Hey guys! If you're rolling in an IS300 and looking to seriously upgrade your braking performance, then you've probably stumbled upon the Chase Bays brake booster conversion. This is a popular and effective mod for a reason, offering significant improvements in stopping power and pedal feel. This article is your go-to guide for everything you need to know about the IS300 Chase Bays brake booster conversion. We'll cover what it is, why you should consider it, what you'll need, and a general overview of the installation process. Get ready to dive deep into the world of enhanced braking and take your IS300 to the next level!

Why Upgrade Your IS300 Brake Booster?

So, why bother with a Chase Bays brake booster conversion in the first place? Well, the stock brake system in the IS300 is decent, but it can be a limiting factor when you start pushing the car harder, especially on the track or during spirited driving. Here's a breakdown of the key benefits:

• Enhanced Braking Performance: The primary reason for this upgrade is to improve your stopping power. The Chase Bays system often utilizes a smaller, more efficient master cylinder and a relocated booster, resulting in a firmer pedal feel and quicker response. This means you can stop faster and with more control.
• Improved Pedal Feel: Many owners report a much more direct and responsive pedal feel after the conversion. The mushy, vague feeling of the stock system is replaced with a firm and confidence-inspiring pedal. This makes it easier to modulate the brakes and control your stopping distances.
• Increased Brake System Efficiency: By optimizing the master cylinder size and the booster's position, the Chase Bays kit can improve the overall efficiency of your brake system. This can lead to less fade under heavy braking and more consistent performance.
• Better Brake Bias Control: Some Chase Bays kits allow for adjustable brake bias. This lets you fine-tune the front-to-rear braking balance, optimizing your car's handling characteristics under braking.
• Aesthetic Enhancement: Let's be honest, the Chase Bays conversion looks fantastic under the hood. The high-quality components and clean design add a touch of race-inspired style to your engine bay. Plus, it is going to make your friends jealous for sure!

In essence, upgrading your IS300 brake booster with a Chase Bays kit is about significantly improving your car's braking capabilities, giving you more confidence and control on the road or track. It is a worthwhile modification for any IS300 owner who values performance and safety. Trust me, the difference is night and day.

What You Need for the Chase Bays Brake Booster Conversion

Alright, so you're convinced and ready to take the plunge? Awesome! Before you get started, you'll need to gather the necessary components. Here's a list of what you'll typically need for a Chase Bays brake booster conversion for your IS300:

• Chase Bays Brake Booster Conversion Kit: This is the heart of the upgrade. Chase Bays offers specific kits designed for the IS300, typically including a smaller master cylinder, a relocated brake booster, custom brake lines, and all the necessary hardware.
• Brake Fluid: You'll need high-quality brake fluid to bleed the system after installation. DOT 4 or DOT 5.1 brake fluid is usually recommended. Make sure it is a fresh fluid! You don’t want to use any used brake fluid. It is just not worth it.
• Tools: You'll need a variety of tools, including wrenches, sockets, a flare nut wrench set, a brake line flaring tool (if you're custom-making brake lines), a brake bleeder, a jack and jack stands, and various hand tools.
• Safety Gear: Safety glasses, gloves, and appropriate work attire are essential for protecting yourself during the installation process.
• Optional Parts: Depending on your specific kit and goals, you might also consider upgrading your brake lines with stainless steel lines, replacing your brake pads with high-performance pads, or upgrading your rotors for even better braking performance. The list goes on and on!

It is important to buy the right tools when doing this job. Because you will definitely need it and it will make your life a lot easier!

The Chase Bays Brake Booster Installation: A General Overview

Installing a Chase Bays brake booster conversion is a project that requires mechanical skill and patience. While it's not rocket science, it does involve working with your car's braking system, so take your time and follow the instructions carefully. Here’s a general overview of the installation process. Keep in mind that specific instructions may vary depending on the kit and your car's configuration. It is always important to use a manual before you start anything!

