What is the best 1.8T Engine Setup?

Summary

In this video, the hosts discuss the complexities of building a 1.8 turbo engine, offering insights on how to tailor builds to different applications like street, track, drift, or drag racing. They break down various engine setups based on horsepower goals, from simple 300-350 wheel horsepower builds to high-performance 600-700 horsepower configurations. Emphasizing the importance of proper part selection, they caution against overbuilding and encourage building according to realistic power needs. The discussion also highlights key upgrades like connecting rods, exhaust valves, and valve springs, while underscoring the importance of suspension and tire enhancements for street performance.

Takeaways

• 😀 Building your 1.8 turbo engine should align with your intended application (street car, track car, drift car, etc.).
• 😀 Don’t overspend on unnecessary parts. Build according to the horsepower level you’re aiming for and the actual needs of your setup.
• 😀 A 300-350 WHP engine is achievable with basic upgrades, but be cautious about weak points like exhaust valves that may fail.
• 😀 The exhaust valves are a common weak point, even in builds around 300 horsepower, and should be replaced for reliability.
• 😀 Connecting rods and upgraded exhaust valves are essential for reliably reaching 400-450 WHP.
• 😀 For higher power levels (500-600 WHP), significant upgrades are required, including ARP bolts and other critical components.
• 😀 At 700 WHP, a 1.8L engine setup becomes impractical for street use due to turbo lag and drivability issues.
• 😀 Don’t just chase big horsepower numbers. A 400 WHP street car can be just as fun and more practical for daily use.
• 😀 Building an engine beyond your needs can result in overspending and a setup that doesn’t provide the driving experience you expect.
• 😀 Newer engines like the Gen 3 TSI offer better performance capabilities, but the importance of tailoring the build to your goals remains the same.

Q & A

What is the primary focus of the video discussion?

The video focuses on building 1.8L turbocharged engines, providing insights on different power levels and the necessary components for each build, depending on the intended use of the vehicle (street, track, drag, drift).

Why is it important to build a 1.8L turbo engine according to your specific goals?

It’s important because each type of car and performance goal (e.g., street, drag, track) requires different components and power levels. Overbuilding an engine can lead to unnecessary costs, while underbuilding can limit performance. A proper build ensures longevity, reliability, and enjoyment.

What power level is considered achievable with a stock 1.8L turbo engine?

A stock 1.8L turbo engine can reliably handle around 300 to 350 wheel horsepower, depending on the fuel and turbo setup. However, issues like exhaust valve failure may occur at this level.

What specific engine components are recommended for a build around 300-350 horsepower?

For a 300-350 horsepower setup, it’s important to focus on a proper turbo upgrade and fuel system. However, one key modification to consider is replacing the exhaust valves, as they tend to fail at this power level.

Why are exhaust valves an issue at 300-350 horsepower?

Exhaust valves can fail unexpectedly, even when the engine is running at 300-350 horsepower. This is a common failure point in 1.8L turbo engines, as they are generally of poor quality and prone to damage at higher power outputs.

What modifications are necessary to achieve 400-450 wheel horsepower reliably?

To achieve 400-450 wheel horsepower, it’s recommended to upgrade to stronger connecting rods and exhaust valves. Additionally, valve springs should be considered for increased RPM capability and long-term durability.

How does upgrading valve springs help with higher horsepower builds?

Upgrading valve springs provides more stability at higher RPMs, allowing the engine to rev higher and perform better under stress. This is especially important in builds pushing 400-450 wheel horsepower or more.

What is the 'slippery slope' mentioned in the video when building for 500-700 horsepower?

The 'slippery slope' refers to the fact that as you increase horsepower beyond 450 wheel horsepower, the number of necessary upgrades multiplies. At this level, you'll need more robust components, such as ARP bolts, stronger rods, and a larger turbo, along with numerous other considerations for engine durability and reliability.

What are the practical challenges of building a 700 horsepower 1.8L turbo engine for street use?

A 700 horsepower 1.8L turbo engine may struggle with drivability on the street due to turbo lag. Such high power builds typically require large turbos that aren't practical for daily driving, making the car less fun for regular street use and better suited for track applications.

How does building a 1.8L turbo engine with a stroker kit affect performance?

A stroker kit increases the displacement of the engine, resulting in more torque and horsepower potential. It provides a more balanced build, especially when aiming for higher horsepower targets. In the video, a 2L crank and stroker setup were used to maximize the engine’s potential.