Hey guys, have you ever thought about taking a Subaru Forester and transforming it into a drag racing beast? Sounds crazy, right? Well, it's totally possible, and the results can be mind-blowing. Let's dive deep into the world of modifying a Forester for the track. From the initial planning stages to the final modifications, we will cover everything you need to know. We will see how to build a competitive drag car. Buckle up, because it's going to be a fun ride!

Planning Your Subaru Forester Drag Car

First things first, you need a plan. Before you even think about turning a wrench, you have to decide what your goals are. Are you aiming to compete in a specific class? Do you want to break records? Or are you just looking for a fun project to unleash some serious horsepower? Your answers to these questions will significantly influence every decision you make, from the engine you choose to the tires you slap on. Building a drag car is a serious commitment, so it's super important to know what you're getting into.

Now, let's talk about the Forester itself. This is your foundation, and you'll want to start with a solid base. The generation of Forester you choose can affect what modifications are available and how much work is involved. Older models might be cheaper to buy, but they could require more upgrades to reach your power goals. Newer models might offer more advanced features, but you'll pay a premium for them. Consider the following:

• Budget: How much are you willing to spend? Drag racing modifications can be expensive. Set a realistic budget and stick to it.
• Class Rules: What class do you want to run in? Each class has its own rules and regulations regarding modifications. Make sure your build complies.
• Availability of Parts: Research the availability of performance parts for your chosen Forester model. Some models have a wider range of aftermarket support.

Once you have a plan, start researching the specific components you'll need. This is where forums, online communities, and professional tuners become your best friends. They've been there, done that, and can offer invaluable advice and guidance.

Engine and Drivetrain Upgrades

Okay, let's get to the fun stuff: making the Forester fast! The engine is the heart of any drag car, and you'll want to make sure yours is up to the challenge. The Subaru FA and EJ series engines are popular choices. The FA series is a newer engine with more potential, while the EJ series offers a wider selection of aftermarket parts. Here's a quick rundown of the key engine upgrades:

• Engine Block: Strengthening the block is crucial. Upgrading to stronger connecting rods, pistons, and a forged crankshaft will help your engine handle the increased power and stress.
• Turbocharger: A high-performance turbocharger is essential for generating the horsepower needed for drag racing. Select a turbocharger that's correctly sized for your engine and power goals. Make sure you get the best performance for your car. This can completely change the way your car works. The more modern the turbocharger the better.
• Intercooler: An intercooler cools the compressed air from the turbocharger, which increases the engine's efficiency and power output. A larger intercooler is a must-have upgrade.
• Fuel System: You'll need a fuel system that can keep up with the demands of a high-powered engine. Upgrade the fuel injectors, fuel pump, and fuel lines.
• ECU Tuning: An Engine Control Unit (ECU) tune is essential for optimizing the engine's performance. A custom tune will fine-tune the engine's fuel delivery, ignition timing, and other parameters.

Now, let's talk about the drivetrain. This is how the engine's power gets to the wheels. Upgrading the drivetrain is just as important as the engine itself. A weak drivetrain can lead to broken parts and lost races. Here's what you need to consider:

• Transmission: A stronger transmission is a must. Consider upgrading to a performance transmission or a sequential gearbox for faster shifts.
• Clutch: A high-performance clutch can handle the increased torque and ensure that the power is transferred efficiently.
• Limited-Slip Differential (LSD): An LSD helps distribute power to the wheels with the most grip, improving traction and acceleration.
• Driveshafts: Upgrade to stronger driveshafts to handle the increased power and prevent breakage.

Suspension and Chassis Modifications

Alright, you've got the power, but you also need to make sure your Forester can handle it. This is where suspension and chassis modifications come in. A well-tuned suspension is critical for launching off the line and maintaining control at high speeds. Here's what you should focus on:

• Coilovers: Coilovers are adjustable suspension systems that allow you to fine-tune the ride height, damping, and spring rates. This helps you to optimize the suspension for drag racing.
• Drag Racing Springs: These springs are designed to improve weight transfer and launch characteristics.
• Control Arms and Bushings: Upgrading the control arms and bushings can improve handling and stability. Stiffer bushings can reduce flex and improve responsiveness.
• Roll Cage: A roll cage is a must-have safety feature for any drag car. It protects the driver in the event of a crash.
• Weight Reduction: Reducing weight is one of the easiest ways to improve performance. Remove unnecessary items like the back seats, sound deadening, and spare tire.
• Chassis Reinforcement: Reinforcing the chassis can improve rigidity and handling. Consider adding a strut tower brace and other chassis bracing components.

Exterior and Interior Modifications

While the engine and suspension are the core components of a drag car, don't forget the exterior and interior. These modifications can improve performance, safety, and aesthetics.

• Wheels and Tires: Choose lightweight wheels and drag racing tires for maximum grip and acceleration. Slicks are a common choice for drag racing.
• Aerodynamics: Aerodynamic modifications can help reduce drag and improve stability at high speeds. Consider adding a front splitter, rear wing, and side skirts.
• Safety Equipment: Invest in essential safety equipment like a racing seat, harness, and fire suppression system.
• Interior: Strip out unnecessary interior components to reduce weight. Install a racing seat and a steering wheel. Consider a digital dash for monitoring engine parameters.

Tuning and Testing

Once all the modifications are complete, it's time to tune and test your Forester. This is a crucial step that will determine how well your car performs on the track. Here's what to expect:

• Dyno Tuning: A professional dyno tune will optimize the engine's performance. The tuner will adjust the fuel delivery, ignition timing, and other parameters to maximize power and torque.
• Track Testing: Take your Forester to the track and test its performance. Make adjustments to the suspension and other components as needed.
• Data Logging: Use data logging equipment to monitor engine parameters and identify any issues.
• Refine and Repeat: Drag racing is an iterative process. Continuously refine your setup and make adjustments to improve performance. Keep improving your car to ensure it's up to par.

Safety First

Safety is paramount when building and racing a drag car. Always prioritize safety over speed. Here are some essential safety considerations:

• Roll Cage: A properly installed roll cage is critical for driver safety. Make sure it meets the requirements of the racing class.
• Racing Seat and Harness: A racing seat and multi-point harness will keep you secure in the event of an accident.
• Fire Suppression System: A fire suppression system can quickly extinguish a fire in the event of an engine failure.
• Helmet and Racing Gear: Always wear a helmet and appropriate racing gear when on the track.
• Regular Inspections: Regularly inspect your car for any mechanical issues. Perform maintenance to ensure everything is in good working order.

Conclusion

Building a Subaru Forester drag car is a challenging but rewarding project. With careful planning, proper modifications, and attention to detail, you can transform your Forester into a real drag racing machine. Remember to prioritize safety and have fun! The process is just as important as the destination. So, get out there, start wrenching, and see what you can achieve. Good luck, and happy racing!