5 Ways to Raise the Exhaust on Your Lexus GS350 (DIY Guide)

Dreaming of a deeper, more resonant exhaust note from your Lexus GS350, but hesitant to commit to a full aftermarket system? Perhaps you’re simply battling ground clearance issues or need extra space for maintenance. Raising your GS350’s exhaust, whether temporarily or permanently, can be a surprisingly achievable task, offering a range of benefits beyond just sound enhancement. However, navigating the complexities of exhaust modifications requires careful consideration and a thorough understanding of the potential impacts on your vehicle’s performance and longevity. This guide will walk you through various methods to raise your GS350’s exhaust, addressing crucial considerations like choosing the right approach for your needs, the tools and materials required, and the potential pitfalls to avoid. Ultimately, you’ll be empowered to make informed decisions and achieve the desired outcome for your vehicle.

Firstly, let’s explore the different methods available for raising your GS350’s exhaust system. One common approach involves installing exhaust spacers, strategically placed between the exhaust flanges. These spacers, typically made of steel or aluminum, effectively increase the distance between exhaust components, providing the necessary lift. Alternatively, adjustable exhaust hangers can be employed. These hangers offer a more versatile solution, allowing for fine-tuning of the exhaust height. Furthermore, for those seeking a more permanent and customizable solution, custom exhaust fabrication offers unparalleled flexibility. This method involves modifying the existing exhaust piping or creating a completely new system tailored to your specific needs and preferences. Consequently, the cost and complexity of custom fabrication can be significantly higher than other methods. Regardless of the chosen approach, it’s crucial to consider factors such as the desired lift height, budget constraints, and your level of mechanical expertise before proceeding. Thorough research and careful planning will ensure a successful and satisfying outcome.

In addition to choosing the right method, understanding the potential implications of raising your GS350’s exhaust is paramount. While increasing ground clearance can be advantageous for navigating uneven terrain or accommodating larger wheels and tires, it can also impact exhaust flow and backpressure. Consequently, modifications to the exhaust system can potentially affect engine performance and fuel efficiency. Moreover, improperly executed modifications can lead to exhaust leaks, which not only compromise performance but also pose safety risks due to potential exposure to harmful exhaust fumes. Therefore, meticulous attention to detail and adherence to proper installation procedures are essential for a safe and effective modification. Furthermore, it’s always advisable to consult with a qualified mechanic or exhaust specialist, particularly if you’re undertaking more complex modifications like custom fabrication. By taking the necessary precautions and seeking expert advice when needed, you can confidently raise your GS350’s exhaust while minimizing potential risks and maximizing the benefits.

Assessing Your Lexus GS350’s Current Exhaust Setup

Before you even think about raising your GS350’s exhaust, it’s crucial to take a good look at what you’re working with. Understanding your current setup is the foundation for making informed decisions about modifications. This involves more than just a quick glance underneath your car. You’ll need to get a bit more intimate with your exhaust system to truly understand its components and their condition.

Start by identifying the key components of your exhaust system. This typically includes the exhaust manifolds (or headers), the catalytic converters, the mid-pipe, the resonator, and the muffler. Locate each of these components visually, tracing the exhaust path from the engine to the rear of the car. Pay attention to the size and routing of the pipes. Are they single or dual? What diameter are they? Are there any bends or kinks that might restrict flow? These observations will give you a baseline understanding of your GS350’s existing exhaust configuration.

Next, assess the condition of your current system. Look for signs of rust, damage, or leaks. Rust can significantly weaken the exhaust components, leading to potential failure. Leaks, on the other hand, can not only impact performance but also create unpleasant noises and even safety hazards due to exhaust fumes. Carefully examine the connections between different components, as these are common areas for leaks to develop. Tap lightly on different parts of the system with a rubber mallet. A dull thud might indicate internal rust or damage.

Consider the material of your current exhaust system. Is it made of stainless steel, aluminized steel, or another material? Stainless steel offers superior corrosion resistance and longevity, while aluminized steel is a more budget-friendly option but may be more susceptible to rust over time. Understanding the material will help you determine the potential lifespan of your current system and inform your choices for future modifications.

