G37 Sedan: ISR Single Exit Exhaust Install Guide

by Jhon Lennon 49 views

So, you're thinking about slapping an ISR single exit exhaust on your G37 sedan? Awesome! This guide is here to walk you through the process. Let's dive into what makes this upgrade worthwhile and then get our hands dirty with the install. Whether you're a seasoned gearhead or a newbie, we'll make sure you get that sweet, aggressive exhaust note you're craving.

Why Choose the ISR Single Exit for Your G37 Sedan?

Before we get into the nitty-gritty of the installation, let’s talk about why the ISR single exit exhaust is such a popular choice for G37 sedan owners.

First off, the sound. Oh man, the sound. The ISR exhaust is known for its aggressive and throaty tone. It's not just loud for the sake of being loud; it's a refined aggression that announces your presence without being obnoxious (well, maybe a little obnoxious, but in a good way!). You'll get that deep rumble at idle and a satisfying roar when you put your foot down. If you're after an exhaust note that turns heads, this is it.

Then there's the weight savings. The stock exhaust system on the G37 is surprisingly heavy. By switching to a single exit exhaust like the ISR, you can shed a significant amount of weight. Less weight means better acceleration, better handling, and overall improved performance. It might not be a night-and-day difference, but every little bit helps, right?

Performance gains are another reason to consider this upgrade. While the G37's stock exhaust isn't terribly restrictive, an aftermarket exhaust like the ISR can improve exhaust flow, leading to small but noticeable gains in horsepower and torque. You'll likely see the most significant gains in the mid-range, where the engine can really breathe.

Aesthetics are also a factor for many. The single exit design gives your G37 a more aggressive and sporty look. It cleans up the rear of the car and provides a more focused and purposeful appearance. Plus, you get to show off that shiny new exhaust tip!

Finally, let's talk about value. The ISR single exit exhaust offers a great balance of performance, sound, and price. It's not the cheapest option on the market, but it provides excellent bang for your buck, especially when compared to some of the more premium brands. You're getting a high-quality exhaust system that delivers on its promises without breaking the bank. So, if you're looking to upgrade your G37's exhaust, the ISR single exit is definitely worth considering.

Tools and Materials You'll Need

Alright, before we start wrenching, let's make sure you've got all the necessary tools and materials on hand. There's nothing worse than getting halfway through a project and realizing you're missing something crucial. So, take a look at this list and double-check your inventory.

  • Socket Set: You'll need a variety of sockets, both metric and standard, to handle the various nuts and bolts on the exhaust system. A good set with different sizes and extensions is essential.
  • Wrenches: Like the socket set, make sure you have a good set of wrenches, including open-end and box-end wrenches. These will be useful for reaching tight spots and applying leverage.
  • Penetrating Oil: This is your best friend when dealing with old, rusty bolts. Spraying penetrating oil on the exhaust bolts a few hours (or even the day before) will make your life much easier.
  • Jack and Jack Stands: You'll need to safely lift your G37 to access the exhaust system. Make sure you use jack stands to support the car once it's lifted – safety first!
  • Gloves: Protect your hands from dirt, grease, and sharp edges. A good pair of work gloves will keep your hands clean and prevent cuts.
  • Safety Glasses: Protect your eyes from debris and flying particles. Safety glasses are a must-have when working under a car.
  • Exhaust Hangers Removal Tool: This tool makes removing the rubber exhaust hangers much easier. It's not essential, but it will save you a lot of time and frustration.
  • Torque Wrench: You'll need a torque wrench to tighten the exhaust bolts to the proper specifications. This will ensure a secure and leak-free installation.
  • New Exhaust Gaskets: It's always a good idea to replace the exhaust gaskets when installing a new exhaust system. This will ensure a good seal and prevent exhaust leaks.
  • PB Blaster: For seized bolts, this stuff is gold. Apply liberally and let it soak.
  • Anti-Seize Compound: Apply this to the threads of the new exhaust bolts to prevent them from seizing in the future.
  • Ratchet Extensions: A variety of extensions will help you reach those hard-to-get-to bolts.
  • Patience: Last but not least, bring some patience. Exhaust installations can be tricky, and it's important to take your time and do it right.

Having these tools and materials on hand will make the installation process much smoother and more enjoyable. Trust me, being prepared is half the battle!

Step-by-Step Installation Guide

Okay, let's get down to business! Here's a step-by-step guide to installing your ISR single exit exhaust on your G37 sedan. Follow these instructions carefully, and you'll have that new exhaust roaring in no time.

  1. Prepare Your G37: Start by parking your G37 on a level surface. Engage the parking brake and chock the rear wheels for added safety. Then, use your jack to lift the front of the car and securely place it on jack stands. Make sure the jack stands are properly positioned on the frame rails to support the weight of the car.

  2. Remove the Old Exhaust: Now comes the fun part – removing the old exhaust. Start by locating the exhaust hangers that secure the exhaust system to the car. Use your exhaust hanger removal tool (or a flathead screwdriver and some WD-40) to pry the hangers off their mounts. There are usually several hangers along the exhaust system, so take your time and work your way from the front to the back.

    Next, loosen the bolts that connect the exhaust system to the catalytic converters or headers. These bolts can be stubborn, so be sure to use penetrating oil and let it soak for a while before attempting to remove them. If the bolts are severely rusted or seized, you may need to use a torch or bolt extractor to get them off. Once the bolts are removed, carefully lower the old exhaust system to the ground. You may need a helper to assist you with this step, as the exhaust system can be heavy and unwieldy.

