Forged Internals Upgrades for 350z Vq35de: Building a Stronger Engine for 500+ Hp

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The Nissan 350Z is renowned for its performance and tuning potential, especially with the VQ35DE engine. For enthusiasts aiming for 500+ horsepower, upgrading to forged internals is essential. This article explores the various forged internals upgrades that can help you achieve that power level while ensuring reliability and performance.

Understanding the VQ35DE Engine

The VQ35DE is a 3.5-liter V6 engine that offers a solid foundation for performance upgrades. Its design features include an aluminum alloy block and a DOHC setup with VVT (Variable Valve Timing). While it is capable of producing respectable power, the stock internals can limit performance at higher power levels.

Why Upgrade to Forged Internals?

Upgrading to forged internals is crucial for those looking to push their VQ35DE engine beyond its factory limits. Forged components offer several advantages:

  • Increased Strength: Forged internals can withstand higher levels of stress and pressure compared to stock components.
  • Improved Performance: They allow for higher RPMs and better power delivery.
  • Enhanced Reliability: Reduces the risk of engine failure under extreme conditions.

Key Forged Internals Upgrades

Here are the essential forged internals upgrades you should consider for your 350Z VQ35DE:

  • Forged Pistons: Upgrading to forged pistons allows for higher compression ratios and durability under boost.
  • Forged Connecting Rods: These rods provide the strength needed to handle increased power and RPMs.
  • Forged Crankshaft: A forged crankshaft is vital for high horsepower applications, ensuring structural integrity.
  • Upgraded Bearings: High-performance bearings are necessary to maintain oil clearance and reduce wear.
  • ARP Fasteners: Upgrading to ARP bolts for the rods and mains adds extra security against failure.

Forged Pistons

Forged pistons are a key component in building a stronger VQ35DE engine. They are designed to withstand higher temperatures and pressures, making them suitable for forced induction applications.

Benefits of Forged Pistons

Some benefits of upgrading to forged pistons include:

  • Higher Compression Ratios: This allows for better power output.
  • Better Heat Dissipation: Helps maintain optimal engine temperatures.
  • Reduced Weight: Lighter pistons can improve throttle response.

Forged Connecting Rods

Forged connecting rods are essential for transferring power from the pistons to the crankshaft. They need to be strong enough to handle the demands of high horsepower applications.

Choosing the Right Connecting Rods

When selecting forged connecting rods, consider the following:

  • Material: Look for rods made from high-quality steel or aluminum.
  • Length: Ensure they fit your engine setup.
  • Weight: Lighter rods can improve engine response.

Forged Crankshaft

The crankshaft is the heart of your engine. Upgrading to a forged crankshaft is crucial for achieving high horsepower levels without compromising reliability.

Features of Forged Crankshafts

Forged crankshafts typically offer:

  • Increased Strength: Handles higher loads without bending or breaking.
  • Improved Balance: Reduces vibrations for smoother operation.
  • Custom Options: Can be tailored for specific applications.

Upgraded Bearings

Using high-performance bearings is necessary when upgrading your internals. They help maintain oil clearance and reduce friction, which is crucial for a high-performance engine.

Types of Bearings

Consider these types of bearings for your forged internals:

  • Tri-Metal Bearings: Offer better durability and heat resistance.
  • Coated Bearings: Reduce friction and wear.
  • High-Performance Bearings: Designed specifically for racing applications.

ARP Fasteners

ARP fasteners are a must-have when upgrading your engine internals. They provide superior strength and reliability compared to factory bolts.

Benefits of Using ARP Fasteners

Some advantages of ARP fasteners include:

  • Higher Torque Capacity: Allows for better clamping force.
  • Durability: Resists stretching and fatigue during extreme conditions.
  • Precision Engineering: Ensures a perfect fit and finish.

Conclusion

Upgrading to forged internals is an essential step for 350Z owners seeking to build a reliable engine capable of 500+ horsepower. By investing in forged pistons, connecting rods, crankshafts, upgraded bearings, and ARP fasteners, you can ensure your VQ35DE engine not only performs at high levels but also stands the test of time.