Building a Drivetrain for 800 Hp Bmw M4: Clutch, Differential, and Transmission Upgrades

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The BMW M4 is a high-performance sports car that has gained a reputation for its impressive power and handling. However, if you’re looking to push the limits of your M4 to 800 horsepower, you will need to make significant upgrades to the drivetrain components, including the clutch, differential, and transmission. This article will explore the essential upgrades required to build a reliable and powerful drivetrain for your 800 hp BMW M4.

Understanding the Drivetrain Components

The drivetrain of a vehicle is responsible for transferring power from the engine to the wheels. In the case of the BMW M4, the drivetrain consists of several key components:

  • Clutch
  • Transmission
  • Differential

Each of these components plays a crucial role in ensuring that the power generated by the engine is efficiently transmitted to the wheels. Upgrading these components is essential for achieving the desired horsepower and maintaining reliability.

Clutch Upgrades for High Power

The clutch is a critical component that connects the engine to the transmission. When upgrading to 800 hp, a stock clutch will likely slip under the increased power. Therefore, selecting a high-performance clutch is essential. Here are some options to consider:

  • Single Disc Clutch: A high-performance single disc clutch can handle increased power and torque. Look for options with high clamping force and heat resistance.
  • Multi-Disc Clutch: For even more power handling, a multi-disc clutch setup can provide better grip and durability, making it suitable for drag racing and track use.
  • Upgraded Pressure Plate: A stronger pressure plate will help prevent clutch slip and improve engagement.
  • Flywheel: Consider a lightweight flywheel to reduce rotational mass and improve throttle response.

When selecting a clutch, ensure that it is compatible with your transmission and can handle the power output of your modified engine.

Transmission Upgrades for Enhanced Performance

The transmission is responsible for shifting gears and managing power delivery to the wheels. For an 800 hp BMW M4, upgrading the transmission is crucial to handle the increased power. Here are some upgrades to consider:

  • Performance Transmission: Upgrading to a performance-oriented transmission can provide quicker shifts and improved durability.
  • Short Shifter: A short shifter can enhance the driving experience by reducing the distance required to shift gears, allowing for faster gear changes.
  • Transmission Cooler: Installing a dedicated transmission cooler can help maintain optimal operating temperatures, improving reliability during high-performance driving.
  • Upgraded Gears: Consider upgrading to stronger gears that can handle the increased torque output from your engine modifications.

These upgrades will help ensure that your transmission can handle the demands of an 800 hp setup while providing a more engaging driving experience.

Differential Upgrades for Improved Traction

The differential plays a vital role in distributing power to the wheels. For high horsepower applications, upgrading the differential is essential to improve traction and handling. Here are some options to consider:

  • Limited Slip Differential (LSD): Upgrading to a high-performance LSD can help improve traction by allowing for better power distribution to the wheels.
  • Gear Ratio Changes: Consider changing the gear ratio to improve acceleration and responsiveness, especially if you plan to use the car for racing.
  • Differential Cooler: Installing a differential cooler can help maintain optimal temperatures, preventing overheating during aggressive driving.

These upgrades will help ensure that your BMW M4 can effectively put down the power generated by your engine modifications, improving overall performance on the road or track.

Conclusion

Building a drivetrain capable of handling 800 hp in your BMW M4 requires careful consideration of the clutch, transmission, and differential. By investing in high-quality upgrades for these components, you can ensure that your M4 not only performs at its best but also remains reliable under extreme conditions. Remember to consult with professionals or experienced tuners when making these modifications to ensure compatibility and performance.