Finally, think about your goals for modifying your exhaust. Are you looking for a more aggressive sound, improved performance, or both? The answers to these questions will influence the type of modifications you make. For instance, if performance is your primary concern, you might consider a cat-back exhaust system with larger diameter piping and a high-flow muffler. If you’re primarily after a deeper sound, a muffler delete or a different style of muffler might be sufficient. Knowing what you want to achieve will help you choose the right path for your GS350’s exhaust upgrade.

Key Exhaust System Components and Inspection Points

Safely Lifting and Securing Your GS350

Raising your Lexus GS350, whether for maintenance, modifications, or repairs, requires careful attention to safety. Doing it correctly protects both you and your car from potential harm. Following the right procedures ensures a stable lift and prevents damage to your vehicle’s undercarriage.

Safely Lifting and Securing Your GS350

Before you even think about jacking up your GS350, you need to gather the right equipment. This isn’t just about having the right jack, although that’s crucial. Think about it as prepping for surgery; you wouldn’t want your surgeon to start without the right tools, would you?

Firstly, you’ll need a good quality floor jack rated for the weight of your GS350. Don’t skimp here; a sturdy jack is a worthwhile investment for your car’s safety and your own peace of mind. Check your owner’s manual for the exact weight of your specific model year. Along with the jack, you’ll need jack stands. These are essential for supporting the car once it’s lifted. Never rely solely on a jack; they can fail, and the consequences can be severe. Make sure the jack stands are also rated for your car’s weight and are placed on solid, level ground.

Next up are wheel chocks. These prevent the car from rolling while it’s lifted. Place them securely against the wheels that will remain on the ground, opposite the side you’re lifting. A good set of gloves will protect your hands from grease and grime, and safety glasses will shield your eyes from any flying debris. Finally, having a wheel wrench handy allows you to quickly and easily remove the wheels if necessary.

Choosing the Right Jack Points

Picking the right jack points is absolutely paramount to avoid damaging your GS350’s undercarriage. Think of these points as designated lifting zones, specifically engineered to handle the weight of the car without causing damage. Using the wrong points can lead to bent metal, broken components, or even a dangerous collapse.

Your owner’s manual is your best friend here. It will clearly identify the recommended jack points, often with accompanying diagrams. These points are usually reinforced sections of the frame or specifically designed pinch welds. Look for flat, solid areas along the sides of the car, typically near the wheels. Avoid jacking up the car on any plastic parts, exhaust pipes, or suspension components. These areas are not designed to bear the weight of the car and could easily be damaged.

Lifting and Securing with Jack Stands

Now that you’ve identified the correct jack points, it’s time to lift the car. Position the jack squarely under the designated jack point and slowly begin raising it. Keep a close eye on the car as it lifts, ensuring the jack remains stable and doesn’t shift. Once the tire is a few inches off the ground, slide the jack stands into place, directly under the jack points indicated in your owner’s manual. Slowly lower the jack until the car’s weight rests securely on the jack stands. Give the car a gentle shake to confirm it’s stable before proceeding with any work underneath.

Double-checking the stability is a non-negotiable step. You want absolute certainty that the car won’t shift or fall while you’re working beneath it. This means visually inspecting the jack stands to ensure they’re sitting flush against the designated points and giving the car a firm but careful shake from several angles. If there’s any wobble or movement, lower the car immediately, readjust the jack stands, and repeat the process until the car is completely stable. Remember, your safety depends on it.

Adjusting Exhaust Hangers for Increased Clearance

One of the simplest and most effective ways to gain some extra clearance for your GS350’s exhaust system is by adjusting the exhaust hangers. These rubber mounts are designed to isolate the exhaust from the chassis, reducing noise and vibration. They also offer a small degree of flexibility, allowing you to tweak the exhaust’s position. This can be particularly useful if you’re experiencing scraping on speed bumps, steep driveways, or uneven terrain.

Tools and Materials

Before you begin, gather the following tools and materials. Having everything ready will make the process smoother and more efficient.

Safety Precautions

Safety is paramount when working under your vehicle. Always use jack stands on a level surface and ensure the car is stable before starting any work. The exhaust system can get extremely hot, so allow it to cool down completely before making any adjustments.