Step-by-Step Guide:

1. Prepare Your Vehicle: Safely jack up your IS300 and secure it on jack stands. Remove the wheels to access the brake system components. If you are not comfortable doing this, go to a shop that knows what they are doing. This is an important step.
2. Disconnect the Stock Brake Lines: Carefully disconnect the brake lines from the master cylinder and the brake booster. Be prepared for some brake fluid to leak out, so have a drain pan and absorbent rags ready. This step is a messy step!
3. Remove the Old Brake Booster and Master Cylinder: Unbolt the old master cylinder and brake booster. This usually involves removing bolts from the firewall and the pedal assembly. Save all the hardware because you might need it.
4. Install the Chase Bays Components: Install the new master cylinder, brake booster, and any brackets or mounting hardware included in the Chase Bays kit. Make sure everything is securely mounted and aligned properly. Again, use a manual before you do anything. It will save you a headache!
5. Run the New Brake Lines: This is where things can get a bit tricky. You'll need to install the new brake lines provided in the kit. If the kit doesn't include pre-made lines, you'll need to bend and flare your own lines to connect the master cylinder to the brake calipers. Make sure to route the lines carefully to avoid any interference with other components. If this is too hard, you can always ask a professional.
6. Connect the Brake Lines: Connect the new brake lines to the master cylinder and the brake calipers. Tighten the fittings securely but be careful not to overtighten them, which could damage the lines or fittings. Use a wrench. Don’t just use your hands.
7. Bleed the Brakes: This is a crucial step to remove any air from the brake lines. Use a brake bleeder or have a helper pump the brake pedal while you bleed the system at each caliper. Start with the caliper furthest from the master cylinder and work your way closer. Make sure you use fresh brake fluid. Do not use old ones. This is very important. Air bubbles in your brake lines will prevent the car from working properly.
8. Test and Adjust: Once the system is bled, test the brakes to ensure they are working properly. Check for leaks and a firm pedal feel. Make any necessary adjustments to the brake bias or other settings. Make sure everything is working as it should.
9. Final Touches: Reinstall the wheels, lower the vehicle, and give the brakes a final test drive. Check for any leaks or unusual noises. If everything checks out, you're good to go!

This is a general overview, and the specific steps may vary depending on the Chase Bays kit and your IS300. Always refer to the instructions provided with your kit for detailed guidance. If you are not comfortable with any of these steps, it is best to seek professional assistance from a qualified mechanic. Remember, your brakes are critical for safety, so don't take any shortcuts.

Common Issues and Troubleshooting

Even if you follow all the steps carefully, you might encounter a few hiccups along the way. Here are some common issues and how to troubleshoot them:

• Soft Pedal Feel: This is usually caused by air in the brake lines. Re-bleed the system thoroughly, paying close attention to each caliper. Make sure there are no leaks.
• Leaks: Check all the brake line connections and fittings for leaks. Tighten them if necessary, but don't overtighten. Replace any damaged lines or fittings.
• Uneven Braking: This could be due to air in the lines, uneven pad wear, or a problem with the brake bias. Bleed the brakes again, check your pads, and adjust the brake bias if applicable. You should consider getting your brakes checked.
• Pedal Travel is too Long: This could be due to an incorrect master cylinder size. Contact Chase Bays or consult your kit instructions to determine the correct master cylinder for your setup.

Don’t get discouraged if you run into problems. Take your time, troubleshoot systematically, and don't hesitate to seek help from online forums, or a professional mechanic. It is better to be safe than sorry.

Final Thoughts: Is the Chase Bays Brake Booster Conversion Worth It?

So, is the Chase Bays brake booster conversion worth the investment for your IS300? In a word: absolutely. The improvement in braking performance, pedal feel, and overall confidence is significant. While the installation process requires some mechanical skill and patience, the end result is a brake system that will enhance your driving experience and provide a crucial safety upgrade. If you are serious about upgrading your IS300's braking, the Chase Bays conversion is a top-tier mod. It's a great option for track days, spirited driving, or simply for those who want the best possible braking performance from their IS300. If you are still unsure if this is for you, I encourage you to do more research. There are plenty of videos on YouTube, and blogs that can help you with your purchase.

Just remember to take your time, follow the instructions carefully, and prioritize safety. With the right approach, you can transform your IS300's braking capabilities and enjoy a more thrilling and controlled driving experience. You will definitely enjoy this upgrade!