The Ultimate Guide to the SC14 Supercharger
The SC14 supercharger has made a significant mark in the automotive performance world, particularly among enthusiasts looking to boost their engines’ output. Originating from Toyota’s high-performance Supra, this roots-type positive displacement supercharger offers both reliability and considerable power gain. In this guide, we will explore its specifications, pros and cons, installation details, and applications, providing a comprehensive resource for anyone considering an SC14 supercharger for their vehicle.
Comparison of Supercharger Types and Applications
| Supercharger Type | Description | Applications | Boost Potential | Maintenance Needs |
|---|---|---|---|---|
| SC14 | Roots-type positive displacement supercharger | Toyota Supra, Datsun 1200 | Up to 0.7 bar | Low |
| SC12 | Smaller roots-type supercharger | Toyota 4A-GZE engine | Moderate | Low |
| Turbos | Centrifugal compressor, reacts to exhaust flow | Various makes and models | High | Moderate to High |
| Twin-Screw | Positive displacement with more efficiency | High-performance cars | Very high | Moderate |
| Centrifugal | Uses a belt-driven impeller for boost | Sports cars, drag racing | High | Moderate |
Overview of the SC14 Supercharger
The SC14 supercharger was manufactured by Toyota in the late 1980s and primarily featured on the 1G-GZE engine found in the Toyota Supra. It provides a notable performance boost, making it a popular choice for aftermarket modifications. Its robust design allows it to maintain high performance levels, even under the demands of various engine configurations.
Specifications of the SC14 Supercharger
- Type: Roots-type positive displacement
- Dimensions: 31 cm long, 15 cm wide, 25.5 cm tall
- Weight: 12 kg
- Displacement: 1420 cc
- Boost Level: Typically runs at 0.7 bar boost
- Lubrication: Requires special supercharger oil (90 grade synthetic oil compatible)
- RPM Range: Designed to rotate at 1.25 times the crank speed
Advantages of the SC14 Supercharger
- Positive Displacement Design: Allows for consistent airflow matching, producing boost at low RPMs, eliminating turbo lag.
- Reliability: Known for long-term durability and simple operation, making it a favorite among enthusiasts.
- Easy Installation: Adaptable to various engine types, making it a versatile choice for modifications.
- Boost Control: Users can modify boost levels by changing pulley sizes or using boost controllers.
Disadvantages of the SC14 Supercharger
- Thermal Efficiency: Lower thermal efficiency compared to other supercharger types, necessitating an intercooler for high boost levels.
- Size and Weight: Large dimensions may pose installation challenges in compact engine bays.
- Parasitic Losses: The heavy internal components can lead to significant parasitic losses, impacting overall performance.
- Heat Generation: Generates more heat, which can affect performance unless properly managed with an intercooler.
Installation and Compatibility
The SC14 supercharger can be installed on a variety of engines, particularly those within the Toyota family and other compatible vehicles. Installation typically requires custom mounting brackets, pulleys, and potentially modifications to the intake and exhaust systems.
Installation Steps
- Preparation: Gather all necessary tools and parts, including custom brackets and pulleys.
- Mounting: Secure the supercharger in the designated engine bay location, ensuring it aligns with the crankshaft.
- Pulley Setup: Install the appropriate pulley size to achieve the desired boost levels.
- Oil System: Connect the lubrication system, using the recommended supercharger oil.
- Electrical Connections: Wire the supercharger to the vehicle’s control panel for on/off functionality.
- Testing: Conduct thorough testing to ensure proper function and boost levels.
Applications of the SC14 Supercharger
The SC14 supercharger is primarily used in the following applications:
- Toyota Supra: Factory-installed on the 1G-GZE engine, enhancing its sporty performance.
- Datsun 1200: Widely regarded as the go-to supercharger for modifying these classic vehicles, providing a significant power boost.
- Custom Builds: Compatible with various other engine builds, particularly in the aftermarket tuning community.
Technical Features Comparison
| Feature | SC14 | SC12 |
|---|---|---|
| Type | Roots-type | Roots-type |
| Displacement | 1420 cc | Lower than SC14 |
| Boost Potential | Up to 0.7 bar | Moderate |
| Weight | 12 kg | Lighter than SC14 |
| Lubrication | Special supercharger oil | Similar requirements |
| Applications | Supra, Datsun 1200 | Toyota 4A-GZE |
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Conclusion
The SC14 supercharger stands out as a reliable and powerful option for enhancing engine performance. With its roots-type positive displacement design, it allows for excellent boost production, particularly at low RPMs. While it comes with some challenges, such as heat management and size constraints, its advantages often outweigh these drawbacks for enthusiasts and tuners. Whether installed on a Toyota Supra or a custom project, the SC14 remains a popular choice in the performance tuning landscape.
FAQ
What is the SC14 supercharger?
The SC14 supercharger is a roots-type positive displacement supercharger manufactured by Toyota, primarily featured on the 1G-GZE engine in the Toyota Supra. It is known for its reliability and ability to produce boost at low RPMs.
What vehicles can use the SC14 supercharger?
The SC14 is commonly used in the Toyota Supra and is also popular among enthusiasts modifying Datsun 1200s and other compatible engine platforms.
How much boost can the SC14 produce?
Typically, the SC14 operates at a boost level of up to 0.7 bar, but this can be increased by changing pulley sizes.
What oil should be used with the SC14 supercharger?
The SC14 requires a special supercharger oil, which is typically a 90 grade synthetic oil, although standard oils can be used with caution.
What are the advantages of using the SC14 supercharger?
Advantages include its ability to produce boost at low RPMs, reliability, easy installation on various engines, and the potential for boost control through pulley modifications.
What are the disadvantages of the SC14 supercharger?
Disadvantages include lower thermal efficiency compared to other supercharger types, size limitations in engine bays, and parasitic losses due to its heavy internal components.
How is the SC14 supercharger installed?
Installation involves securing the supercharger in the engine bay, aligning it with the crankshaft, connecting the oil system, and wiring it to the vehicle’s control panel.
Is the SC14 supercharger suitable for street use?
Yes, the SC14 is suitable for both street and track use, provided that proper heat management measures are implemented.
What performance gains can be expected from the SC14?
Performance gains vary based on the engine and setup but can significantly enhance horsepower and torque, especially when paired with proper tuning.
Where can I find more information about the SC14 supercharger?
You can find more information on various automotive forums and websites, including hydemotorworks.com, superchargedsilvia.50megs.com, and datsun1200.com.