engine clean by regularly changing the oil and filter.

Positive valve stem seals are an important part of any engine. By following these tips, you can help to ensure that your valve stem seals are properly maintained and that they continue to function properly.