fits model: Ej25, Sti, Turbo. make: Subaru.

( Brand: Manley ), ( Manufacturer Part Number: 190040B ), ( Part Type: Crankshaft )
The 190040b 79mm crankshaft from Manley Motorsports is a high-performance upgrade for Subaru EJ25 engines, specifically designed for those with a desire for increased power and reliability. This billet crankshaft is made from 4340 chromoly steel, a material known for its strength and durability, ensuring it can withstand the rigors of high-horsepower applications.
The 79mm stroke of this crankshaft provides an increase in displacement over the standard EJ25 engine, resulting in more power. The crankshaft features a polished finish, which not only looks great but also aids in reducing friction, contributing to smoother operation and improved efficiency.
The 190040b crankshaft is designed with a 261/64" journal diameter, a 79mm stroke, and a 6.000" crankshaft centerline. It is also equipped with Manley's proprietary roller bearings, providing a quieter operation and longer bearing life compared to standard bearings.
This Manley crankshaft is a direct-fit replacement for the stock EJ25 crankshaft, making installation straightforward. However, it's essential to note that installing this crankshaft requires a balanced rotating assembly, as well as appropriate engine building skills and a suitable engine dyno for proper break-in.
In summary, the 190040b 79mm crankshaft from Manley Motorsports is an excellent choice for Subaru EJ25 engine builders looking to increase power and reliability. Its high-quality materials, superior design, and improved performance make it a valuable addition to any high-horsepower Subaru build.
Pros of buying a 190040B 79mm crankshaft for a Subaru EJ25 engine with a Tuff Turbo:1. High-quality material: The crankshaft is made of billet material, which is known for its strength and durability.
2. Increased horsepower and torque: The 79mm stroke of the crankshaft allows for increased displacement, leading to more power and torque.
3. Tough Turbo compatibility: This crankshaft is specifically designed for use with Tuff Turbo, ensuring a smooth and efficient operation.
4. Manley Racing reputation: Manley Racing is a well-known and respected manufacturer of high-performance engine parts, which adds to the confidence in the product's quality and performance.
Cons of buying a 190040B 79mm crankshaft for a Subaru EJ25 engine with a Tuff Turbo:1. Cost: Billet crankshafts are more expensive than standard crankshafts, which may be a prohibitive factor for some buyers.
2. Requires additional modifications: Installing a larger stroke crankshaft may require additional modifications to the engine, such as upgrading the pistons and connecting rods.
3. Risk of engine damage: If not properly installed or maintained, a larger stroke crankshaft may lead to engine damage.
Conclusion:The 190040B 79mm crankshaft is a high-quality and durable option for Subaru EJ25 engines with a Tuff Turbo, offering increased horsepower and torque. However, the cost and potential for additional modifications and engine damage should be considered before making a purchase. For those looking to maximize the performance of their engine, the benefits may outweigh the drawbacks, but it is important to ensure that the installation is done properly by a qualified mechanic.
Recommendation:If you are looking to significantly increase the horsepower and torque of your Subaru EJ25 engine with a Tuff Turbo, the 190040B 79mm crankshaft is a worthwhile investment. However, it is recommended to have the installation done by a qualified mechanic to ensure proper fit and function, and to regularly maintain the engine to prevent potential issues.
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Search by make model year or part number Manley Turbo tuff billet crankshaft Subaru Sti EJ25 79mm stroke 190040B 4340 billet multi step heat treatment process stress relieved and shot preened nitrated 100 knife edged counterweights gun drilled gun drilled crank pin and counterweights weighs only 19.
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