Is300 headers

Types of IS300 Headers

IS300 headers are available in different types that suit various needs and preferences. Each type has unique features that improve exhaust flow in distinct ways. Here are the common types of IS300 headers:

• Shorty headers

  Shorty headers are an ideal choice for those who want to maximize the performance of their everyday street cars. They are called shorty headers because the tubes are short and only extend a few inches past the cylinder head. Shorty headers usually have 4-2-1 or 4-1 exhaust pipe configurations. This means that the tubes merge into two pipes that join up into one and then exit the collector. The design improves torque and low-end power. Shorty headers can be used as bolt-on parts. They don't require major adjustments or changes to the exhaust system.

• Long tube headers

  Long tube headers are ideal for race cars and those who prioritize high performance in their vehicles. The tubes in long tube headers are longer than those in shorty headers. Long tube headers also have a 4-1 design where all the tubes merge into a single pipe. The long tubes and the 4-1 collector design improve the top-end power of the engine. This is because the longer tubes create a better scavenging effect, which helps pull the exhaust gases out of the cylinders. However, installing long tube headers can be quite challenging since they require more modifications to the exhaust system.

• Mid-length headers

  Mid-length headers combine the features of long tube and shorty headers. The tubes are longer than those of shorty headers but shorter than those of long tube headers. This makes mid-length headers a versatile option. They improve the low-end and mid-range power of the engine. Mid-length headers are particularly suitable for cars used in both street driving and circuit racing. The mid-length header is a 4-1 design, just like the other two types of headers.

• Turbo headers

  Turbo headers are specific IS300 headers designed for turbocharged engines. They efficiently collect exhaust gases from the engine and direct them to the turbocharger. Turbo headers enhance the efficiency and performance of the turbocharger by ensuring a steady and optimal flow of exhaust gases. This leads to quicker turbo spool times and increased overall engine power.

Specification & Maintenance of IS300 Headers

Before purchasing IS300 headers, it is important to understand their specifications. This is because different vehicles have different headers requirements. Below are the general specifications of IS300 headers.

• Material

  The material used to make IS300 headers affect their performance and durability. The most common header material is stainless steel. Coated steel and cast iron are also used but not very common. Stainless steel come in different grades. Each of the grades has its unique feature that makes it suitable for making headers. For instance, the 304-grade stainless steel is highly resistant to corrosion. It also has a high-temperature strength.

• Type

  Different types of headers are suitable for different types of engines. This is because they are designed to fit an specific exhaust system. Before selecting a type of header, make sure to check the engine type. Some common headers types include long tube headers, shorty headers, and tri-y headers.

• Flange Thickness

  The IS300 header also come with different flange thickness. The exhaust flange is the part of the header that connects to the exhaust pipes. During the flow of exhaust gases, the flange vibrates. A thick flange will minimize the vibration and improve the flow of gases. This improves the overall performance of the engine. Choose headers with a flange thickness of more than 3/8 inches.

• Pipe Diameter

  The pipes in the IS300 headers also come in different diameters. They range from 1.5 inches to 2.5 inches. Some headers have larger pipes measuring 3 inches. The pipe size affects the power and torque of the vehicle. Large diameter pipes increase the power of the vehicle. However, the pipes should not be too large. If they are too large, they will reduce the torque. Beginners and small cars should go for headers with small pipes.

The above are some common specifications of IS300 headers. However, the specifications may vary depending on the manufacturer. Always check the specifications before purchasing the headers.

It is important to maintain IS300 headers in good condition. Proper maintenance not only increase the lifespan of the headers but also improve the overall performance of the vehicle. Below are some header maintenance tips.

• Regular Inspection

  Regularly inspect the headers for any sign of damage. Look out for cracks, rust, and heat damage. Early detection makes it easy to repair or replace the headers.

• Keep it Clean

  Clean the headers regularly to remove any build-up dirt and grime. Cleaning also removes any build-up oil that can catch fire. Use a soft cloth or brush when cleaning the headers.