Locating the Exhaust Hangers

The exhaust hangers are located along the underside of the car, securing the exhaust pipes to the chassis. They are typically made of rubber and resemble a loop or a hook. Inspect the entire exhaust system from the catalytic converter back to the tailpipe to identify all the hanger locations. Pay close attention to areas where the exhaust hangs lowest or appears closest to the ground. These are the prime candidates for adjustment.

Adjusting the Hangers

Once you’ve located the hangers that need adjustment, apply penetrating lubricant to the rubber and metal contact points. This will help loosen them up, especially if they’re rusted or haven’t been moved in a while. Using the exhaust hanger removal tool (or a pry bar and lubricant), carefully disconnect the hanger from its mounting point. You might need to apply some force, but avoid excessive pressure which could damage the hanger or the exhaust pipe. With the hanger disconnected, you can now reposition the exhaust slightly higher. Sometimes, simply rotating the rubber hanger within its bracket can provide enough clearance. In other cases, you may need to use a pry bar to gently lever the exhaust upwards. Small incremental adjustments are key. Check the clearance after each adjustment to avoid raising the exhaust too high, which could put stress on other components. Once you’re satisfied with the new position, reconnect the exhaust hanger. Double-check that it’s securely fastened.

Fine-Tuning and Verification

After adjusting the relevant hangers, carefully lower the vehicle from the jack stands. Start the engine and listen for any unusual noises or rattles coming from the exhaust system. These could indicate a loose hanger or contact with other parts of the undercarriage. Take the car for a test drive, paying particular attention to how the exhaust clears speed bumps and other obstacles. If scraping still occurs, you may need to make further adjustments or consider alternative solutions like stiffer aftermarket exhaust hangers. Remember, even a small increase in clearance can make a significant difference in preventing costly damage to your exhaust system. Periodically inspect your exhaust hangers for wear and tear and replace them if they appear cracked or damaged. This preventative maintenance will help ensure a quiet, efficient, and trouble-free exhaust system for years to come. If you are uncomfortable working under your car or are unsure about any of these steps, it’s always best to consult a qualified mechanic.

Post-Installation Inspection and Testing

After you’ve successfully installed your GS350 exhaust system, it’s crucial to thoroughly inspect and test everything to ensure proper fitment, function, and safety. This process will help you identify any potential issues early on and prevent bigger problems down the road. Take your time and be meticulous – a little extra care here can save you headaches later.

Visual Inspection

Begin by visually inspecting all the components of the newly installed exhaust system. Carefully examine the exhaust manifolds, catalytic converters, piping, muffler(s), and exhaust tips. Look for any signs of damage such as dents, scrapes, or cracks. Pay close attention to the welds and connections, making sure they appear solid and complete. Check for proper clearance between the exhaust system and other components like the fuel lines, brake lines, drive shaft, and body of the car. Make sure all the hangers and supports are correctly positioned and securely fastened. A loose exhaust system can vibrate excessively, causing noise and potentially damaging other parts of your vehicle.

Leak Test

Once you’ve completed the visual inspection, the next crucial step is to check for leaks. A leaky exhaust system can reduce performance, create annoying noises, and even allow dangerous exhaust fumes to enter the cabin. The simplest way to check for leaks is to start the engine and carefully listen for any hissing or puffing sounds. It’s helpful to have a friend assist you by listening near the suspected leak areas while you rev the engine slightly. Another method involves using soapy water. With the engine off, spray a mixture of soapy water onto all the connections and joints of the exhaust system. Then, start the engine and look for any bubbles forming. Bubbles indicate escaping exhaust gases and thus a leak. If you find any leaks, address them promptly by tightening connections or replacing damaged components.

Check Exhaust Tip Placement and Alignment

Ensure the exhaust tips are correctly aligned and positioned. They should be centered within the cutouts in the rear bumper or fascia, with equal spacing on both sides. Improperly aligned tips can not only look unsightly but can also cause exhaust fumes to be directed towards the body of the car, potentially leading to discoloration or damage. Adjust the tips as needed to achieve the desired look and functionality.

