fits model: Ej255, Wrx, Sti, Turbo. year: 2004–2018.

| Brand | SUBARU |
|---|---|
| Manufacturer Part Number | 11008AA930 |
| Type | BLOCK |
| Oe/oem Part Number | 04 05 2005 06 2006 07 2007 08 2008 09 2009 10 2010 11 2011, BAJA FORESTER IMPREZA LEGACY SAAB 9-2X WRX, FLAT 4 BOX BOXER, MAIN BEARING CAP |
| Material | ALUMINUM |
| Country/region Of Manufacture | JAPAN |
The Subaru 11008AA930 is a bare block for the 2004-2018 Subaru WRX STI's EJ255 and EJ257 turbocharged engines. This high-performance engine block is built to withstand the rigors of daily use and high-performance applications.
The Subaru 11008AA930 engine block is made from cast aluminum alloy, which provides excellent heat dissipation and resistance to corrosion. The block features a four-bolt main cap design, which provides increased strength and durability. The block also has a deep skirt design, which helps to reduce vibrations and improve engine stability.
The Subaru 11008AA930 engine block is designed to accommodate both the EJ255 and EJ257 turbocharged engines. The block has a bore size of 86.5mm (3.37 inches) and a stroke of 86.0mm (3.39 inches). The block has a four-valve per cylinder, SOHC (Single Overhead Camshaft) design, which provides excellent fuel efficiency and power delivery.
The block also features a cast-in water jacket, which helps to keep the engine cool during high-performance applications. The block has a 10.1:1 compression ratio, which provides excellent power output and fuel efficiency. The block also has a 6-bolt main bearing cap design, which provides increased strength and durability.
The Subaru 11008AA930 engine block is compatible with a variety of aftermarket parts, including turbochargers, camshafts, and cylinder heads. This makes it a popular choice for high-performance applications, such as racing and drifting.
In conclusion, the Subaru 11008AA930 is a high-quality, bare engine block for the 2004-2018 Subaru WRX STI's EJ255 and EJ257 turbocharged engines. It is made from cast aluminum alloy, has a four-bolt main cap design, and a deep skirt design. It also features a cast-in water jacket, a 10.1:1 compression ratio, and a 6-bolt main bearing cap design. This engine block is compatible with a variety of aftermarket parts and is a popular choice for high-performance applications.
Pros of buying a 2004-2018 Subaru WRX STI with a bare block (11008aa930) EJ255 or EJ257 turbo engine:1. Cost-effective: Buying a bare block engine allows you to save money compared to purchasing a fully assembled engine or a complete vehicle with a damaged engine.
2. Customization: A bare block engine provides you with the opportunity to customize the engine to your specific needs and preferences, such as upgrading the turbo, installing a new piston set, or improving the cooling system.
3. Quality: Subaru engines are known for their reliability and durability, making them a popular choice for performance enthusiasts.
4. Availability: Spare parts and aftermarket upgrades for the EJ255 and EJ257 engines are readily available, ensuring easy and cost-effective maintenance and upgrades.
Cons of buying a 2004-2018 Subaru WRX STI with a bare block (11008aa930) EJ255 or EJ257 turbo engine:1. Time-consuming: Building an engine from a bare block requires time, patience, and technical knowledge. If you lack these skills, you may need to hire a professional to complete the build for you, which can increase the overall cost.
2. Risk of damage: When building an engine from a bare block, there is a risk of damaging components, which can result in additional repair costs.
3. Limited warranty: Since you are buying a used engine block, it may not come with a warranty, leaving you responsible for any potential issues that may arise during or after the build.
Conclusion:Buying a 2004-2018 Subaru WRX STI with a bare block EJ255 or EJ257 turbo engine can be a cost-effective and customizable option for performance enthusiasts. However, it requires time, technical knowledge, and a willingness to accept the risks associated with building an engine from a bare block. If you are not comfortable with this undertaking, it may be more practical to purchase a fully assembled engine or a complete vehicle with a reliable engine.
Recommendation:If you are considering buying a 2004-2018 Subaru WRX STI with a bare block EJ255 or EJ257 turbo engine, it is recommended to do thorough research on the engine block and seek advice from experienced mechanics or engine builders. Additionally, make sure to budget for any potential repairs or upgrades that may be required during the build process. Consider your technical skills, time availability, and comfort level with the risks associated with building an engine from a bare block before making your purchase decision.
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