  3. Install the ISR Single Exit Exhaust: Now it's time to install your shiny new ISR single exit exhaust. Start by attaching the new exhaust gaskets to the catalytic converters or headers. Make sure the gaskets are properly aligned and seated before proceeding.

    Next, carefully lift the ISR exhaust system into place and align it with the mounting points. Attach the exhaust hangers to their mounts, starting from the front of the system and working your way to the back. Make sure the hangers are securely attached and that the exhaust system is properly supported.

    Once the exhaust system is in place, tighten the bolts that connect it to the catalytic converters or headers. Use a torque wrench to tighten the bolts to the manufacturer's specifications. This will ensure a secure and leak-free connection. Finally, double-check all the connections and hangers to make sure everything is properly installed and secured.

  4. Final Checks and Adjustments: Before you fire up your G37, take a few minutes to perform some final checks and adjustments. Make sure the exhaust system is not touching any part of the car's body or suspension. If necessary, adjust the hangers to provide adequate clearance.

    Also, double-check all the bolts and connections to make sure they are tight and secure. Once you're satisfied that everything is properly installed, lower the car from the jack stands and remove the wheel chocks.

  5. Start Your Engine and Enjoy: Now for the moment you've been waiting for – starting your engine and enjoying the sweet sound of your new ISR single exit exhaust! Turn the key and listen to that aggressive and throaty roar. Check for any exhaust leaks and address them immediately if necessary.

    Take your G37 for a test drive and enjoy the improved performance and sound of your new exhaust system. Congratulations, you've successfully installed an ISR single exit exhaust on your G37 sedan!

Tips and Tricks for a Smooth Install

Alright, let's talk about some insider tips and tricks that can make your ISR single exit exhaust installation even smoother. These are the things that experienced mechanics know, and now you will too!

  • Penetrating Oil is Your Best Friend: Seriously, don't underestimate the power of penetrating oil. Spray it liberally on all the exhaust bolts, especially the ones connecting to the catalytic converters, at least a few hours before you start working. Let it soak in and do its magic. This will save you a ton of frustration and prevent you from snapping bolts.
  • Heat is Your Ally: If you're dealing with particularly stubborn bolts, a little heat can go a long way. Use a torch to heat the bolt head for a few seconds, then try loosening it again. The heat will help break down the rust and corrosion, making the bolt easier to remove. Be careful not to overheat the bolt, as this can weaken it.
  • Use the Right Tools: Using the right tools for the job can make a huge difference. Invest in a good set of metric sockets and wrenches, as well as an exhaust hanger removal tool. These tools will make the installation process much easier and prevent you from damaging the exhaust components.
  • Don't Be Afraid to Ask for Help: If you're struggling with a particular step or just feeling overwhelmed, don't be afraid to ask for help. Find a friend who's experienced with car repairs or consult a professional mechanic. They can provide valuable guidance and assistance.
  • Take Your Time: Exhaust installations can be tricky, so it's important to take your time and do it right. Don't rush through the process, and double-check your work at each step. This will ensure a secure and leak-free installation.
  • Properly Torque Bolts: The final, and possibly most important tip is torquing the bolts correctly. Many people don't realize how important it is to torque your bolts to the specified rating. Too loose and you risk leaks, too tight, and you risk snapping the bolts.

By following these tips and tricks, you can make your ISR single exit exhaust installation a breeze. Remember to be patient, be careful, and have fun!

Common Problems and How to Solve Them

Even with the best preparation, you might run into some snags during your ISR single exit exhaust install. Here are some common problems and how to tackle them:

  • Problem: Stripped or Broken Bolts

    Solution: This is a common headache. If you strip a bolt head, try using a bolt extractor. If a bolt breaks off in the manifold or catalytic converter, you'll need to use a screw extractor or, in severe cases, drill it out and re-tap the hole. Patience is key here.

  • Problem: Exhaust Leaks

    Solution: Exhaust leaks are usually due to poor sealing at the flanges. Make sure you're using new gaskets and that the bolts are properly torqued. If you still have leaks, double-check the flange surfaces for damage or warpage. You might need to use a sealant designed for exhaust systems.

  • Problem: Exhaust Hangers Won't Budge

    Solution: Those rubber hangers can be a pain. Spray them with WD-40 or silicone lubricant and use an exhaust hanger removal tool. If you don't have the tool, try using a long screwdriver or pry bar for leverage. Be careful not to damage the rubber.

  • Problem: Rattling or Vibration

    Solution: This usually means the exhaust is hitting something underneath the car. Check the clearance around the exhaust pipes and muffler. You may need to adjust the hangers to provide more space. Also, make sure all the heat shields are properly secured.

  • Problem: Difficulty Aligning the Exhaust

    Solution: Sometimes the exhaust sections don't quite line up. Loosen all the connections and try wiggling the sections into place. You might need to use a pry bar or jack to gently persuade things. Once everything is aligned, tighten the bolts.

Knowing these common issues and their solutions can save you a lot of time and frustration during the installation process. Remember to take your time, be patient, and don't be afraid to ask for help if you get stuck.

Enjoy Your New Exhaust!

Well, there you have it, folks! You've successfully installed an ISR single exit exhaust on your G37 sedan. Now it's time to sit back, relax, and enjoy the fruits of your labor. Take your G37 for a spin and revel in the newfound power and aggressive sound. Be prepared to turn heads wherever you go, because that ISR exhaust is sure to make a statement.

Remember to keep an eye on your exhaust system over time. Check for any leaks, loose connections, or damage. Regular maintenance will ensure that your exhaust system continues to perform at its best for years to come.

So, go out there and enjoy your upgraded G37! You've earned it.