Test Drive and System Functionality

After completing the static tests, it’s time for a test drive. Take your GS350 for a drive under various conditions, including city driving, highway driving, and acceleration. Pay attention to any unusual noises, vibrations, or smells. Listen for rattles, drones, or any other sounds that weren’t present before the installation. Monitor the performance of the engine, noting any changes in power delivery or responsiveness. Verify that there are no noticeable exhaust fumes entering the cabin. This test drive is critical for identifying any issues that may not have been apparent during the static inspection.

Table of Common Issues and Solutions

Here’s a quick reference table for common issues:

Recheck After Heat Cycling

Exhaust systems expand and contract with temperature changes. After a few heat cycles (driving the car and allowing the exhaust system to cool down), it’s a good idea to recheck all the connections and fasteners to ensure they remain tight. This final check helps to guarantee the long-term reliability and performance of your new exhaust system.

Consult a Professional

If you encounter any issues you can’t resolve, or if you’re unsure about any aspect of the installation or testing process, don’t hesitate to consult a qualified mechanic. A professional can diagnose and repair any problems quickly and efficiently, ensuring your exhaust system is functioning safely and optimally.

Document Your Work

Finally, keep detailed records of your installation, including any parts used, modifications made, and test results. This documentation can be invaluable for future maintenance and troubleshooting. Photos and videos can also be helpful for documenting the process and identifying any potential issues down the line. Proper documentation ensures that you have a comprehensive history of your exhaust system and can help prevent future problems.

Troubleshooting Common Exhaust Raising Issues

Raising your GS350’s exhaust can seem daunting, but with a bit of know-how, you can tackle most issues. Here’s a breakdown of common problems and their solutions:

Exhaust Hanger Issues

Sometimes, the problem isn’t the exhaust itself, but the hangers that support it. These rubber hangers can wear out, break, or become detached, causing the exhaust to sag or make contact with the undercarriage. Inspect all the hangers visually. A broken or loose hanger is usually easily identifiable. Replacements are inexpensive and available at most auto parts stores. When installing new hangers, make sure they’re positioned correctly and securely fastened. Misaligned hangers can also contribute to exhaust clearance issues.

Rusty or Seized Bolts

Dealing with rusty or seized bolts is a common headache. Penetrating oil is your best friend here. Apply liberally to the affected bolts and let it soak in for a good while, even overnight if possible. A heat gun or a propane torch can also help to break the rust bond. Be cautious when using heat near fuel lines or other flammable components. If the bolts still refuse to budge, consider using a bolt extractor or seeking professional help. Stripped bolts can complicate matters considerably.

Bent or Damaged Exhaust Pipes

Impacts with road debris or curbs can bend or damage the exhaust pipes. A visual inspection will reveal any obvious dents or kinks. Minor bends can sometimes be corrected with a pipe bender or by carefully applying leverage. However, significant damage usually requires replacing the affected section of the exhaust. If you’re welding in a new section, ensure the welds are clean and airtight to prevent leaks.

Incorrect Exhaust System

Occasionally, a poorly fitted aftermarket exhaust system can be the root of the problem. Double-check that the exhaust system is designed specifically for your GS350 model year. An incorrect system might not have the proper clearances, leading to contact with the undercarriage. If you’ve recently installed an aftermarket system, consult the manufacturer’s instructions or contact their customer support for guidance. A professional exhaust shop can also help diagnose fitment issues.

Worn-Out Bushings

Like exhaust hangers, the rubber bushings that isolate the exhaust system can wear out and cause sagging. These bushings are often located where the exhaust connects to the engine or transmission. Inspect them for cracks, tears, or excessive play. Replacing worn-out bushings can restore proper exhaust height and reduce vibrations. These bushings can be tricky to access, so some disassembly might be required.

Overloaded Vehicle

Carrying excessive weight in your GS350 can compress the suspension, bringing the exhaust closer to the ground. If you frequently haul heavy loads, consider using heavier-duty suspension components to maintain adequate ride height. Distribute the load evenly within the vehicle to minimize suspension compression. Check your owner’s manual for the maximum recommended payload.