• Tighten Loose Bolts

  During regular inspection, if loose bolts are noticed, make sure to tighten them. Loose bolts can cause the headers to become detached over time. When the headers become detached, they affect the performance of the vehicle.

• Use the Right Gasket

  Always use the recommended gasket when installing the headers. Do not use a gasket that is not compatible with the headers. The wrong gasket can cause the headers to leak.

How to choose IS300 headers

When it comes to business, it is imperative to know how to choose the right products. So, how do businesses choose the right headers for IS300 models?

• Understand the vehicle

  Start by understanding the make and model of the car. This includes understanding the year of production, the engine size, and other important details. This is important because it ensures that the headers chosen are just right for the vehicle. Also, header manufacturers specify the make and model of headers to help buyers choose the right fit.

• Consider the material

  Another important factor to consider is the material. Is it steel, stainless steel, or aluminized steel? Each of these materials comes with its own benefits and downsides. For instance, stainless steel headers for IS300 will not rust or corrode. This makes them very durable. On the downside, they are quite expensive.

• Consider the level of skill

  It is important to consider the level of skill when choosing IS300 header bolts. Some headers are easier to install than others. For instance, some header kits come with exhaust gaskets, header bolts, and other important parts needed for installation. Additionally, some headers are designed for IS300 models with manual transmissions. Keep this in mind when choosing headers for a client.

• Check for warranty

  To choose the right IS300 header, check if the supplier or manufacturer offers a warranty. A warranty is a good sign that the manufacturer believes in its product. Additionally, the warranty acts as a safeguard for the buyer.

How to DIY and Replace IS300 Headers

Before attempting to replace the headers on an IS300, it's important to note that this is a project best suited for those with mechanical experience. Additionally, replacing headers on an IS300 may void warranties or have emissions implications, so it's essential to consider these factors before proceeding. With that said, here's a general guide on how to replace IS300 headers:

Gather the necessary tools

• Socket set
• Wrench set
• Torque wrench
• Ratchet extensions
• Pliers
• Screwdrivers
• Jack and jack stands
• Lug wrench
• New gaskets
• IS300 headers

Prepare the vehicle

• Ensure the vehicle is on a flat surface, and engage the parking brake.
• Disconnect the battery.
• Raise the vehicle using a jack and secure it with jack stands.
• Remove the front wheels using a lug wrench.

Remove the old headers

• Follow the manufacturer's instructions to remove any components obstructing header access.
• Use a socket set and ratchet to remove the header bolts. An extension may be required to reach some bolts.
• Carefully remove the old headers.
• Clean the surfaces where the new gaskets will be installed.

Install new IS300 headers

• Position the new headers carefully to avoid damaging them.
• Secure the new headers using the supplied bolts or the original bolts.
• Torque the bolts to the manufacturer's specifications using a torque wrench.
• Reconnect any components removed during disassembly.
• Reinstall the front wheels and lower the vehicle off the jack stands.
• Reconnect the battery.

Q&A

Q1: What are IS300 headers?

A1: IS300 headers are exhaust headers made for Lexus IS 300 models. The headers replace the standard exhaust manifolds to enhance the performance of the vehicle.

Q2: What do IS300 headers do?

A2. IS300 headers improve the exhaust flow in the vehicle. They reduce back pressure and help exhaust gases to flow smoothly and more quickly out of the engine. As a result, the headers increase horsepower and torque and improve engine efficiency.

Q3: Can anyone install IS300 headers?

A3. While it is possible for any DIYer's mechanic to install IS300 headers, it requires basic mechanical knowledge. IS300 headers can be installed by following the instructions in the installation manual. It is also important to ensure that the headers are compatible with the specific Lexus IS 300 model.

Q4: Do IS300 headers require tuning?

A4. In most cases, IS300 headers will require the engine to be re-tuned. The tuning ensures that the engine control unit (ECU) is optimized for the new exhaust flow characteristics. It also helps to improve the overall performance and reliability of the vehicle.