Aftermarket Suspension Modifications

Lowering springs or other suspension modifications can also reduce ground clearance and increase the likelihood of exhaust scraping. If you’ve lowered your GS350, you might need to adjust the exhaust system or consider an exhaust designed for lowered vehicles. Carefully measure the clearance between the exhaust and the ground to ensure sufficient space.

Damaged Heat Shields

While not directly related to raising the exhaust, damaged heat shields can rattle and create noise that sounds similar to exhaust contact. Inspect the heat shields around the catalytic converter and exhaust pipes for looseness or damage. Replace or repair any damaged shields to eliminate unwanted noise. Loose heat shields can also vibrate against the exhaust system, potentially causing damage over time.

Exhaust System Raising Methods - A Detailed Look

There are several ways to address a low-hanging exhaust. Some common methods include adjusting the exhaust hangers, installing exhaust spacers, or using a combination of techniques. Exhaust spacers are relatively inexpensive and can provide a small amount of lift. They are installed between the exhaust hangers and the chassis. However, for significant lift, you may need to modify the exhaust hangers themselves or even consider custom fabrication. This often involves welding or bending the hangers to reposition the exhaust. Here’s a table summarizing some common methods:

Choosing the right method depends on the specific issue and your level of mechanical expertise. For complex situations, consulting a professional exhaust shop is always a good idea. They have the experience and equipment to handle more challenging repairs or modifications. Remember to always prioritize safety and use appropriate tools for the job.

Raising the Exhaust on a Lexus GS350

Raising the exhaust on a Lexus GS350 can be desirable for several reasons, including increased ground clearance for off-roading or aesthetic modifications. However, it’s crucial to approach this modification with caution and a thorough understanding of the potential implications. Improperly lifting the exhaust can negatively impact vehicle performance, emissions, and even legality depending on local regulations. A professional assessment is highly recommended before undertaking any modifications.

Several methods exist for raising the exhaust system. These include using exhaust spacers, adjusting the suspension, or fabricating custom exhaust hangers. Exhaust spacers offer a relatively simple solution, increasing the distance between the exhaust system and the chassis. Adjusting the suspension, while raising the entire vehicle, can also indirectly raise the exhaust, but this method can significantly alter the vehicle’s handling characteristics. Custom fabrication offers the most tailored approach but requires specialized skills and equipment. Regardless of the chosen method, ensuring proper clearance and maintaining the structural integrity of the exhaust system are paramount.

It’s vital to consider the potential drawbacks of raising the exhaust. Altering the exhaust system can impact back pressure, potentially affecting engine performance and fuel efficiency. Additionally, modifications can void warranties and lead to issues with vehicle inspections if not performed correctly. Finally, any changes to the exhaust system must comply with local noise and emissions regulations. Consulting a qualified mechanic experienced in exhaust modifications is strongly advised to ensure the modifications are performed safely and legally.

People Also Ask About Raising the Exhaust on a GS350

Can I use exhaust spacers to raise my GS350’s exhaust?

Yes, exhaust spacers can be used to raise the exhaust system. They are installed between the exhaust flanges and the chassis, creating additional clearance. However, it’s essential to choose the correct size and material for the spacers to ensure a secure and reliable fit. Overly thick spacers can put stress on the exhaust system and lead to leaks or damage.

Will raising the exhaust affect my GS350’s performance?

Potentially, yes. Altering the exhaust system, including raising it, can impact back pressure, which can affect engine performance and fuel efficiency. Changes in exhaust flow dynamics can also lead to changes in engine sound. It’s recommended to consult with a performance specialist to understand the potential impact on your specific vehicle and driving style.

Is it legal to raise the exhaust on my GS350?

Legality depends on local regulations. Some jurisdictions have restrictions on exhaust modifications, including height and noise levels. Before modifying your exhaust system, it’s essential to research and understand the applicable laws in your area to avoid potential fines or legal issues.

How much does it cost to raise the exhaust on a GS350?

The cost can vary significantly depending on the chosen method. Exhaust spacers are generally the most affordable option. Adjusting the suspension can be more expensive, especially if it involves replacing components. Custom fabrication is typically the most costly approach due to the labor involved. It’s best to obtain quotes from reputable mechanics or exhaust specialists to get an accurate estimate for your specific needs.